Lada Granta stove: features of the heating system, malfunctions, replacement of components

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.

Lada Granta stove repair

Although there is no dispute about the quality of the supplied stove, according to laws that do not depend (or depend) on us, the stove may break. The reason for breakdowns of the Lada Granta stove may be as follows:

clogged radiator
faulty pump
loose contacts and staples
airlock

When the cause of the stove's inoperability is a pump malfunction, then you should be wary. Because this can lead to overheating of the engine and ultimately “jamming”; engine repair will be very expensive. It is better to contact specialists to solve such a problem.

Loose terminals and brackets should be tightened, this is done as follows:

1) Disconnect the battery terminals for your safety and to prevent short circuits when working with electrical wiring

2) Remove the instrument panel. we take out the radio (if you installed it), air supply or temperature regulators.

3) Disconnect the wiring harness connectors for the rear window heating switches, hazard warning lights, etc.

4) Install the loosened staples in their place

5) Reassemble everything in reverse order

Airing, or an air lock, can also cause poor operation of the stove. To solve this problem, first drain the antifreeze by first removing the throttle body hose and opening the expansion tank cap. We remove the hose supplying air from the radiator to the stove from the radiator side and blow it through. This way we eliminate the antifreeze in the stove, which was the cause of the blockage.

If the stove blows cold

In this situation, several options are possible. Air lock - antifreeze does not flow into the heater radiator. You need to touch the radiator, this can be done from the passenger seat. Just be careful, if the radiator is leaking, you can get burned.

The radiator is located under the center console to the left of the front passenger. In the gallery above there is an arrow with the location of both the radiator and the heater valve.

Judging by the reviews, many who have not yet purchased have realized that the Lada Granta has a wonderful stove. It is wonderful because it heats quickly and efficiently. The need for a stove, especially in our country with cold winters, is acute, and here VAZ engineers made the right decision.

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.

Air distributor flap

Installed to regulate the air flow coming from the fan to the glass for blowing through air ducts.

Often, deformation and bending of the plastic body under the influence of temperature leads to flow leakage and depressurization.

Temperature control flap

Regulates the supply of warm air flow from the stove heater to the car interior. The wider the damper is open, the greater the throughput of the “channel”, and vice versa, the narrower it is, the less.

Heat exchanger Grants

Its main purpose is to heat the air flow entering the cabin. The heat exchanger is connected to the power unit through two rubber pipes: supply and return for fluid circulation.

The standard location is the central part of the dashboard of the car interior.

Air temperature sensor inside the car

Structurally installed inside a plastic interior lighting lamp. To avoid overheating, the sensor is equipped with a forced airflow system.

The installation is designed so as not to distort the actual temperature readings.

Pipes

Rubber pipes
Rubber pipes literally permeated the entire cooling, stove heating, and air conditioning system. Without their help, it is impossible to connect sections of highways with each other. Fixation method: with clamps, metal ties.

Heating system control

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.

Interior ventilation and heating system of Lada Granta: checking, adjustment

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.

Diagnostics of the stove heating system

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

If the fan does not change speed, then the cause of the malfunction is in the resistors.
If the fan does not activate, then there is a fault in the power circuit.

Stove fan
We carry out diagnostics using a multimeter.

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

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.

Often, car owners do not particularly monitor the condition of their car, which can result in various problems. For example, the stove heats poorly or cold air comes out of it. Why? This means something was overlooked somewhere. But don’t be afraid, you can carry out the repairs yourself. But first you need to find the cause of the breakdown.

Check the refrigerant level

You need to start by checking the antifreeze or antifreeze. Such an inspection should be carried out as often as possible; this can save you from many problems in the future.

Attention. If a leak is discovered, you need to place a sheet of cardboard under the engine overnight, and in the morning you can determine the problem area

But keep in mind that this method only works if the leakage is severe. Otherwise, a more thorough inspection will be necessary.

Let us remind you that in the previous article we told you how to clean injector nozzles with your own hands. This procedure is especially relevant today, when the quality of fuel leaves much to be desired.

First you need to check where the leakage is possible.

1. Check how intact the expansion tank is.

Pay attention to the thermostat connections, which have three hoses carrying fluid.

