Why the stove can warm the interior badly and how to fix it - wheels.ru - automotive magazine

In a car with a classic internal combustion engine, the heater works very simply: the "stove" radiator, located in the cabin, is included in the circuit of the engine of the engine cooling (we, of course, do not take into account "Investers", from which this system is missing).

The heater radiator in most cases is part of the cooling system

In the case when the circuit provides a crane and liquid through the heater radiator is not permanently (as on the zhigules and Samara), in the warm time of the year, the water pump shakes the antifreeze "past the stove", that is, only through a water shirt of the cylinder block and the main radiator. If the cooling fluid always circulates through the heater, then in the warm time of the year, with the help of a special damper, the air flow from the "stove" is overlapped in favor of the outer. To carry out heat exchange between the heater radiator with hot antifreeze and salon air, an electromotor with an impeller is provided - simply speaking, a fan that drives hot air from the heater radiator into the interior of the ventilation and heating system deflectors. At the same time, the temperature can be adjusted by mixing the wicked air with hot. Threads can also be distributed (up on the glass, right in the face or down to the legs) with lever or buttons controlling flaps.

Even in the Soviet "eight" sample of 1984, it was possible not only to change the temperature of the air supplied to the interior, but also to regulate its intensity, as well as the distribution of flows, including the supply of heat into the feet of the rear passengers!

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Even in the Soviet "eight" sample of 1984, it was possible not only to change the temperature of the air supplied to the interior, but also to regulate its intensity, as well as the distribution of flows, including the supply of heat into the feet of the rear passengers!

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Even in the Soviet "eight" sample of 1984, it was possible not only to change the temperature of the air supplied to the interior, but also to regulate its intensity, as well as the distribution of flows, including the supply of heat into the feet of the rear passengers!

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How to achieve maximum heater efficiency?

Due to the fact that the intensity of the heating of the cabin depends on the position of control levers, some drivers use the "stove" incorrectly, which, for example, sweat the glass or the interior is not heated. If everything is clear with the temperature (the larger the damper or the crane is open, the warmer), then the distribution of the flows and the speed of rotation of the fan depend on the conditions and temperature of the engine itself. This means that immediately after starting the engine, it makes no sense to turn on the "stove" fan until the engine warms at least up to 40-50 degrees - blowing the cold radiator will not give anything.

Until the motor warms up to operating temperature, waiting for hot air from deflectors is not worth

It is not worth it and turn on the increased (more first) speed before the engine warms up to the operating temperature (or at least 70 degrees), as it will only give the influx of cold air into the salon, and the motor will warm up longer.

Approximately such a "twist" of the heater should be exhibited when the cold engine is started

In the presence of a recirculation system, which is not found perhaps on the "fossil" cars from the last century, for quick warm up you can first warm the cabin, and not wounded air, breaking the damper of air intake from the street. However, it should be borne in mind that when the open recirculation is enabled.

Why doesn't the engine be heated?

Since the temperature of the air supplied to the interior directly depends on how much antifreeze was heated, any cooling system malfunctions affect the efficiency of the heater.

Modern motors with a small working volume and high efficiency, to which most of the upgrade diesel engines and "Turbobenzine" belong are "cold", that is, without load (in place), they warm up very long and reluctantly.

If the driver had previously traveled on the "elder" car, where the heater served warm air into the salon after a few minutes after the launch, such a feature of modern low-intensive motors can be even mistaken for a malfunction.

However, in addition to imaginary problems, real troubles exist. For example, the thermostat that opens when heating the antifreeze, passing it into the main cooling radiator, can jam in the open position, and the cooling fluid immediately after starting will circulate not by the so-called small circle (bypassing the main radiator), and in a large, constantly cooling and cooling and Giving heat to the radiator, which is blown by the oncoming flow of ice air.

The temperature mode of the motor depends on the thermostat's condition. And, accordingly, the amount of heat supplied to the salon.

It does not benefit not only the comfort of passengers, but also a motor that will operate at low temperatures without leaving the working (87-100 degrees)!

At the end of the nineties, instead of conventional mechanical thermostats in cars, it began to introduce electronically controlled, where the block controls the thermostat spiral depending on the motor temperature, but also from loads. Electronic control allows you to more accurately and finely configure the operation of this important assembly of the cooling system, as well as change the parameters of its operation by changing the firmware.

True, the use of electronics here is not just like that - modern motors are much "hot" than the engines of the previous generations: their operating temperature is 108-111 degrees, and not 87-95, as it was before. Bright example - BMW M62, N46 and N62 engines, which in some conditions work almost on the verge of overheating. The refusal of such a thermostat does not always lead to the triggering of the check engine, therefore the risk of "boating" the motor in the summer traffic jam is even more likely than in the zhiguli with a thermostat that jammed "on a small circle".

Why is the engine hot, and "stove" blows with cold air?

It also happens that the engine has long warmed up to 80-90 degrees, and the deflectors are slightly warm air, although all the regulators of the ventilation system and heating are exhibited correctly. The reason may wage in other technical problems: air traffic jams in the cooling system, dirty outside or scored from the inside the radiator of the heater or the evaporator of the air conditioner, the "Pames" from dust air filter ...

Honest radiator or faucet "stove" do not contribute to heat in the car

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Honest radiator or faucet "stove" do not contribute to heat in the car

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Honest radiator or faucet "stove" do not contribute to heat in the car

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On some cars to replace the radiator, you need to completely dismantle the instrument panel
The scored "Salonnik" is another probable cause of a poorly working "stove"

Quite often occurs and the non-working heater valve is also found - for example, due to the flying cable, the crucible crane or the refused servo. In general, considering that the principle of operation of the heating system has not changed much over the years and is still a blown radiator, the malfunction logic is also simple: the problem is either in the heating of antifreeze, or in its passage through the heater radiator.

And the heater crane flap, and the drive control of deflectors should be easily open and without jail

Why doesn't "stove" not turn on at all?

Sometimes the heating system is fully proper, but hot air into the cabin is not served on a banal reason - the "stove" fan motor does not turn on. Accordingly, the impeller does not rotate and does not supply heat through the air ducts.

In addition to the refused electric motor, other reasons are possible - for example, a burnt speed switch resistor, a blown fuse, faulty wiring and so on. In any case, if when switching the fan speeds from the panel is not a characteristic noise, indicating the operation of the electric motor, the problem is in it.

In my car, the "stove" warms immediately after starting the motor - how can it be?

Many modern cars, especially diesel, in addition in the liquid salon heater are equipped with an electrical heater. It is designed to solve the issue of the salon heating until the engine warming up: while the engine is cold, and the antifreeze does not reach the operating temperature, the electrical heating element works - approximately such as in the home electrical heaters. It is heated almost instantly immediately after starting and replaces the heater radiator until the antifreeze warms up to the desired temperature. After that, the "stove" goes to a standard mode of operation.

Hello everyone as you have noticed the winter. And I really do not want to ride in a car with a cold cabin. Normal working car must warm the interior in 10-15 minutes. What to do if the car stove is bad or completely blows with cold air, consider the reasons for this article.

10 reasons why does not heat the stove and blows with cold airThe winter is approaching, cold in the cabin. Someone will say no trouble, I go to Balahon, how to defeat the frost, so that neurosis began, you scored on the Internet, this warming request.

Let's in order the first reason why Does not heas the stove This is a fan, it is one of the most banal causes. If the fan does not work, it means that the warm air will not be blown in the salon. Of course, the stove radiator will be heated, but this is not enough to warm up the interior. In this case, you need to check the fan fuse, and if you need to replace if the fuse is in order, then you need to replace the fan.

1. Fan stove

Cause of bad work stove fan

2. Coolant level

The second reason is the level of coolant, if necessary, add liquid.

Does not warm the stove little coolant need to add

3. Recent system

The third reason is to enjoy the cooling system, you need to eliminate, and also find where the air is supplied to.

