Reasons why the Lada Granta, Kalina 2 stove does not heat well »

If there is quite a strong frost outside, and the interior of your car does not warm up in any way, you should pay attention to the serviceability of the engine cooling system, since the performance of the Lada Granta stove depends on it.

1. Coolant. The condition of your car’s coolant should be constantly monitored, and not only when the heater in the Lada Granta is not heating well. The normal coolant level should be kept between about and the “maximum” of the corresponding tank.

If the level is too low, problems with the sealing of the entire cooling system may occur. As a result, the pressure inside the system decreases significantly. If this problem is not resolved, then there is no point in hoping that the stove in the Lada Granta will work well.

1. Thermostat. It may happen that in the thermostat position, in which the coolant circulates in a large circle, the thermostat valves become stuck. This is the reason that in the cold season the coolant is simply not able to warm up to normal temperature and ensure good operation of the stove.

In order to be convinced of the presence of this particular problem, it is necessary, no matter how strange it may sound, to get into a traffic jam.

If the problem is really in the thermostat, then the car will literally begin to overheat in a matter of minutes. And when driving along the highway at a decent speed, the engine, on the contrary, will cool too quickly.

1. Air temperature regulator damper. If the stove in your Lada Granta does not work well enough, perhaps the reason lies in the functioning of the air temperature regulator damper. And all because the position of the damper directly determines the intensity of the air flow that will pass through the heater radiator, as well as the amount that will enter the car interior, bypassing the radiator.
2. Heater fan and fuse. It is necessary to monitor very carefully whether the heater fan starts working. If this does not happen, you should check the functionality of the fuse called 30A. It is green in color and indexed F4, located in the additional concentration of power fuses, which is under the hood, not far from the expansion tank.

Thermostat has failed

Another reason when the stove on a Lada Grant does not heat well is that the thermostat has broken. How to determine a malfunction, by what signs? When the engine is warm, the antifreeze does not warm up above 76 degrees when the air intake damper is open. In this case, only a complete replacement of the thermostat will help.

The standard thermostat installed on the Lada Grant opens at a temperature of 85 degrees. In automotive stores you can find thermostats that are designed to operate at a temperature of 92 degrees. Therefore, according to theory, the interior of the Lada Granta should become warmer in winter.

Cooling

To cool the interior air, do the following:

1. Switch switch 1 (see Fig. 2) of the electric fan operating modes to one of the positions “1”, “2”, “3” or “4”.
2. Place the regulator handle 4 opposite the pictogram.
3. In the 3 pushbutton switch block, press the air conditioner switch key. The indicator located on the switch button will light green all the time the air conditioner is operating.

When the air passing through the evaporator cools, the water vapor contained in it condenses. The condensate is drained through a drain pipe under the bottom of the car. If the ambient air humidity is high, a puddle of water may form under the car, which is an indirect sign that the air conditioning system is working properly.

Turning on the air conditioner while the engine is running under difficult conditions (long climbs, heavy city traffic, etc.) can lead to engine overheating. Monitor the coolant temperature gauge: if the temperature exceeds the permissible value, turn off the air conditioner.

• climate block grants
• air duct grants
• air conditioning grants
• stove grants

Lada Granta is one of the most popular cars in Russia in 2022, along with KIA Rio, VW Polo, Lada Vesta, Hyundai Solaris and Hyundai Creta. This popularity of the car is explained, first of all, by the optimal combination of price and quality: Granta owners note good visibility, an acceptable power unit, ease of maintenance, low cost of spare parts, a spacious trunk, high ground clearance, which is extremely important for Russian realities.

Among the components that are indispensable in the cold season is a heater, the main component of which is the radiator. If a situation arises when it is necessary to replace the stove radiator, then in most cases this can be done without outside help. What should the owner of a Lada Granta remember who has decided to replace the heater radiator on his own?