3. Inspect the coolant inlet and outlet hoses to the passenger compartment opposite the engine.

4. Inspect the cooling radiator.

Attention. If the leak is small, then you can simply let the engine cool and run your fingers along the bottom of the pipe joints.

1. Tighten the clamps.

2. Replace hoses if cracks are visible.

3. Add antifreeze and check how the stove now works.

Attention. If your car is not the newest, it is better to use antifreeze as a coolant, since it is less fluid, unlike antifreeze

Blockage in the system

Often an antifreeze leak is accompanied by a “plug” in the cooling system. Then the coolant enters the radiator irregularly, causing the heater to weaken.

To solve this problem, you need to open the tank, remove the radiator cap, warm up the engine, step on the gas, and raise the speed to 3500 rpm. Then the blades will direct the liquid at a higher speed and the plug will come out.

The problem with a poorly functioning stove may lie in the thermostat. When the engine warms up, there is a damper inside it that opens at a certain temperature. When this happens, fluid flows through the radiator, cooled by the fan. Over time, the damper can deteriorate, causing the engine to overheat and the heater to blow cold air.

The thermostat is located at the bottom left of the engine. Three pipes go to it. When the arrow on the gauge reaches the red mark, touch the thermostat (with a glove). If the hose that comes from it is cold, then the damper is broken.

Attention. You can revive the thermostat using a handy method: take the key to 17 or 19 and lightly tap on the bottom

There are many channels in the radiator that can become clogged, resulting in reduced heat transfer. You can purchase a new radiator or clean the old one.

Attention. It is recommended to clean the circulation regularly every 2-3 years

The heater tap can easily jam. With the first frost the problem can be identified. In this case, the tap simply does not switch to heating mode. Here, only replacing the tap will save you.

If air does not flow from the drainage system at all, then either the damper cables have fallen off or the motor has burned out.

Video. Why doesn't the stove heat up?

Sometimes it is enough to add coolant.

Air conditioner piping

Pipelines connect all elements of the air conditioning system into a single sealed circuit. Pipelines and their mounting flanges are made of aluminum alloys. Protect metal sections of pipelines from dents and kinks. Any narrowing of the pipeline flow area leads to a decrease in system performance. To connect the moving elements of the air conditioner, the pipelines in some areas are equipped with flexible inserts (Fig. below) made of synthetic materials.

Rice. Design of the flexible insert hose: 1 - outer protective sheath; 2 — fabric cord of the load-bearing frame; 3 - plastic sealing layer; 4 - internal oil-resistant layer. O-rings made of neoprene are installed at the joints of the pipelines. When repairing an air conditioner when sections of pipelines are disconnected, the O-rings must be replaced. Tighten the threaded connections of the pipelines to the recommended torque. Weak or excessively tight tightening leads to deformation of the sealing surfaces and leakage of refrigerant. Now you have basic information about the elements used in the air conditioning system of a Lada Granta car and how to care for them. Specialized information on the method of filling the air conditioner with refrigerant and detecting leaks in the system will be discussed in other articles

Summer is coming, and that means hot days will begin, torment will begin. The feeling is especially unpleasant when you get into a car that has been parked in the sun, and HEAT comes out of there! Not a car, but some kind of sauna! In addition to this heat, the smells of plastic and other materials basking in the sun are simply exhausting. Hot seats, steering wheel - am I in hell in the flames of hell? Rather, you press on the gas so that a fresh breeze comes in and eases the suffering. Bliss. Until the first traffic light...

And nearby you can see a foreign car, from where a satisfied face is staring out, not even suspecting that there is heat all around - “Tashkent”. It’s immediately clear that this lucky guy has a working air conditioner. Are we second-class citizens? NO! After all, you can also attach this miracle machine to our VAZ-BINs, which gives freshness and coolness!

Heater fuse location

Sometimes the heater fuse may blow. Unlike most cars, the fuse box on the Daewoo Nexia is located not in the engine compartment, but in the passenger compartment. The heater fuse is red and is located in the mounting block in the instrument panel. To replace it you will need:

To the left of the steering wheel, find the fuse box niche.
Remove the cover from the block.
Using the information on the inside of the cover for each element, locate the red 10A fuse and pull it out with pliers for inspection.

The block cover contains a detailed diagram of the location of the fuses.