Restaging the cooling system

4. Radiator stove

Fourth Cause This is a stove radiator, it may be scored. The reasons may be a few first is the incorrect mixing of liquids. The second reason is what poured water. Water causes not only corrosion, but also forms a scale on the walls. And the third is when you eliminate the flow of the radiator with the help of sealants. In this case, you need to either wash the cooling system, or change completely radiator.

The radiator flows

5. Faulty thermostat

The fifth cause of bad work stove is a faulty thermostat. If you have a fan with the ovens with the stove itself, it does not heat the stove at all, then it is possible in the thermostat. Since with a faulty thermostat, the liquid circulates in a large circle. It is solved only by replacing the thermostat or thermoelement.

Car thermostat

6. Faulty pump

Sixth reason is a faulty engine pump. Pomp This is essentially such a motor pump, which pumps the fluid on the cooling system, as well as for heating the cabin. The solution one needs to change the pump.

7. Laying GBC.

The seventh reason it breaks through the cylinder head gasket. If this laying is broken, then the coolant will be held in cylinders or in the silencer. From the muffler will throw white smoke. In this case, you need to urgently change the gasket of the GBC, and otherwise you can destroy the car engine.

GLP gasket

8. Lid expansion tank

The eighth reason is the lid of the expansion tank if necessary, it is necessary to replace the new one.

Lid expansion tank

9. Work of air regulators

The ninth reason you need to see how air regulators work, may not be opened to the end. Or even flew the cable. You also need to see how the flap position switching works.

Car air regulators

10. Dirty cabin filter

And the tenth cause of bad work stove is a dirty cabin filter. Because of the dirty filter, the stream decreases. You also need to replace the new one.

Cabin filter car

Well, that's all we have considered the main causes and malfunctions of the stove work. I also want to add that in many cases the thermostat becomes a bad work of the heater, so pay attention to it.

10 reasons why not warming the stove of the car (video)


The reasons why heats the stove badly. Let's start with the most common.

1. Low coolant or air traffic

Why bad heat stove in the car: low cooling fluid level or air traffic

Due to the leaks in the connecting places of the nozzles or on the radiator, the coolant level in the system may decrease. This will worsen its circulation inside the heater radiator and will affect it. The same effect is provided by air traffic jams that are formed when replacing or plotting antifreeze.

What to do

Check the level of coolant and, if necessary, become a fraction. If there are leaks, eliminate them.

To get rid of traffic jams, open the lid of the expansion tank and the radiator (if any), and then squeeze all thick hoses several times, which can be reached.

Run the engine, turn on the stove to the maximum and allow the car to work at idle until it warm up. For loyalty, it would be good to call on the flight or some hill to raise the front of the car and help the air go out. In this case, a small amount of antifreeze can spill - be careful.

2. Filter blocking cabin and air duct

Why does the stove in the car heats badly: blocking the filter of the cabin and air duct

Sometimes the cause of a poorly operating heater can be a dirty cabin filter or the leaves, insects and dust in the air duct. The radiator itself is heated in this case, but cannot give heat due to the weak air flow.

What to do

Check out the cabin filter and replace it if necessary. If there is no filter at all, although it should be, then clean the duct from the garbage. If possible, get to the radiator of the heater and well blow it with compressed air.

3. Malfunction of thermostat

Why bad heat stove in the car: thermostat malfunction

This is a frequent cause of problems with the stove. If the thermostat is clinically closed, then the breakdown is noticed immediately, because in this case the engine overheats. But if we are talking about an open or ajar position, then, as a rule, drivers will learn about it only with the onset of cold weather.

If the thermostat is constantly open, the coolant is always moving in a large circle. As a result, the engine warms up for a very long time, and sometimes it does not heat up completely. Of course, there can be no speech about any normal operation of the heater. This increases fuel consumption, and in the case of an automatic transmission also slows down its warm-up time.

Signs of a faulty thermostat are more or less to heat the stove when driving at low speed and cold air from ventilation when moving along the highway. That the thermostat is constantly open, also indicates the simultaneous heating of both radiator hoses. Normally, when starting the engine, one of them should be warm, and the second is cold.

What to do

Option is only one: replace the thermostat to the new one.

4. Heater radiator zoom

Why is a bad stove in the car: zero radiator heater

Another common reason. Usually, blockages happen due to poor-quality coolant, mixing different liquids, talling water or the use of sealants for the cooling system. Deposits and scale, formed inside the radiator, are completely clogged with cells and block the circulation of antifreeze.

What to do

It is quite difficult to remove and change the radiator on any machine, so first try rinse it. You will need a special tool or ordinary citric acid (100 grams need to dissolve in 5 liters of distilled water). With the radiator, regular hoses are removed, others are connected to the input and output. The liquid is heated to 80-90 ° C and fed into the radiator using some pump.

Unfortunately, flushing is not a panacea. It helps about half of the cases. In addition, due to the flushing of internal sediments, flowing can be formed.

If the flushing did not give results, only the radiator replacement will help. In this case, it will also be worthwhile to flush the entire cooling system and replace the liquid.

5. Wear an impeller pump

Why bad stove in the car: wear impeller

Pomp is a pump that pumps antifreeze from the engine, providing its continuous circulation through all the cooling system nodes. Pump breakdown is quite difficult not to notice: in this case, the engine will immediately overheat and boils.

When wearing the impeller blades due to aggressive exposure to water or poor-quality antifreeze, pump performance drops significantly. It is still enough for the cooling fluid to circulate and the engine does not overheat, but is not enough to fully warm the heater radiator.

What to do

As a rule, pumps are not repaired. Therefore, the problem is solved by replacing a faulty unit to a new one.

6. Fan problems

Why bad warm stove in the car: malfunction with fan

The cold in the cabin can be caused not only by insufficient heating of the heater radiator, but also its weak blowing. This is already to blame the fan, which does not provide the necessary air flow and heat removal from the radiator.

What to do

If the fan does not work at all, then everything is clear. More often, it rotates, but with insufficient speed. This is due to the wear of the electric motor brushes or subdining bearings. In both cases, it will be necessary to repair from the auto electrician.

7. Crash damage damper

Why bad heat stove in the car: vehicle barrel breakdown

Another reason why the stove warms, but the heat in the cabin does not reach, is malfunctions in the work of the damper. In all modern cars, the heater radiator is heated constantly, and heat from it only when the duct damper is open. If the valve does not open or open completely, there can be no speech about the optimal temperature.

The flap is driven by a servo, which is controlled by a handle or buttons on the climate control panel. The problem can be both in the breakdown of the servo itself, and in the slipping of the cables or the dampers leading in motion.

What to do

You can reveal and correct this problem only when disassembling the heater panel. If you jumped up thrust or cables, they need to be returned to the place. A servo malfunction, unless he denied completely, can only be diagnosed by a specialist. Repair servos are rarely subject to repair, mostly the problem is solved by replacing the new one.

8. Warming up the heater control unit

Why bad heat stove in the car: breakdown of the heater control unit

In addition, the air damper may not be opened due to faults in the climate control unit or temperature sensors. In this case, the desired signal is simply not served on the drive, one in turn does not open the flap, and in the cabin instead of hot, it goes cold air.

What to do

Only a specialist after disassembling and diagnostics can determine the exact cause of the breakage. Therefore, without a trip to a good car service, it is unlikely to do.

9. Exactness of the heater hull and radiator displacement

Why bad heat stove in the car: leakage of the heater housing and radiator shift

A rather rare problem is a violation of the tightness of the case. After an accident or incorrect assembly, plastic stove details may be damaged or have gaps, through which hot air will leave. In this case, the efficiency of the heater will decrease significantly.

In some cars, due to weak latches or other disadvantages of the design, the radiator can shift from its place, and the air injected by the fan will take place without through it, but by. The same thing happens when the damper of the air duct is closed, that is, nothing to talk about how warmth.

What to do

In both cases, you need to disassemble the torpedo to get to the heater and restore it to normal. That is, fix damage, compact the joints of the body parts, return the heater radiator and fasten it well.

With this you can cope and independently, but the work is not from the lungs. Therefore, if you are not confident in your abilities, refer to the specialists.