Heater radiator: responsible for heating the interior

It’s hard to imagine a modern car without a standard set of devices and options, thanks to which driving the vehicle becomes as convenient as possible, and staying in the cabin is comfortable and safe. The functions of maintaining a favorable temperature regime in the car are assigned to the heating, air conditioning and ventilation system, which, depending on the situation, can heat, ventilate or cool the air in the cabin. At the same time, one of the key components of the heating system is the stove, which includes a radiator that acts as a heat exchanger. The air entering the car interior is heated by the radiator, and it is heated by the liquid that cools the engine.

"Lada Granta" is equipped with a large number of options, thanks to which driving the vehicle becomes quite convenient

Rules for using a standard heating system

The car's operating manual outlines the basic principles of operation of the ventilation, air conditioning and interior heating systems. To quickly warm up, you need to switch the damper to the air recirculation position and the fan speed to the “maximum” position. In this case, the car windows must be closed. You should not drive in this mode for a long time, as this can lead to fogging of the windows.

The main reason for the accumulation of condensation is the difference in temperature inside and outside and high humidity. To prevent the windows from fogging up, you need to warm them up by pointing the heater deflectors at them and dry the air by turning on the air conditioning. However, when the vehicle is driven under heavy loads (for example, on long climbs) with the air conditioning turned on, the engine may overheat, so in such conditions it is necessary to monitor its temperature. Condensation is usually the result of luggage blocking the vents.

Incorrect operation of the ventilation and heating system may be caused by a malfunction of the temperature sensor located in the interior lamp. It is not recommended to drive with the windows open in hot weather with the air conditioning running.

The vehicle's ventilation, air conditioning and heating system creates conditions for normal and comfortable driving in any climate zone. AvtoVAZ engineers developed and implemented a simple and reliable heating concept for the Lada Granta model. But for the system to operate effectively, certain rules must be followed, which will help avoid unexpected breakdowns.

Hello everyone, dear friends, especially owners of the Lada Granta car. If you have come to this page, then you are concerned about the question of why the stove does not heat and blows cold air. Let's try to analyze the main causes of this malfunction.

The engine cooling system is responsible for the efficient operation of the heater, and all the heat that enters the cabin comes from the antifreeze, which passes through the heater radiator. And it would be logical if, if the stove is not working well, we check the operation of the cooling system, as well as the main components of this system. So, let's go.

The first reason, the most common one, is the coolant level. If the fluid level is between the minimum and maximum marks, then everything is in order, but if the level has dropped, it means that the system has leaked somewhere and if this malfunction is not corrected, then firstly you will not have enough antifreeze, and secondly the stove will not work well and blow cold air.

How to improve the operation of the stove on the Lada Granta

If a car is, in fact, a second home for you, but only on “wheels,” then, of course, you will not give up on the problem of poor interior heating. Nobody wants to be in a “metal freezing trap” in winter. But this is exactly how you can view a car in which the stove refuses to function.

The masters know exactly what to do in this case, but for such knowledge, and even more so for their actions, you will have to pay by taking several large bills out of your wallet with great sadness. We suggest that you do not follow traditional methods of solving the problem, but roll up your sleeves to independently find and eliminate the reasons why the stove in your Lada Granta does not work.

Let's sum it up

The heating system is simple. Timely diagnostics can save the owner of a LADA Kalina from unexpected breakdowns; the heater circuit will also help with this. Monitor the level of antifreeze, change it according to the regulations, and the system radiator will serve its regulated life, delighting you with warmth and comfort in the cabin.

The standard heating and ventilation system on Grant is designed to create and maintain a comfortable microclimate in the vehicle interior.

Cabin filter

The cabin filter is responsible for the frequency of the air ducts, protecting the fans and radiator from contamination. Often, many car owners remove the cabin filter to create a more powerful air flow from the air ducts, which soon leads to contamination of both the air ducts and the radiator with fan.

If there is a weak air flow from the heater, then most likely the cabin filter or heater radiator is dirty.

Additional Tips

However, it also happens that the problem with heating the interior consists only of some small mistakes. Therefore, before you start disturbing the service center workers, check whether all the dampers on the stove are set in the required position. It wouldn’t hurt to tug the hot air damper a little.

There is a possibility that it is simply stuck. And, with a significant push, it will be moved from its place.