Table: assignment of fuses for the Daewoo Nexia

Fuse designation	Rated current, A	Purpose of fuses
F1	10	ECU (battery circuit)
F2	10	Side lights, license plate lights
F3	10	FlaflyBHafl airbag
F4	20	High beam headlights
F5	10	Left headlight (low beam) Electric drive for adjusting the direction of the light beam of the left headlight
F6	10	Right headlight (low beam) Electric drive for adjusting the direction of the light beam of the right headlight
F7	30	Electric fuel pump fuel injectors
F8	20	Turn signals, hazard warning lights, brake lights
F9	30	Windshield wiper
F10	10	Fuel filler flap drive, ABS, immobilizer
F11	10	Air conditioning compressor electromagnetic clutch activation relay
F12	30	Cooling Fan Motor (Low Speed)
F13	20	Reversing lamps, alternator circuit, instrument cluster, cigarette lighter fuse, melodic horn
Fi4	30	Horn, Cooling Fan Motor Relay (High Speed)
F15	20	Clock with display, interior light, trunk light, antenna drive motor
F16	30	Window lift motors
F17	10	Car radio (circuit from ignition switch)
F18	30	Trunk lid lock control, rear window heated timer, central door locking system, car radio (battery circuit)
F19	30	Heater fan relay

The diagram clearly demonstrates the location of car fuses

Car repair

The most voluminous section, which sets out the basic information necessary when carrying out repairs. There is an opinion that this section is largely intended for specialists from service centers that carry out repairs and maintenance of Lada Granta cars. The section contains chapters divided by vehicle components and assemblies.

First, a general diagram and fundamental description of the serviced unit or unit is given. The following provides information that allows you to independently, if you have the appropriate tools and skills, disassemble, replace, and subsequently assemble and adjust. A separate material is devoted to diagnostic issues. Studying this section can be very useful when deciding on repair methods, helping to make a preliminary estimate of costs, getting an idea of the parts to be replaced, the necessary adjustments and the equipment required for this.

Heating system of Lada Grants with and without air conditioning - differences

The design does not have the specified additional equipment

Availability of air conditioning	Absence
Separate duct
Evaporator
Heater block
Heater housing

Typical malfunctions of the Lada Granta heating system

Malfunction	Diagnostics	Remedy
The stove operates at one speed mode	Checking the board with resistors	Replacing the board with resistors
The dampers are stationary	Drive cable diagnostics	Cable lubrication, additional tension
The gauge on the dashboard shows different temperatures	Checking the sensor resistance on the contacts	Replacing the sensor
The heater does not activate when the lever is pressed	Checking the power supply circuit	Replacement of electrical wiring, fuse
The fan operation is accompanied by a creaking or metallic grinding sound.	Diagnostics of the stove heater unit	Bearing lubrication, replacement
Cold air flies out of the deflectors	Checking the integrity of the air pipes	Seal the connection with sealant
There is no coolant supply to the heater	Check the stove pipe supply diagram	Replacing pipes

Engine Features

Due to the design of the car's cooling system, the engine does not warm up above 80 degrees. The management of AvtoVAZ does not see anything wrong with this; they have an official information letter on this matter. You can read it in the material: What is the operating temperature of an 8 valve engine.

The engine design is as simple as an axe. There are no hydraulic compensators, no sores were noticed. Mostly problems can arise due to malfunctions in the engine management system.

Video of acceleration to 100 km per hour

I haven’t shot my video yet, it’s winter, so we’ll wait for the weather to warm up. That's when I'll post it on our YouTube channel. In the meantime, here's a video from Grantovodov.

Here's another interesting video. It is interesting because the measurement is made using an application with a navigator, which means that the speedometer readings are more accurate if the navigator is well calibrated. Everyone knows that the higher the speed, the more the car’s speedometer lies.

Why is it cold in Grant

Introduction

Lada Granta is a domestic car produced to this day. Granta is one of the affordable cars on the market and meets all the requirements for ensuring comfort for passengers and the driver. This car is equipped with air conditioning and climate control, although not full, but with a hint of it. With the onset of cold weather, it happens that the stove in Grant begins to blow cold air, and in order to find and eliminate the cause, you can spend a lot of effort without knowing the essence of the design and the causes of this breakdown.

This article will talk about the reasons why the stove in Grant blows cold air. After reading the article, you can easily find the cause of the breakdown and fix it.