10. Trucking gasket GBC

The most unpleasant problem, which, fortunately, is quite rare. Due to engine overheating and poor tightening of the cylinder head at some point, the gasket may be damaged. If the breakdown happens between the cooling shirt and the combustion chamber, then the gases from it will fall into antifreeze, forming bubbles and worsening circulation, and in some cases even creating air traffic jams.

You can recognize the laying breakdown by thick white smoke, or rather, a pair of silencer, which is formed from getting a coolant into the cylinder. In the expansion tank, it will be buried in the expansion tank, and because of the increased pressure, it is possible to throw out and even splashing antifreeze outwards.

What to do

Do not joke with it. With the slightest suspicion on the breakdown of the GBC laying, it is better to immediately contact motorists. If you cannot eliminate the problem in a timely manner, it can turn into more serious problems and expensive engine repair.

Maybe someone ever come in handy :)

Heat stove badly

With the arrival of cold weather, the stove becomes often demanded in the car. Warm cozy salon, in which you can protect against autumn and winter bad weather - the dream of any driver and passenger. But, sometimes the stove in the car warms poorly so much that it does not go and speech. If the car also stood without a movement for some time, then what to do then with a very frostable windows is a serious question. Because of what time is the problems with the heating of the car and the stove warms well? In order to better figure it out, it is necessary to get acquainted with the entire heating system.

In order for the stove to work in full mode and without failures, it is necessary for the good condition of all its spare parts. It is arranged quite simply and consists of directly radiator, a special device for regulating the movement of fluid, nozzles by which cooling liquid circulates, air dampers and air duct. Also in the car heating system enters the fan. The stove will work if there are no failures in each individual part of it. The main reasons for the failure of the stove

The heating system will not work in normal mode if the air has hit it at the time of replacing the coolant. ▫ Air can enter the heating system if there are damage to the main block of cylinders. ▫ can jam the thermostat in the open position. If with a fairly fast movement, your stove does not cope with heating, and at low speeds heats well, then, most likely, the problem is precisely in this. ▫ Also, the heating system - cooling can not work 100% if the stove radiator is clogged. This can happen for several reasons. Insects, leaves and dust fall into the radiator. Or in the radiator could get a sealant. There will be a problem if water or poor-quality toosol got into the radiator. ▫ to the failures in heating can also lead the cabin filter in the event of severe pollution. It is a fairly frequent failure of the fan itself. Bearings or brushes can fail, and this will lead to the unstable work of the entire system. There may be problems directly related to electronics.

These are the most common problems. Sometimes, the heating system fails due to damage to the radiator damper. Air may not fall into the system or fall into insufficient number.

A little different is the case, if we are talking about domestic cars. We highlight a few reasons why the VAZ stove is bad, the heating system may not work in these cars.

▫ Heater crane lever worked. Could dry elastic bands or the lever itself zaks. In this case, it should be replaced with a new one with the radiator of the stove itself.▫ the upper nozzle broke. Because of his location in the car, this pipe is very easy to hurt. It breaks and is absolutely not suitable for repair. It should also be replaced with a new one, after which the work of the stove should normalize. ▫ Could fail the stove control unit, it is the heater controller. It will become noticeable if the fan will work badly in position 1 and 2. To failures in the operation of the heating system, a faulty air temperature sensor in the car can lead.

In order for the stove always in working condition and did not fail at the right time, it is necessary to follow several ordinary tips:

▫ It is necessary to regularly clean radiators from a variety of clogging. The outer radiator can be cleaned with streams of compressed air, and if necessary, it can be removed and washed under the jets of water. The inner radiator will be cleaned with a vacuum cleaner if the level of pollution is not very large. When using it is not original or simply not quite high-quality toosol not to avoid the growths inside the channels of the nozzles. You can easily clean the radiator without removing it. It is necessary to simply swap the top and bottom nozzles and give the car a little work. Also produce cleaning with household citric acid or use a special washing fluid. So that such a problem does not occur at all, it is recommended to change the antifreeze at least two times a year. ▫ urgent replacement is subject to a defective thermostat. If he jammed in an open state, the stove will not fully warm the salon, and the car itself will warm longer. If the thermostat is jammed in an open state, then it can lead to overheating of the entire car, which will entail a large repairs. An article from the community itself is an auto mechanic. It is not recommended to use a car without a cabin filter, since all the dust and microbes from the street will fall directly into the salon. Therefore, the filter should be replaced with a new one. The heating system will work badly if air bubbles formed in it. This is not a terrible problem, you can solve it. To begin with, you should try to drive out the air with a plugged engine. Open the plug of the expansion barrel, find the hose from the barrel to the radiator and try to overflow the antifreeze manually. If this method is not suitable, then you need to give a car to work at idle. ▫ You also need to pay attention to the levers of damper controls of the stove itself. If the rope or the driver's crane jumped, it may be the cause of bad operation of the entire system. ▫ Periodically, it should be lubricated with bearings on the stove fan, as well as clean it from dust.

If at the air temperature on -25 degrees, the stove of your car warms the interior to +16 degrees from below and +10 degrees from above, the stove can be considered quite good. The temperature on the rear seats of the car at the same time should be approximately +15 degrees. The presence of such a noticeable difference between the temperature at the bottom of the cabin and the temperature above will provide a comfortable trip, both the driver and the passenger.

In order to avoid such problems, it is recommended on time and carefully carry out all preventive measures. This will allow you to enjoy the calm movement in a good warming car. You protect the glass from the alleged layer, thanks to which the movement will become more secure. The more the service life of the car, the more attention requires its heating system. This applies to all cars, regardless of the country - the manufacturer.

All the reasons why the stove does not warm in the car are divided into two main groups: failures in the operation of the heating system, and problems of the cooling system. To understand the situation, we will tell about the main causes of failures, the old antifreeze is to blame or the thermostat does not work.

Why the stove does not work

The stove in the car is pretty simple: in the radiator installed under the dashboard, the coolant (antifreeze or antifreeze), allotted from the operating engine enters the nozzles. The control system of the liquid includes an air duct, air damper with drives, a thermostat that regulates the coolant supply. The fan blows the radiator and supplies the heated air flow inside the car, blowing the cabin of the car.

The stove is bad in the authors

Thus, the failure of one of the components of the system will affect the functioning of the entire mechanism. For example, the thermostat, the thermostat and the engine will not be able to exit the operating temperature (85-90 degrees), so in the machine it will be cold when working the stove at full power.

How to understand that the stove works wrong

If in a 25-degree frost, the car is heated to 16 degrees in the legs, and up to 10 degrees under the ceiling, then the heating system works properly. The car is required on average 15-20 minutes so that the liquid warms up to the required temperature and began to heat the car salon.

The stove is bad in the authors

Heat from the stove (if it is not only autonomous Webasto) does not immediately heatese the interior after the engine is started. The liquid also froze and she needs time to warm up. For example, the optimal warming time in winter is about 5-10 minutes. Motor warms antifreeze from minus to about 60 degrees. After the helm of the heating system will go warm. Therefore, the experienced drivers do not immediately include the stove, but a few minutes later.

But it happens that after 20 minutes the stove in the cabin does not heat and go cold air. What's wrong?

Causes of non-working stove

Several reasons allocate, due to which the normal operation of the heating device is not possible.

  • Air in the heating system. Air hit at the time of replacement of the liquid, or into the heating system when the Cylinder head is deployed (cylinder heads). First of all, check the level of antifreeze in an expansion tank under the hood. It should be between MIN and MAX marks. If there is little antifreeze, then peel to the level. Just do not leave water!
  • Measures with a temperature controller (thermostat), jamming in a closed, open position. If during the long-term movement at high speeds the stove warms weakly, and on low well, then the thermostat stroked in the open position. When the regulator is clinically in a closed position, the engine is overheated while driving, although the stove works properly. Check easy. You need to look at the temperature of the heated engine. It should be about 90 degrees. If it does not heat up to this temperature, it means the poverty hangs.
  • Filter from the cabin side is contaminated. It is recommended to replace once a year. It happens that all the details of the car's heating system are working, and the stove blows weakly even at high speeds. Change the salon filter, it probably thrust mud and the air through it passes weakly.
  • Crane breakdown. Most often, the stoves in the cars of the domestic producer (gas, VAZ, UAZ) are susceptible to the breakdown. The reason may be the drying of the gum, the crying of the lever. In this case, the replacement of the crane or the entire radiator is required.
  • "Floored" the stove control unit. A breakdown is characterized by incorrect operation of the fan in certain modes. Typically, the reason is the resulting temperature sensor in the cabin of the car.