Hi all! Cold air is blowing from the stove, the thermostat is new, the pump is new, the antifreeze is normal, the cylinder head gasket was changed, the air was removed, only the stove radiator remained untouched and has never been changed in 280,000 miles.

Today I looked into this matter and lost weight from what I saw

by Adminrive · Published 06/27/2016

I close the car and it says that the trunk is not closed.

by Adminrive Published 03/06/2017

Extender cap

The expander cap is a reliable element, but it can also fail and impede the circulation of fluid through the system by creating a vacuum. The lid is a valve that opens and closes as necessary to supply the expander with air, which helps prevent vacuum from forming in the system. If the valve jams, a vacuum will be created in the system, which will lead to poor fluid circulation and insufficient heating of the interior.

Clogged pipes and heater radiator

During the operation of the car, dirt accumulates in the pipes and the radiator itself. This may occur due to the use of low-quality coolant or its untimely replacement. As a result, circulation in the system deteriorates, which is why there will be no heat at idle.

The way out of the situation is to flush the entire cooling system. It is necessary to drain the antifreeze, add distilled water, adding a small amount of citric acid. There are also special cleaning products. We recommend washing in several stages. In very difficult cases, it is better to replace the stove radiator.

Signed up with another dealer

I will not name the city in which I again made an appointment with the showroom specialists from AvtoVAZ. The time was set for 8 a.m. to allow enough time for repairs. After lunch they called me and said that everything was fine with the car. This is normal operation of the stove.

I did not agree with them and began to prove that this could not happen. Explained what they did in the previous service. But the masters did not want to take measurements on another car. This was also the end of the matter at the second car dealership.

general information

Grant's cars are equipped with fairly high-quality stoves; the manufacturer equips them with aluminum radiators. The heating system itself is a single complex; in addition to the already mentioned radiator, which acts as a heat exchanger, it also includes other units and components: in particular, a fan, deflectors and air ducts.

The air ducts are designed to supply air flow from the heater to the windshield vents and to the vents on the dashboard. They also supply air to the air ducts, which ensure its transmission to the feet of the people in the cabin.

While the car is moving, air enters the heater thanks to the holes located in the windshield trim. To increase the power of the air flow entering the cabin, both at the time of movement and during parking, a fan should be used, the rotation speed of which determines the intensity of its supply.

The uniform flow of air inside the car is ensured by an air temperature sensor, the inlet of which must be protected from any contamination. Special switches are provided to control the speed and direction of incoming air. In addition, with their help you can determine whether cold or heated air will come out of the heater.

Remember that the stove does not tolerate violations of operating rules, since each of its elements plays its own, very important role in the operation of the entire heating system. That is why the malfunction of any of its components will disrupt the normal functioning of all the others, be it a broken radiator or a failed tube.

Lada Granta stove does not heat well reasons

Why and why they install a thermostat from grants, I think there is no need to explain to anyone. When installing it, absolutely all the coolant passes through the heater radiator and, logically, the engine should warm up faster and the interior should become warmer (which is what my 9 lacks in cold weather, which we experience quite often) When the temperature drops beyond -20 degrees, the interior It takes a very long time to warm up, below -30 it’s simply not possible to warm up the interior.

Before replacing the thermostat, I screwed up the heater tap, I thought it was jammed and that was causing poor circulation, but as it turned out, it simply wasn’t there and everything was connected directly before me by the previous owner.

Then I tried bending the damper cable - it didn’t help. Then we’ll go by the method of elimination and start by replacing the thermostat; if that doesn’t help, then it’ll be a radiator, I thought.

So! To carry out the operation we will need:

The damn phone froze and only took a couple of photos, although I photographed the whole process in detail ((It’s a shame. I’ll try to explain the process without photos, describing each step and using photos from the Internet.

1) Turn on music in the garage 2) Carefully pour the antifreeze into a clean container (if fresh) 3) Apply a mark with something sharp (as in the photo) at the junction of the ignition distributor with the engine block, so that you don’t have to look for the ignition later,

4) After unscrewing all the clamps, remove the thermostat, as well as the spacer that is attached to the engine block. It should look like this

5) By tightening one nut against another (counter nut), which remained when removing the spacer, we unscrew the original studs. We clean the contact surface of the thermostat, and then tighten new 80mm studs using the same method.