Possible causes of failure

There are several similar reasons why the interior heater suddenly or after summer begins to work ineffectively. Below is a list of reasons:

The antifreeze level has dropped;
Cabin filter clogged;
Heater radiator clogged;
The expansion tank cap is faulty;
Thermostat jammed;
Damper jamming;

To understand each possible reason, it must be considered individually.

Antifreeze level drop

The amount of antifreeze directly affects the operation of the heater. If the level in the expansion tank drops, the cooling system may catch an air lock during circulation, which will lead to insufficient heating of the heater radiator and, consequently, to insufficient heating of the interior in cold weather.

It is necessary to check the antifreeze in the engine compartment of the car; to do this, you need to look at the expansion tank and the liquid in it should be between the MIN and MAX marks. If the level is insufficient, the coolant must be added, observing the color of the antifreeze.

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.

Heater radiator

The radiator is the heart of the stove in a car, it is it that gives off heat to heat the interior; the hotter the radiator heats up, the warmer it will be in the cabin. When the radiator becomes clogged, heat is transferred much worse due to poor fluid circulation through the system.

Radiator clog can be of two types: internal and external.

Blockage outside

Such blockage most often occurs due to the absence of a cabin filter or due to its long use without replacement. This problem can be resolved by removing and washing the radiator.

Blockage from inside

The blockage that forms from the inside is due to the accumulation of oxides formed due to the oxidation of aluminum. Also, if the antifreeze is not changed for a long time, it can deteriorate and precipitate, which will soon clog the radiator.

Check the radiator for clogging from the inside, you can assess the reliability of fluid circulation through it. To do this, you need to touch the hoses that go to the radiator; they should both be hot. If any of them are cold, the radiator is clogged and needs to be washed.

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.

Thermostat

One of the most important elements of the SOD is the thermostat. It is he who is responsible for the temperature of the coolant. A working thermostat heats the coolant to a temperature of 85°C. If it is jammed in the open position, the coolant will constantly circulate through the cooling radiator, preventing the car from warming up, which will lead to a low coolant temperature and, consequently, insufficient heating of the interior in cold weather.

The damper in modern cars is controlled both by actuator and mechanically. It happens that the damper gets stuck in the open position and directs the air flow past the radiator, which produces cold air at the outlet of the air ducts.

Signs of a broken stove

A stove breakdown always entails discomfort, especially in the cold season. The most typical signs of heater failure are frozen glass and a drop in temperature inside the cabin. Malfunctions result from:

The presence of obstruction inside the channels due to scale;
Use of low-quality antifreeze (both constant and irregular);
The presence of foreign objects in the heating system or its contamination.

The main symptoms of a radiator failure include the following:

Even when the engine is warm, cold air enters the car interior from the deflectors;
There is a clear lack of interior heating; warm air begins to flow only after a sufficiently long wait from the moment the engine is started.

To prevent possible breakdowns, experienced car owners recommend periodic inspections of the entire heating system, as well as the cooling system. Having discovered any suspicious stains or leaks, you must immediately begin carrying out repair and preventative measures. If you find damaged pipes or hoses, replace them immediately. Such inspections will insure you against possible negative consequences caused by a sudden breakdown of the heater.

Additional Tips

According to reviews of many car owners, the Lada Kalina car is recognized as one of the warmest cars of domestic production. It is very warm in the car in winter, the interior is evenly heated and the rear passengers in the car are comfortable, since the hot air from the stove is supplied to the feet of the rear passengers in full and is not “lost” in the air tunnels of the ventilation system as in cars 2109 and 2110.

If one day it became cool inside the Lada Kalina car, and instead of the usual hot air, cold air began to blow from the stove, then there was a problem in the car’s engine cooling system. Malfunction of the cooling system can cause the engine to overheat to critical temperatures and lead to serious engine damage. An air lock can cause many problems in the cooling system of a Lada Kalina car. Before removing the plug, it is first recommended to check the entire car engine cooling system (SOD), since the cause of ineffective operation of the SOD and a cold stove can be not only an air lock in the system, but also a breakdown or deformation of the pump impeller, kinks in the pipes, or incomplete opening of the thermostat . Only after checking the entire cooling system should you begin to remove the air lock.