What to do if the stove does not warm

Before proceeding to troubleshoot, carefully observe how the stove is functioning, as the cooling system breakdowns are manifested. Below is a table with possible reasons and methods of their liquidation.

Possible causes of breakage as a malfunction is manifested. What to do?

  1. The engine cooling system and the interior heating system is imported. Slow warming salon.

The stove serves that hot, then cold air, or only cold.

Give work to work.

Check the tightness of the head of the cylinder block.

2. The level of antifreeze fell.

The fan blows with cold air. Add antifreeze to the tank. If the problem does not leave, check nozzles and hoses for the presence of leaks.

3. Calibling the thermostat in the open position.

The salon heats up slowly (in the car cold)

Blowing cold air from the stove.

It comes from the stove that cold, then hot air.

Requires urgent replacement of the thermostat.

4. Output of the radiator goes cold air on a heated car (the stove warms poorly).

Clear the surface of the radiator.

Get rid of science and deposits within the cooling system.

If the problem remains - replace the radiator.

5. Equality of the heating crane or levers of dampers.

Cold air from the stove. Check, whether the cable on the place is on the lever of dampers or heating crane

6. Salon filter is a weak hot air flow (stove badly).

The engine is hurt during operation.

Glasses in the cabin sweat.

Replace filter

7.The farther fascinating hot air .

The stove faintly serves hot air. To identify causes of breakdown and eliminate them to the service center.

8. The fan does not start.

The stove in the car does not turn on. If turned on, but hot air is firmly fed. Replace fuse. Install the electronic fan control system.

To identify causes of breakdown and eliminate them to the service center.

9. Do not work the stove control unit.

The stove warms poorly, blowing cold air, or does not turn on.

It comes from the stove, then the cold air flow.

To identify causes of breakdown and eliminate them to the service center.

10. The separator septum septum.

Hoses leading to the radiator hot. Antifreeze does not arrive in the cells of the radiator. The only way out is to replace the radiator.

11.The designer of the engine pump.

The stove works, but does not warm. Whistling sound under the hood. Hot hose at the entrance to the pump, cold at the exit. The crankshaft belt broke. Enclosing the "impeller", the pump itself.

Erasing the inner surface of the impeller with aggressive substances, which is why it scrolls with a rotating pulley.

Replacement of spare parts.


So that the stove worked properly, it is confident that the system will not lead to the best time, it is necessary to comply with some conditions.

  • Take care of the purity of the radiator. Outside, the radiator is cleaned with a compressed air flow. The inner surface of the heater is washed with special means of cleaning the engine cooling system.
  • The use of high-quality antifreeze. The timely replacement of the antifreeze of good quality will extend the work not only the heating system, but also the engine. Do not use water to cool the radiator, correctly mix antifreeze of different brands to avoid the appearance of the sediment. Failure to comply with these rules leads to rusting of the metal, the appearance of scale on the walls.

Replacing the filter. Periodic replacement of the cabin filter will save from problems in the work of the stove, the entire system of air conditioning and ventilation in the cabin. In many cars, it is possible to change it with your own hands for 10-40 minutes.

If the stove in the car works badly or warms weakly, it is possible to correct the situation with your own hands. Change the filter, add antifreeze. Or contact the service if the thermostat is faulty (this is only 10 percent of the likelihood from other faults). The main thing is to understand why heating in the car does not work as before.

Do not work the stove in the car - what to do?

Bad warm stove in the car

With the arrival of cold, some drivers are puzzled by the cause of the reasons why the stove is bad in the car. Moreover, sometimes the stove in the car begins to work as bad that it becomes absolutely not able to shive the interior. In addition, in a strong frost, the situation is aggravated by the frost of stalk. What to do in such cases?

In fact, there is not so many reasons why the stove in the car can work inefficiently, and below we will look at each of them.

At the end of this article, see the video with a detailed description of the reasons for which the stoves in the machines are poorly working, and how to eliminate them.

In the meantime, you will find out the reasons why the stove warms well, we recommend paying attention to alternative methods of heating in the car's cabin:

Of course, these "heels" will not replace the staffing stove in the car, but will undoubtedly add comfort even after its repair.

7 reasons why the stove warm is warm in the car

Why bad heats stove in the car (reasons)

In order to better figure out the reasons why the stove is bad in the car and understand why it does not work as it should, you need to get acquainted with the device with the device of the car heating system.

The stove in the car will warm well and without failures if all its nodes and composite parts are working. The salon heater is simple enough, and in most cars it consists of the following parts:

  • Heater control unit;
  • Radiator stove (heat exchanger);
  • Pipes (underwater and tap);
  • Crane adjustment of the coolant feed (antifreeze);
  • Air dampers with drives;
  • Fan;
  • Air ducts.

Below we list seven main reasons why the stove in the car can warm badly or not work at all:

1. Air in the heating system The stove in the machine will not work in normal mode in case of air from entering the replacement of antifreeze in the engine cooling system. Air can also get into the heating system with a violation of the tightness of the head of the cylinder block.

2. Faulty thermostat The car thermostat can be swam both in the open and closed position. If with a long-term ride on the fourth-fifth gears, the stove in the car warms badly, and on small (1-3 transmission) - good, then the problem is most likely that the thermostat is jammed in the open position. If the thermostat is crossed in a closed position, then problems with the work of the stove will not arise, but the engine will overheat, which can even lead to the failure of it.

3. scored the stove radiator The stove radiator in the car can be scored for various reasons, and, both outside and from the inside. Outside, the radiator is clogged as a result of dust, insects, the leaves are all the fact that it falls through the protective casing. From the inside, the stove radiator over time is clogged with mud and sediments present in the engine cooling system. Also the reason for the "overgrow" channels of the radiator nozzles can be poor-quality antifreeze.

4. Located cabin filter The stove in the car can also warm well because of the strong pollution of the cabin filter. Do not forget to change the salon filter at least once a year.

5. Farming fan The fan that blows the air into the salon can work badly as a result of the failure of bearings or graphite brushes - this will lead to the unstable work of the entire ventilation system and the interior heating. Also, the fan may not be included due to problems in the power circuit.

6. Heater crane malfunctions Most often, such malfunctions are found in domestic car stoves (VAZ, GAZ, UAZ, etc.). For example, a crane lever can be worked out, or the gum can dry, or the lever itself takes. In such cases, the stove crane is better to replace, and it is desirable immediately together with the radiator.

7. Fitting a stove control unit This malfunction also often delivers cotton owners of VAZ cars. The fact that there are problems in the control unit (on modern auto - the heater controller) indirectly testifies the poor operation of the fan in some stove work modes. Also, a faulty air temperature sensor in the car can lead to failures.

Of course, this is not all possible reasons why the stove may warm the stove, but they are most often found when problems in the car heating system.

What to do if the stove in the car warms badly

What to do if the stove in the car warms badly

If the stove in the car warms badly or does not work at all, then you first need to determine the cause of the fault, and then eliminate it. Most of all the problems with the automotive stove are manifested as follows:

  • The stove in the car warms well;
  • The stove in the car blows with cold air;
  • The stove in the car works, then no (it blows cold, then hot air);
  • The air from the stove in the car is quite hot, but blowing weakly;
  • The stove does not work in the car (not turned on).

In the table below we combined the possible causes of the irregular operation of the car's interior heating system, described how they can affect the operation of the stove, and listed their elimination methods.