6) Install the gasket and thermostat. 7) Connect the upper radiator pipe to the thermostat.

We also connect the thinner pipe that goes to the stove to the thermostat. 9) We leave the lower pipe as original, but we put a 32-18-32 tee on it, ideally, but I couldn’t find one and bought 32-16-32. Doesn't flow. We put a connecting tube on the tee, which we cut out from the new pipe and connect it to the pipe that goes to the pump. We tighten all the clamps so that you don’t have to remove the distributor if you suddenly need to change any of the pipes. It should look something like this

Spare parts that should remain after replacement.

All. It is clear that for some this procedure will seem elementary, but not all of us are auto mechanics)). It is for these people that I tried to write this article. I hope this will be useful to someone.

UPD: Frosts showed that installing a thermostat from a grant in my case allowed the engine to warm up faster to operating temperature. Now I’ve given up cardboard altogether, because now, even on the highway and in the cold, the engine keeps the temperature at 90 degrees and a penny.))) But this didn’t make the cabin any warmer, so we’ll dig further...

To be continued. I have already completely removed the panel and heater, but more on that in the next part...

The Lada Granta passenger car, which is considered one of the most affordable in the world, is equipped with a “stove” (or simply a heater) that is standard for VAZ cars. Typically this unit works very well, but problems can still occur. Therefore, if the Lada Granta stove does not heat well, then there must be reasons for this that simply need to be discovered.

Poor air duct sealing

The Lada Granta passenger car, which is considered one of the most affordable in the world, is equipped with a “stove” (or simply a heater) that is standard for VAZ cars. Typically this unit works very well, but problems can still occur. Therefore, if the Lada Granta stove does not heat well, then there must be reasons for this that simply need to be discovered.

If there is quite a strong frost outside, and the interior of your car does not warm up in any way, you should pay attention to the serviceability of the engine cooling system, since the performance of the Lada Granta stove depends on it.

1. Coolant. The condition of your car’s coolant should be constantly monitored, and not only when the heater in the Lada Granta is not heating well. The normal coolant level should be kept between about and the “maximum” of the corresponding tank.

If the level is too low, problems with the sealing of the entire cooling system may occur. As a result, the pressure inside the system decreases significantly. If this problem is not resolved, then there is no point in hoping that the stove in the Lada Granta will work well.

1. Thermostat. It may happen that in the thermostat position, in which the coolant circulates in a large circle, the thermostat valves become stuck. This is the reason that in the cold season the coolant is simply not able to warm up to normal temperature and ensure good operation of the stove.

If the problem is really in the thermostat, then the car will literally begin to overheat in a matter of minutes. And when driving along the highway at a decent speed, the engine, on the contrary, will cool too quickly.

1. Air temperature regulator damper. If the stove in your Lada Granta does not work well enough, perhaps the reason lies in the functioning of the air temperature regulator damper. And all because the position of the damper directly determines the intensity of the air flow that will pass through the heater radiator, as well as the amount that will enter the car interior, bypassing the radiator.
2. Heater fan and fuse. It is necessary to monitor very carefully whether the heater fan starts working. If this does not happen, you should check the functionality of the fuse called 30A. It is green in color and indexed F4, located in the additional concentration of power fuses, which is under the hood, not far from the expansion tank.

The main purpose of a stove heater is to maintain a given temperature in the car interior, as well as to ensure an uninterrupted supply of oxygen inside.

Type of ventilation: supply and exhaust.

Heating circuit of Lada Granta: control is carried out by mechanical regulators that change the air flow speed and the direction of the damper.

In order to prevent unpleasant odors from entering the cabin, a cable-type air flow intake switch is pre-installed.

Let's look at the design of the Lada Granta stove in the “Norma” configuration:

• radiator;
• three air pipes supplying flow to the left/right/central deflectors;
• control module;
• radiator housing;
• rubber seals;
• fan;
• fan housing;
• cables, mechanical rods of dampers;
• regulator resistors.