Signs of an air lock in the engine cooling system

An air lock creates an obstacle in the cooling system, due to which antifreeze or antifreeze cannot circulate and evenly cool a running engine.

Reasons for the appearance of an air lock in the engine cooling system:

— Air may enter the system when replacing or adding coolant.

— In the engine cooling system, there is a leak in external air due to weak compression of plastic fittings, loose clamps, a leaking radiator, a leak in the pump and a faulty expansion tank cap valve. One of the signs of a plug in the ODS is the gurgling of coolant under the instrument panel when the engine warms up.

To remove the plug, you need to loosen the clamp and remove tube 3 or 22 from the heating of the throttle assembly

— The cylinder head gasket (cylinder head) was blown. As a result of the breakdown, a coolant leak is visible from under the cylinder head. Exhaust gases escape from under the cylinder head, you can see the bubbling of antifreeze, the formation of an emulsion in the expansion tank, and white steam in the car exhaust.

An air lock in the SOD can form in both the small and large circulation circles. The disadvantage of Kalina's SOD is the location of the expansion tank in a large circle. As a result, until the thermostat opens completely, it is difficult to remove the airlock. Therefore, in the cold season, “gasification” helps, as a result of which the car warms up faster, and when the engine reaches a temperature of 101-105 degrees. The thermostat opens a large circulation circle and the air exits into the expansion tank.

Block system in the electrical network

The network is powered by a battery that generates a voltage of 12 V. The device is recharged while the engine is running and directly from the generator unit. Their switching is carried out using a relay regulator, the functionality of which includes the ability to maintain a constant voltage regardless of the engine speed at the moment.

Wiring in a car electrical network involves switching all present collectors. The cables are equipped with copper cores, of which there can be several in one wire. The cores are covered in polyvinyl chloride insulation. The wire responsible for the “ground” of the LADA Granta car is connected directly to the body.

The structure of the on-board network is block-based. To ensure convenience and clarity, the manufacturer’s electrical circuit diagram is divided into the following blocks:

front part of Lada Granta;
ignition system;
dashboard;
wiring in the rear of the car.

All nodes are electrically connected.

Next, we will specify the diagram responsible for the front part. Here you can find the presence of designations for such consumers (version “Norma”):

battery;
starter;
generator unit;
front optics;
direction indicators;
horn;
fan built into the cooling system;
motor of the pump module washing the windshield;
fuses.

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.

Reviews

№	Positive
1.	Vladimir: Six months have passed since we bought the car, and there have been no breakdowns in such a short time. The fan refused to start several times, the reason turned out to be a bad fuse contact.
2.	Vasily: I have been actively using the machine for two years, there are no particular complaints, all units are working as normal. Breakdowns happen, like everyone else, but they are minor and can be easily fixed on your own.
3.	Gennady: after two months of the machine being idle, the stove heater began to supply little air. I disassembled it myself, cleaned it, works properly. My recommendations to car enthusiasts: don’t be afraid to repair them yourself.
4.	Kirill: I think that Granta is put together with high quality, the price is affordable for a family with an average income. Provided timely maintenance, no problems arise.
5.	Ivan: after buying the car, I immediately drained the factory antifreeze and bought good imported antifreeze. Now I don’t know any grief, the stove works like a charm.
6.	Dmitry: there were minor defects, I fixed them myself, but they were insignificant and did not affect the performance of the machine.
7.	Igor: I’m happy with the car, there are no major comments, as for domestic transport it’s very good.
Negative
1.	Victor: Over the two years of active use of the car, I contacted the service station several times under warranty. The fan malfunctioned, then the stove heater. Decided to renovate and sell. Renault Logan is several times better than its domestic counterpart.
2.	Vladlen: I’m dissatisfied with Grant’s purchase, I’ve already regretted wasting money several times. The car is not worth the investment.
3.	Gennady: a year and a half since purchasing the car, constant investments, purchase of consumables, repairs at service stations.

Conclusion The stove heating system of the Lada Granta is completely copied from the Lada Kalina. There are no complaints about the equipment, everything works properly. In order for the mechanism to serve for a long time, it is necessary to systematically carry out inspection and prevention.

Many motorists save on maintenance, as a result of which the service life is reduced. An important factor is the cloudiness of the antifreeze. The manufacturer recommends replacing it every 75,000 km. Exceeding the interval causes deposits to form at the bottom of the radiator and corrosion begins.