Possible cause of stove fault Symptoms of malfunction Methods of elimination
Air in the system of heating salon and engine cooling

1. The stove warms well; 2. The stove blows with cold air; 3. The stove blows that cold, then hot air.

1. Remove air from the system (easy method here); 2. If the air is not deleted or appears again - check whether the cylinder gasket is broken.

Thermostat swapped in the open position Check the thermostat, when a malfunction is detected, replace the new one.
Scored radiator stove

1. The stove warms well; 2. The stove blows with cold air.

1. The surface of the radiator is pressed; 2. Rinse the engine cooling system; 3. If nothing helped is to replace the radiator.
Problems with heater crane or air damper control levers

1. Check if the cable from the levers of dampers or the heater crane is screwed; 2. If the heater is faulty, it must be replaced.

Clogged cabin filter 1. The air from the stove is hot enough, but blowing weakly. Replace cabin filter.
Fan blew badly Contact a specialist (autoelectric) to determine the causes of the fault and eliminate them.
The fan does not turn on

1. The stove in the machine does not work (does not turn on); 2. The air from the stove is quite hot, but blows weakly and only at high speed.

Problems with stove control unit

1. The stove warms well; 2. The stove blows with cold air; 3. The stove blows that cold, then hot air; 4. The stove does not work (does not turn on).

Prevention of work stove in the car

Prevention of work stove in the car

In order for the stove in the car warmed well and did not let you down at the most inopportune moment, you need to follow several ordinary tips.

  1. Keep the radiator clean. Nonal contamination of the radiator outside can be removed by a vacuum cleaner. Flushing of the engine cooling system, which is inextricably linked and the stove radiator will help to get away from the internal sediments and blocks in the canals.
  2. Use good antifreeze . High-quality antifreeze is the key to long work not only the stove in the car, but also the engine. Remember this and do not forget to replace it in a timely manner.
  3. Change cabin filter more often . The scored salon filter will definitely create problems not only for the work of the stove, but also for the air conditioning and ventilation system as a whole. In addition, dust and pollen plants deposited in the filter may provide serious health hazard (especially for allergies).

If at a temperature on the street minus 25 ° C, the stove of your machine heats the interior to +16 ° at from below and up to +10 ° C above, then it can be considered quite good. In order to avoid problems, preventive measures will be advantageously and responsibly, which will enjoy a comfortable ride in a good warm car.

And remember, the more the service life of the machine, the more attention requires its heating system. This applies to all cars, regardless of the country and the manufacturer.

Video: Why in the car heats a stove badly

One of the devices on which the comfort of traveling by car in Russia depends is the heating and ventilation system. If the stove does not work in the car, you need to try to quickly find the cause and eliminate it.

How does the stove working in the car

In old cars, the heater worked through a separate adaptation due to gasoline combustion. Today they have long been outdated and rarely apply. Salons of the current cars are heated through the cooling system of the internal combustion system.

To begin with, it is useful to know what the heater consists of:

  • Boo sauo or control unit;
  • Small radiator or heat exchanger;
  • fan;
  • hoses and nozzles;
  • Cooling fluid regulator;
  • Air dampers with drives.

Understanding the principle of functioning of modern autopsychotics will help repair the node if such a need arises. Structurally, the heater is nothing complicated. Air is served in the stove or outside, or from the inside - if the recirculation mode is enabled. It goes through the cabin filter and the air conditioner evaporator (if any). Also, air flows pass through the thermostat or by it (depends on the settings). Using the flap, the supply of heat into the legs or face of a person is adjusted, as well as on the glass.

Scheme of the heaterCar Salon Heater Scheme

At the same time, the heated antifreeze is circulated on the system, which is injected with pump. The refrigerant takes the thermal energy of the engine, cooling it. Then he enters the thermostat. Thus, constant circulation of fluid and air is ensured. It turns out some kind of apartment battery. The effectiveness of such a heating system is high enough.

You can do the adjustment of the automotive furnace in the cabin in different ways. For example, in budget vehicles, the driver can control only the fan turnover and the distribution of incoming air flows. And in premium machines, an accurate air temperature is additionally tuned.

The stove is bad: reasons

Sometimes the stove is so damaged that it becomes completely unable to warm the salon. In frosty days there is much worse, as the ice is covered with ice. What are the causes of malfunction? They can be called mechanical breakdowns, electronics problems or electrical failures. The result in any case is one - the flow of warm air is stopped.

Fan does not work

His task is to move air streams. Damage to this node is possible due to the wear of electric boards or breakage of the sleeves. This leads to unstable work of the entire system. Often, the blades do not rotate due to the problems with the power supply.

Fan stoveDisabled fan - Frequent cause of bad work stove

Insufficient coolant level

The level of antifreeze in the system drops over time, even if there are no leaks. It must be remembered, and regularly check the amount of antifreeze. Liquid always evaporates. Although this process and long, but sooner or later makes itself felt.

Faulty motor pump

Motor pump or pump performs one of the most important functions associated with the stove. It is thanks to the pump in the system circulates antifreeze. His breakdown necessarily leads to a problem - ICE begins to warm up.

Motor head laying breakdown

Trucking gasket GBC also becomes the cause of the stove failure. In addition, it causes the engine overheating.

It is possible to determine this malfunction by emulsion, unexpectedly appearing in engine oil, white smoke from the muffler and other features.

DVS itself happens troit, it does not start, behaves unstable.

When burning gasket, the exhaust gases penetrate the cooling shirt. It causes the heat exchanger to be treated, thereby reducing the efficiency of the stove. At the same time, the temperature of the refrigerant begins to jump.

Malfunction of thermostat

The thermostat is used to adjust the cooling circles. When you start the engine, the antifreeze begins to rotate in a small circle. In this process, the salon furnace and the power unit also actively involved. Thus, warming the car accelerates. After that, the thermostat opens a large circle. Warm refrigerant arrives already in the main radiator. This ensures cooling of the engine installation.

If the thermostat is damaged, it is no longer able to adjust the circles. There is a weakly preheated antifreeze in the stove. In such a situation, cold air begins blowing the flaps.

Zador radiator heater

Another common reason for the intake of cold air from the stove is to clog the heat exchanger, which is due to the cause or scale, left by poor-quality antifreeze.

Skip in heater radiatorSkip in heater radiator

It also contributes to the system of fuel, oil, lack of regular technical care. Often it happens on machines, where water was used instead of refrigerant. The accumulated dirt prevents normal air circulation in the radiator, as a result of which the stove does not work well.

The risk of clogging the heat exchanger is subject to all machines operated for more than two years. At this time, it is necessary to check the operation of the heating system and clean the part. Relatively more frequent care is required in an active road off-road.

Elimination of the cooler of the stove radiator is carried out by special chemicals corresponding to the material of the product.

Soda and other alkaline compounds cleaned copper or brass products. But these cleaning products are contraindicated for an aluminum heat exchanger, as it is easily erupted.

It uses concentrated and undivided acid. Among the finished chemistry for cleaning the heat exchanger, the complex compositions of Felix, Radiator Flush Complete, Hi-Gear and others can be distinguished.

Pumping cabin filter

The filter element effectively cleans the air falling from the street. It usually consists of synthetic fibers with antibacterial impregnation or coal. The use of the cabin filter provides comfort, but the dirty element can have a negative impact on the heater.

Filter clogging by parties of garbage, causes incorrect operation of not only the stove, but also ventilation and air conditioning systems. Therefore, the cabin filter must be replaced in a timely manner. One of the characteristic signs of its pollution is the fogging of the machines.

Dirty cabin filterDirty cabin filter


Repairs always begins with the search for a specific malfunction:

  • The refrigerant rate in the expansion tank is checked and the absence of leaks is controlled - there should be no traces of wet spots under the car left overnight;
  • Analyzed by the exhaust smile - whiteish its color becomes a reason for thorough diagnosis;
  • The heater fan at different speeds is checked - foreign sounds will indicate a malfunction;
  • The cabin air is tested - the sweetish smell will indicate the penetration of antifreeze inside the machine;
  • The heat exchanger is controlled - it is obliged to heat the motor;
  • Computer diagnostics of climate control system is carried out.