Heater radiator

In the modification with a pre-installed air conditioner, the list is supplemented by a separate air duct, evaporator, and heater unit housing.

To adjust the fan speed mode, the regulator has a gradation scale. The car owner independently selects the optimal fan rotation mode.

Heating system regulator in the cabin

Failure of the regulator blocks the operation of the entire vehicle interior heating system.

The type of interior ventilation and heating system is supply and exhaust. The operating temperature of the interior heating fluid is in the range from 90 to 94°.

Warm (hot) air is supplied to the cabin by an electric fan. The feed speed is adjusted by a special regulator, which accelerates (reduces) the rotation speed of the impeller.

The electric motor has four positions:

• first;
• second;
• third speed;
• position: off

Stove motor

Air intake follows from the outside through air intakes under the frill in the engine compartment. A filter is pre-installed to clean the flow. Filling: synthetic material.

Air is exhausted through a ventilation window in the rear of the car, behind the bumper.

The heater module is installed in the central part of the dashboard, under the panel. During engine operation, the liquid heats up and circulates along the circuit (water jacket).

The amount of air that comes from outside is regulated by the driver. The flow distribution is also controlled by a damper using a cable drive.

1. We place the car within the perimeter of the repair area and open the hood.
2. Let's start the engine.
3. Turn the regulator counterclockwise to the blue sector.
4. Using the lever, we alternately activate the first, second, third fan speeds.

If the fan does not activate, then there is a fault in the power circuit.

We carry out diagnostics using a multimeter.

1. We activate the stove heater damper; if no changes occur, then the damper drive is faulty.
2. After the engine has warmed up to a temperature of 60 - 70°, turn the regulator lever to the red sector position.
3. We check the air temperature, it should correspond to degrees. Otherwise, the damper drive is faulty.
4. If necessary, repeat the procedure by moving the regulator to the blue sector position.

The design does not have the specified additional equipment

What to do about airing in the system?

1. Find a hill with a slope of at least 30%.
2. Place the Lada Granta on it with the front facing up.

3. Warm up the engine to operating temperature (approximately 85 degrees).
4. Squeeze the hoses vigorously until air leaves the system.

As a result, the car should become warmer.

They supply cold air to the heater radiator. If the air ducts are not properly sealed, cold air enters the cabin before heating. Therefore, it may be cold in the car, since some of the air flows past the radiator.

How does a stove fan work?

The main task of the fan is to take air flow from the outside and deliver it to the deflectors.

The fan is activated by a mechanical button, to which a 12 V power supply is supplied. In the Lada Granta version, the fan operates at one of three speeds. The driver selects the most optimal mode depending on the temperature inside the cabin.

Additional resistors Grants

Without resistors, the fan operates at one speed with a stable rpm. There are a total of 3 resistors installed on the board.

When the lever is moved to the first position (three resistors), the fan rotates at the first speed, the very minimum. Transfer to the second position - second speed (two resistors). Transfer to third - third speed (one resistor). The detailed diagram of the stove is shown in the photo.

Sensor that measures the temperature in the cabin

It is located in the ceiling of the Lada Kalina, close to the lighting lamp and perceives the temperature regime of the atmosphere inside the cabin. The element can also affect the operating mode of the stove. This occurs by comparing the actual temperature with the parameters set by the driver on the dashboard. Thus, the electronics adjusts the position of the dampers based on the “scanned” situation, and it seems to the driver that the stove has stopped responding to his “requests”. The reason for the disagreement is usually the banal oxidation of the contact group of the sensor, due to which it ceases to function correctly. The solution to the problem is to clean the contacts or replace the component.

We carry out diagnostics

If it is cold outside and the interior cannot warm up properly, then you need to check the operation of the cooling system, which has a direct effect on heating the interior.

To do this, you need to open the hood and, with the engine not warmed up, check where the coolant is located.

If its level in the tank is between the minimum and maximum marks, then everything is in order. But, when this level decreases, problems with the tightness of the cooling system are possible, and this leads to a decrease in pressure inside the system. If the problem is not corrected, the stove will not be able to warm the air in the cabin effectively enough.