These methods allow you to identify the cause of the fault.

As a rule, the poor work of the heating system occurs due to depressurization - one of the most complex types of repair requiring the cost of time and money.

All the nodes and elements of the cooling system should be inspected, but the disorders are more often caused by damage to the heat exchanger or hoses.

In the second place to clog the radiator. It is usually blurred by the stream of compressed air. However, the general system is necessarily washed at first chemistry, and then water. The too cracked heat exchanger is desirable to replace the new one.

Causes why the stove is bad warm:

  • broken fan;
  • refrigerant leakage occurred;
  • faulty pump;
  • punctuate the gasket of the GBC;
  • damaged thermostat;
  • The heat exchanger or cabin filter clogged.

Restoring the operation of the car's heating system - the procedure is sufficiently volumetric. It is recommended to trust the specialists. Remember that incorrect actions will lead to overheating of the engine cylinder blocks. And this is already overhaul with all the ensuing consequences.

Do not warm the stove in the car: all possible causes and solutions

Do not warm the stove in the car: all possible causes and solutions

Questions considered in the material:

  • How does a car heating
  • What are the problems in the work of the stove
  • How problems in the cooling system affect the temperature in the car
  • When and how to spend the cooling and heating system
  • How to maintain the stove in the car
  • How to start the car in the winter right

Each car in our country passes through a difficult period of winter operation. Due to the low temperatures, your car may not start, emergency situations occur during ice and bouran. It also happens that it does not warm the stove in the car, and finding in your own car ceases to be comfortable, because you freeze. Why does the heating of the car cease to work properly? How to cope with such a breakdown? You will learn about this further in the article.

How does the stove working in the car

How does the stove working in the car

Before you begin to identify the reason why, when the car is standing, the stove refuses to warm, we recommend to figure out how heating works. After all, knowing the foundations of its operation, you can easily find a breakdown.

And a small sedan, and the cargo machine is made of metal. Therefore, thermal changes are strongly affected on the body:

  • In the heat, the car warms up to a temperature of 40-50 degrees Celsius. In winter, the car will be warmer than on the street, just a couple of degrees. To move on the car with comfort in the summer months, we use the air conditioning system.
  • In the cold season, it is possible to maintain the optimal temperature in the machine using the heating system. Moreover, in our country, to use the stove most of the year, so it must heal.

Previously, the car warmed up using stove-bourgeities, as well as gas lamps. And only in 1917 on cars produced in America, they began to establish an autonomous heating system: the car began to warm up due to heat from the exhaust pipe. For example, this method of heating was used in the Ford A model of 1929. In addition, cars began to warm up the radiator installed, which blocked the fan. Such a heating system was used on "General Motors" models. Over the years, each car began to heated using such a system.

Heating system in 1917

Each modern machine is equipped with a heating unit, which is made of such components as:

  • Motor fan;
  • air duct system;
  • Supporting, as well as removing nozzles;
  • Heat exchanger stove;
  • Crane, regulating the flow of coolant;
  • Heating equipment control unit;
  • The damper whose drive can be mechanical or electrical.

Usually the machine is equipped with a stove, which is located behind the front panel. There are 2 tubes that feed the coolant liquid into the radiator. It moves through the pump (pump) both on the cooling system of the motor and the heating system.

Warm exchange is possible due to the heating of the motor. Its cooling occurs due to antifreeze: it takes thermal energy. The heated antifreeze enters the stove radiator, which warms the same principle as the standard battery at home. In parallel, the fan stove starts work. It provides a cold air flow through the radiator. Here again is the exchange of heat: the air is heated at the expense of the radiator, cooling it.

The warmed air flow is sent to the salon, and the cooled toosol enters the engine where the heating process begins again. This heating system is applied on most cars, since its effectiveness is high enough. In winter, the car warms down if the air is blowing out of the stove with a temperature of 30 degrees Celsius. So not only the salon warming is ensured, but the glasses remain unsuccessful. The dashboard is set to the switch mode switch. With it, you can change the location of the flaps that adjust the air flow. It can be directed straight, down, up.

Almost all the time the warm air should be directed up - that is, on the windshield. Only in the cabin, the optimal level of pressure is maintained when condensate is not formed on the glasses, and the dust microparticles do not penetrate the inside of the car.

Warm air should be directed up

The stove plays the role of another radiator. Therefore, when the car is cold, and you turned on the heating, the entire system begins to cool. As a result, the walls of the radiator rust, the engine, like the car, is warmed longer. Air humidity rises, the glass is fisted from the inside. This means that the stove can be included only if the temperature of the coolant has risen at least up to 50 degrees Celsius.

Operation of the stove in the car

Most often no problems when repairing the stove in the car, when it does not heat, does not occur. Standard manipulations that will help solve the problem - disassembling and cleaning the elements of the heating system from dust and dirt.

But in some cases there are serious breakdowns.

Why, even if the car is working, the stove in it warm it badly? The reasons may be the following: a radiator or a crane has been hammered, a pump broke.

When the pump is defective, leads the engine of the engine cylinder block, as a result of which the motor overheats. Unfortunately, only engine overhaul will help here.

When the incoming stove radiator hose is hot, while the outlet hose is cold, most likely, a crane breakdown happened. This breakdown is excluded? Then you have to replace the stove radiator. During operation, it accumulates a scale, which can be quite a large amount.

It also happens that an air traffic jam is formed in the stove. The reason for this lies in the fact that the tubes are not wide enough, so the fluid flow cannot be eliminated. How to remove the plug? We wait until the machine and the engine warm up, weakening the clamp on the hose, remove it from the tube. At that moment a small gap is formed, through which an excess air will be seen.

Stopped to warm the car, and in the cabin it smells bad? Most likely, the radiator contaminated and stopped warming, and rotting began inside it.

The machine has nodes that need to be regularly inspected and repairing, and the stove is no exception. Therefore, the older the car, the worse the radiator will be warm and the more seriously need to be prepared for its preparation for the cold season.

Operation of the stove in the car

How to determine what car does not warm? Focus on generally accepted indicators. So, if the temperature has dropped to -25 ° C outside, then at the bottom of the cabin should be at least +16 ° C and +10 ° C at the ceiling. Otherwise it is believed that the radiator does not warm in the car.

Do not forget that the older your car is, the more carefully you need to follow the health of the stove.

Consider the reasons why the stove in the car warmly warms either in the cabin enters the unheated air.

Why does not heat the stove in the car, and how to fix everything

Radiator - the main element of your car stove. The purpose of the radiator's work is to warm the air flow from the outside before it falls into the salon. Consequently, if the stove has become bad, and the car is cold, the first thing to do is check the radiator.

1. The coolant does not pass through the radiator.

The coolant does not pass through the radiator

If you were filled into antifreeze water, Tosol or a cooling liquid of another brand, then a clogging solid precipitate appears in the radiator channels, due to which it will not be warm.

The same will happen if all sorts of cleansing additives are advised in antifreeze that familiar or whom you learned on YouTube.

If deposits and scale are formed in the radiator, then the cells will be broken, and the antifreeze movement will be broken. How to do in case the car is cold, because the stove stopped warm:

  • We purchase another, you can use the radiator. Choosing from several contract parts, give preference to a lightweight model;
  • Rinse the radiator. You can do it on your own. It will take 50 g of citric acid, which should be divorced in 1 liter of heated water. We unscrew the hoses from the heating system, tightly screw them to two plastic bottles. And in advance from the first bottle, we produce air, and in the second pour the resulting liquid. Compress one, then another bottle so that the solution circulated on the hoses, cleaning the radiator;
  • We change the pipes in places. So antifreeze will move to the other side, and the accumulated scale will be cleaned, in the cabin your car will become warmer.

Removing and replacing the radiator - the process is not easy, it does not matter what car you have. We recommend to start cleaning the radiator, and then it will begin to warm. However, this procedure helps only 50% of problem situations. In addition, the removal of solid deposits can lead to the appearance of leaks.

Performed flushing, but the stove in the car warms everything as weak? Then we proceed to the cleansing of the entire cooling system, pour a new cooling fluid.

When the car at idle and does not warm the stove, then a worn radiator is almost always the cause of this. It is possible to prevent such a situation, only timely conducting prevention. How to do it, let's talk further.

2. The radiator is heated, but the stove does not heat.

Wine everything is a breakdown of an electric motor that rotates the fan. How to eliminate breakdown? Install a new electric motor.

3. Faults of the controls of the stove or electronics.

Faults of the controls of the stove or electronics

Do not forget about the inclusion buttons, the temperature levers of the temperature regime, as well as the electronic relay.

For example, the air damper may not work because in the climate control unit or in the temperature sensor there was a breakdown. In such a situation, the signal does not enter the drive, which cannot open the flap, and therefore, the salon is not heated, but the cooled air.

The breakdown may occur if the temperature switch is set to the selected position at the time when the battery terminal was removed.

When the stove in the car does not heat for these reasons, it is possible to fix the problem as follows:

  • To buy and install new heating elements instead of broken;
  • manually rearrange the valves of the crane in the open position;
  • Put the temperature lever to the maximum, chop up the terminal. Then put the lever at the minimum temperature, check that the temperature is normally adjustable.

This manipulation did not remove the breakdown and the car cold? So a malfunction is much more serious. To find out the reason why the stove does not heat the car, you will have to go to the car service where the professional will disaster the heating system and distributes it.

4. Pollution of the cabin filter.

Pollution of the cabin filter

Stop to warm the stove in the car may be due to the fact that the filter contaminated. To troubleshoot a malfunction, you have to install a new filter.

In the case when the filter is absent (and it also happens), remove the accumulated dirt from the duct. If it turns out, get up to the stove radiator, perform its purge with compressed air.

5. Fan problems.

The reason that the machine is not warming up, there may be not only a stove. Thus, the radiator may be poorly blurred, as a result of which thermal energy is not given due to the fact that the fan is faulty.

What can be taken in this case? When the fan is completely broken, the situation is extremely clear. But if he albeit slowly, but still rotates? Most often, the reason for this is the worn brushes of the electric motor or jamming bearings. To eliminate such damage, in any case it will be necessary to turn to the experienced auto electrician.

6. Farmake of the damper servo.

Breakdown of servo valve

Why is the car heats, but the stove does not heat and is still cold in the cabin? The reason is the malfunction of the damper. In new cars, the radiator of the heating system is heating always, the warm air goes into the salon if the duct valve is open. But when it is open not to the end either does not open at all, the salon will not be able to warm up.

The servo drive leads the damper in motion, you can control it using a handle or buttons on the climate control panel. The breakdown can occur directly in the servo drive or in the cables and traction responsible for the movement of the damper: they can slip.

How to eliminate breakdown in this case? To find out the cause will turn out after the heating system panel will be dismantled. Saw that cables or thrust jumped up? Install them back.

Determine that the servo drive broke, it will be possible only in a specialized car service. Mostly servo drives are not repaired, but install a new item immediately.

7. Exactness of the stove case and the radiator shift.

There is also such an infrequent breakdown as the depressurization of the case. It may happen after the accident, the poor-quality assembly of plastic stoves, when there are damage, clearances, through them the heated air will go out. And this means that the interior of the car will not be able to warm up.

Sometimes due to poor-quality latches and other shortcomings in the design, the radiator moves to the side. The air flow from the fan enters in this case not on the radiator, but next to it. Such a situation happens if the damper of the air duct is in the closed position: the machine will remain unleashed.

And in the first, and in the second situation, the torpedo disassembled, only so you can reach the heater to adjust its work, eliminate all the shortcomings, close the junctions between the elements of the case, set the radiator to the desired position, firmly attaching it.

Of course, all manipulations can be made on their own, but this work is quite complicated. To prevent errors, it is recommended to visit the car service.

What to do if the stove is bad in the car

The reason why the stove does not warm when the machine is worth it may be a malfunction of the engine cooling system. The following elements usually fail:

1. Thermostat

What to do if the stove is bad in the car

This mechanism is embedded in the process of transporting the heat sink fluid. The thermostat is responsible for adjusting the movement of antifreeze over the system - a large or small circle.

So, moving along a small circle, the antifreeze passes through the cooling shirts of the cylinder block and the head, but not through the radiator: so the antifreeze is heated faster, and the operation of the motor becomes stable.

If the thermostat breaks on a large circle, the pump starts pumping fluid through the radiator. This means that the coolant heats up significantly slower. A little warm liquid cannot warm the car's salon radiator in a short time, as a result - the stove does not heat the car. How to eliminate this breakdown? Only installing a new thermostat.

The normal heating of the thermostat says the normal heating of the cabin, when you are driving slowly, and on the contrary: the stove in the car does not heat if you move along the track. If both radiator hoses are heated together, most likely, the thermostat is in the open position. If the machine is proper, then when the engine is turned on, one hose is heated, and the other will remain cool.

2. Insufficient coolant level

Insufficient coolant level

When in the field of connection of nozzles, leakage is formed or on the radiator, a decrease in the coolant is observed. As a result, it is badly moving around the radiator, which means it warms it worse. The same happens when air traffic jams occur: they appear during the top of the antifreeze or during its replacement.

If antifreeze or antifreeze is not enough, then the heated coolant will not go into the radiator in sufficient amount, and the stove does not heat the car's interior.

To eliminate this malfunction, you will have to eliminate the leakage of antifreeze, install a new gasket of the cylinder block, attach the missing fluid into the expansion tank to the required volume.

3. Recent cooling system

Why, when the car stands, the stove does not heat? This may occur due to air penetration due to the fact that:

  • The gasket separating the block and the head of the cylinder block was worn;
  • there was a replacement of a thermal conducting fluid;
  • There was depressurization of nozzles, heat lines and the like.

Find out the true cause of the breakage will help measure the level of fluid level in the radiator, the expansion tank, under the plug in the collapse of the V-shaped motor block. When the machine is not started and the engine has cooled, the amount of antifreeze should be the largest.

How to fix the problem:

  • When the motor cools, remove the radiator cover and pump the system. To do this, squeeze and squeeze the hoses that go to the radiator. We do it until the air comes out. Then we close the radiator, we start the car. A couple of minutes after the machine becomes necessary, you will need to make data for manipulation again.
  • First of all, the machine must be raised with the help of a jack (you can call in front of the elevation). Now you need to open the radiator and the expansion tank. The next step: the car is started, 2-3 times strongly pressed on the gas pedal, in parallel to fill the coolant. Upon completion of manipulations, we set the radiator cover and close the expansion tank.

4. Wear pump

Wear pump

Using the pump (pump), the coolant is pumping from the motor, as well as the constant movement of antifreeze throughout the cooling system. You will immediately understand that the pump broke out, because the engine will start overheating and boil.

Pump is made in the form of a metal cylinder, it has an impeller on the pulley. When the pulley rotates, it begins to push the antifreeze from the engine block to radiators through the nozzles.

The pump rotates due to the belt transmission, but in some machines it works through the drive.

As the pump breakage is manifested:

  • The impeller flashes from the inside. The reason - during its manufacture, the antifreeze was used negatively, antifreeze: at the time when the pump pulley rotates, the cooling fluid does not circulate, which means that the stove does not heat the car.
  • From the crankshaft of the motor broke the belt. Pomp simply will not be able to rotate, it is natural that the interior will not warm up, and the motor overheating will occur.
  • The pump jammed, it cannot rotate, therefore, the cooling fluid does not circulate.

You can get rid of listed problems by replacing a defective unit. To determine that the pump broke, you will be able to perform a specific dissertation in the processionate space when the machine is started, as well as on the temperature of the hoses. When the hose before the pump is superheated, and after the pump is cold, it is recommended to install a new part until the pump broke down completely.