Thermostat

This is a native Luzar thermostat

Thermostat location under the hood

You can verify the presence of this particular breakdown by the fact that the car, while stuck in traffic jams, begins to overheat very quickly. In addition, when moving along the highway at a stable speed, the engine loses its temperature too quickly, if we talk about the cold season. However, even if these “symptoms” are not observed in your car, this does not mean that the thermostat is working properly. It is quite possible that its defect lies only in tangible problems with the interior heater.

For even more complex cases, you can check the pipes that connect to the heater radiator. Normally, one should be hot and the other just slightly warm. If the second of the pipes is very cold, this will indicate that the stove radiator in your car is clogged.

And for the most extreme situations, when none of the above helps, and there is very severe frost outside, you can simply block the radiator’s air supply with any dense object, such as cardboard or plastic.

If the cooling system of the Lada Granta is working properly, then the reason for the poor operation of the stove may lie in the functioning of the air temperature regulator damper.

Blown-out air temperature regulator (either the slider or the cable with the mechanism to which the regulator transmits tension may be faulty)

The fuse box is indicated by an arrow

Also check whether the heater fan turns on. If it remains motionless, then you need to check the condition of the 30A fuse. It can be recognized by its green color and F4 index (in the picture above). It is located in the additional concentration of power fuses. It is located under the hood, near the expansion tank of the cooling system.

If everything is fine with this fuse, then most likely the problem lies in the electric fan motor itself. You can get to it only through a special hole, which will become accessible after removing the glove compartment lid.

If the fan operates at maximum speed and the air does not flow well into the cabin, then the problem is a clogged cabin filter; it needs to be cleaned, or better yet, replaced.

Resistor block

There are cases when the cooling fan is constantly running, thereby preventing the coolant temperature from reaching operating limits. In other words, the coolant that should heat the heater radiator is cold, and the radiator cannot give off heat.

This problem arises due to the fact that the first Grant models were not equipped with an engine temperature indicator, and the driver started driving with an engine that was not warmed up. This is especially noticeable when trips are short.

Troubleshooting methods

Heating the car interior directly depends on the proper functioning of the engine cooling system, since the air entering inside is heated when passing through the radiator of the Lada Granta stove. It is necessary to check the coolant level in the expansion tank: a decrease in the amount of antifreeze leads to impaired circulation and insufficient heat exchange. This result may also be due to a leak in the valve on the expansion tank plug.

Insufficient heating occurs due to a malfunction of the thermostat or pump in the engine cooling system. The cause of unsatisfactory performance is sometimes an air lock in the heating system. To eliminate it, with the engine warm, remove the heating hose from the throttle valve assembly. Then you need to create excess pressure in the expansion tank - unscrew the cap and blow into it. In this case, coolant containing air bubbles will flow from the removed hose. Similar actions must be performed with the second hose. This operation should be carried out with great care: antifreeze on a warm engine has a temperature of about 90°C, and when removing the hoses you can burn your hands.

The stove stops heating due to a malfunction of the gear motor that controls the damper that regulates the air temperature. Replacing the VAZ 2190 heater gearmotor can be done with your own hands, however, this is a rather labor-intensive procedure that requires professional experience. The part is located under the hood of the car, and to remove it you will need to dismantle the seals, frill, wiper arms and trapezoid. When replacing a nano gearmotor, it is recommended to check its performance by applying voltage to the corresponding terminals from the battery.

Important elements of the stove design are the heater radiator and the fan that supplies air to it. The heat exchanger must not be dirty, otherwise it must be replaced or repaired.

Pump impeller wear

A pump is a pump that pumps antifreeze from the engine, ensuring its continuous circulation throughout all components of the cooling system. A pump breakdown is quite difficult to miss: in this case, the engine will immediately overheat and boil.

When the impeller blades wear out due to the aggressive effects of water or low-quality antifreeze, the pump's performance drops significantly. It is still enough to ensure that the coolant somehow circulates and the engine does not overheat, but it is no longer enough to fully warm up the heater radiator.

What to do

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