Trucking gasket GBC

The most difficult breakdown, but it happens infrequently. The motor overheats, while tightening the head of the cylinder block is insufficient - all this leads to damage to the gasket. When the breakdown occurs between the cooling shirt and the combustion chamber in the coolant, gases will begin to flow to the formation of bubbles. The movement of antifreeze will be slowed down, air traffic jams may appear, the radiator will not warm.

How to determine what gasket spoiled? Belest pairs, resulting from the fact that antifreeze enters the cylinder will be out of the silencer. In the expansion tank, you can see the air drilling, boiling and leakage of the coolant due to high pressure.

Certain this malfunction will not work independently. Therefore, if your car has all signs of the breakdown of the GBC laying, visit the specialized car service. Otherwise, this breakdown may cause you that you have to spend an impressive amount for the repair of the engine.

How to avoid problems with a car stove

If you want in the cabin of your car it is always warm, follow the following recommendations:

  • Use high-quality cooling fluid. After all, antifreeze affects the functioning of both the stove and the motor. Choose a proven manufacturer, change the liquid in a timely manner. Your machine has an instruction manual where the frequency of the toosol is indicated.
  • Clean the radiator. Take the vacuum cleaner to remove the contamination from the outer side of the device. Inside the radiator, it turns out to be cleaned using a special detergent solution for cleaning the car cooling system.
  • Replace the cabin filter regularly. If it is contaminated, then not only the stove in the car will not warm, but also the system of ventilation and air conditioning will be incorrectly operated. In addition, pollen and dust accumulate in the dirty filter. To be in such a car, a person with allergies can be dangerous.

Service and repair of the stoves in the car

Service and repair of the stoves in the car

Knowing the reasons why the stove in the car ceased to warm, in some cases you can eliminate the malfunction on our own. For example, install new cabin and air filters. It is recommended to do this once every 7,000-15,000 km of run. Consider how contaminated roads, the magnitude of the city's zagaznosti. However, even this manipulation is not easy to spend, because to install a new filter, you will need to disassemble the glove box or control pedals.

Standard breakdowns of the machine heating can occur along with a decrease in the functionality of the motor due to the contamination of radiators (dust, poplar fluff).

Specialists do not recommend mechanical cleaning of the radiator: the heat exchanger is made of fine metal, it can be broken. When you visit a specialized service center, a compressed air is used there, a stream of water of a certain pressure for cleaning the unit. If the malfunction of the standard or autonomous heater is more complicated, it is better to turn to professional mechanics.

To avoid situations when the car is cold, and the stove does not heat, you will have to replace:

  • Radiator, if the mechanical abrasion of cells occurred, the antifreeze circuit;
  • impeller or fan electric motor;
  • nozzles and tees;
  • Electrical control elements: resistors, controllers, thermal sensors;
  • heater cranes;
  • air damper servo;
  • Recycling valves;
  • Switches of functioning modes.

Actions to dismantling and installing the heating system should be performed according to technological maps. Before repair work, you must diagnose the breakdown, know where the nodes are placed, understand the ways of disassembling and assembling.

In specialized services for repairing machines, not only a repairing stove, but also disinfected the interior, as well as air ventkanals, produce a radiator washed.

How to get hurried cars in frost

How to get hurried cars in frost

Each machine needs the right warm warm-up. How to warm it, I must know even a novice driver. The most important thing here is the car should be a fundamental in advance (15-20 minutes before the planned trip). So it will work most effectively, even despite the minus temperature.

1. Preparation of the car engine to launch

Before you are heading the motor, you should briefly include the Middle Light. To the battery "woke up", you will need only half a minute. Then squeeze the clutch so that the starter turns off from the crankshaft and the gearbox. After that, we include neutral transmission.

So the engine launch will be easier, despite the strong frost. Does your car work on diesel fuel? Then we wait until the heating spiral of the heating of diesel will go out. It is best to do this manipulation with heating candles 2-3 times.

2. Running motor

It happens that the motor will not start immediately. Do not immediately try to start the car again. So you just set the battery and spoil the starter. The recovery of the battery will require only 30-40 seconds, after which the machine must start.

Finally, the car started. Do not hurry to warm the windshield. Wait a couple of minutes. The engine is not yet enough warmed up so that energy can be taken from it.

Running motor

We do not advise you to include by blowing the glass hot air. Surely on the windshield -Mikrotechnogi, so you just make them more. To begin with, the air flow should be sent to the salon, then you can switch it to the glass. So the car in winter will warm up correctly.

Now that the car started, and the heated air goes into the salon, proceed to cleansing the car from snow outside. So you wisely spend every minute of precious time.

Carefully remove the snow from the windshield and side windows. The cleaner they will, the better the driver will be visible the road situation during the trip.

In the cold season, the car will warm up the longer, the lower the temperature on the street. Affects the heating and how the machine is actively operated. Usually grabs 15-20 minutes so that the car is well warmed.

3. The beginning of the movement

The cold engine will work on elevated circulation and idling. As soon as the car started, the tachometer will show 1,200-1 300 revolutions per minute. When you finish you to warm the engine, this indicator will fall to stable 1,000 revolutions.

Noticed the fall and stabilization of revolutions? So, the car is ready to go. And at the very beginning of the movement (10-15 minutes) the car should go at low speeds. 1 000 meters should be driving, moving no more than 40-60 km per hour. Then gradually increase the speed of movement.

Acting in this way, you give the engine enough time so that it warms it. Otherwise, the motor will experience high loads, and its parts will be quickly wear out, the car breaks.

Autonomous salon heaters

Autonomous salon heaters

In addition to heating functions, when the motor is turned on, sometimes it is necessary to warm up the salon and the car engine in advance. To solve this problem, the vehicles are equipped with autonomous heaters or preheating heaters.

The following companies have proven themselves well that produce autonomous heaters: Webasto, Eberspacher, the Russian brand "Planar".

Even taking into account the wanted attitude of car owners to such installations, these devices have undoubted advantages. So, if the machine is equipped with an autonomous heater, it will no longer need to warm the engine in good, and therefore, the waste of gasoline will decrease.

You include an autonomous heater, for example, from your home. You sit down in the already warm car, glass and whose janitors were excited, even if the stove in the car does not heat. Since the cold start with immentable oil is no longer produced, the engine resource increases sharply.

In some European countries, if the car is cargo, then according to the law, it must be equipped with an autonomous heater. Only so the car will be a fundamental way. If this device is missing, the driver of the car is not right to screw in or relax in the truck cockpit during parking or in cargo parking. Thus, in European countries, harmful emissions of exhaust gases are reduced, because the machine is no longer needed for a long time. And the noise level also decreases.


The machine warms up with an autonomous heater so: the device begins to heat it, working at the expense of gasoline, gas or diesel engine, which is covered in your vehicle. Accordingly, these devices are divided into the following types: gasoline, diesel, gas. There are usually no fundamental constructive differences between different models.

Each model of the autonomous heater, which will warm your car, is in a miniature building, where there are:

  • Sealed combustion chamber;
  • fuel supply pipe from the machine;
  • air blower;
  • circulation pump;
  • heat exchanger;
  • Ignition Candle or Glow;
  • overheating sensor;
  • Control block.

The smallest dimensions in autonomous heaters working on gasoline. Their power is 46 kW, it is possible to place such installation under the hood of the machine that it will warm. Heaters and Pre-Liquid Motor Heaters, functioning on diesel fuel, have a greater power - 82 kW and large dimensions, mainly they are placed on freight cars.

There are electrical models that will warm the car without using gasoline, gas or diesel engine. The principle of operation of such a device is similar to the operation of the fan. The heater is sometimes called autophen. In the sealedized case from ceramics is placed in retractable and exhaust fans. There is also an electrospioral or ceramic details that will warm air. Autonomous electrophole, operating from the battery of the machine with a cigarette lighter, has low power. It is not able to warm the car's interior alone, most often it is used as another source of heat.

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