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.

Air distribution of heater/air conditioner and ventilation of LADA Granta

Fig. 1: Distribution of air flows from deflectors and air ducts of the heating (air conditioning) system and ventilation of the LADA Granta interior. The following air flow distribution elements are located in the cabin:

front door glass blower nozzles;
side air supply nozzles to the driver and passenger in the front seat or to the front door windows;
windshield blower nozzles;
central air supply nozzles to the cabin;
air ducts supplying air to the feet of passengers in the rear seat;
air ducts for supplying air to the driver's and front passenger's footwells.

The quantity, temperature, direction and intensity of air flows are controlled by switches installed in the system control unit.

The main reasons why the stove does not heat on Grant (video)

As you know, when creating the Lada Grant, engineers and mechanics borrowed ideas for the embodiment of the car not only from the body part of the Lada Kalina, but also from the technical side as well.

For example, Grant’s car with the “Standard” package is equipped with a 1.6-liter Kalina engine with a capacity of 80 horsepower. The “Norma” and “Lux” packages have a modified engine with an increased piston stroke and an output power of 90 hp.

It is worth noting that these statistics are not only in numbers; in fact, the machine performs its performance at full strength. This is a fairly powerful characteristic for the domestic Lada Grant; the engine cooling system plays a vital role here.

Elements of the Lada Granta heating system

To check the installed radiator, you need to start the car engine and turn on the stove, leaving it on for about thirty minutes (a slightly shorter period is possible). Then they turn off the engine and wait until the engine cools down, after which you need to look into the expansion tank and check the antifreeze level (normally its level should not decrease).

Heater radiator

Replacement of the Lada Granta stove is carried out in accordance with the technological regulations of the manufacturer. But experienced car enthusiasts offer their own schemes for replacing this device, which are successfully used during repair work. First, you need to clear the space under the hood of the car: unscrew the battery terminals and bolts and remove it, remove the throttle body pipes, air ducts, and remove the air filter. After this, you can drain the antifreeze from the engine cooling system.

Work in the interior begins with dismantling the decorative cover of the handbrake: you need to unscrew two screws and release the tunnel fastening on the driver and passenger sides. Now you need to remove the gas pedal by unscrewing three bolts and disconnecting the contact group. Then you should remove the brake pedal mounting pin and press on it, freeing up space for further work. To access the heater radiator, remove the plastic side cover of the dashboard. To dismantle the heat exchanger, cut the pipes in two places.

The cut-off part of the pipes should be pulled out into the engine compartment, then bend the brake pedal and pull the old radiator into the cabin. After installing the new heat exchanger, its pipes are pushed into the cabin from the engine compartment, put on the radiator pipes and securely tightened with new clamps. Further installation of the removed parts occurs in the reverse order. Then the battery is installed and coolant is added.

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

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

Installed to regulate the air flow coming from the fan to the glass for blowing through air ducts.

Often, deformation and bending of the plastic body under the influence of temperature leads to flow leakage and depressurization.

The standard location is the central part of the dashboard of the car interior.

Structurally installed inside a plastic interior lighting lamp. To avoid overheating, the sensor is equipped with a forced airflow system.

The installation is designed so as not to distort the actual temperature readings.

Pipes

comrades, please tell me what kind of stove can be installed on the MTZ82/1 so that you can work normally without sweating the glass

It was fried at 75 degrees...Aren't you making this up? The operating temperature of the engine is 96. The hand cannot tolerate even 60 degrees. At 75 you would get burns on the leg, in my opinion. On the other hand, you say that it heats better under load. I'm leaning towards overconfidence. If you haven't seen any air, it doesn't mean it's not in the system.

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First I checked the inlet and outlet pipes: both were hot. I made an appointment with an official dealer at the car showroom. I arrived, inspected the car, measured the air with instruments. When the engine temperature is 100 degrees. At the outlet of the stove the air came out at 48 degrees.

We checked it on a similar car. His engine temperature was 84 degrees, the outlet temperature was 68. The difference was 20 degrees between mine and the neighboring car. The technicians thought for a long time and decided that the heater radiator was clogged.

Work on removing and installing the radiator yourself

Let us immediately make a reservation that it is better to carry out such work not alone, but together with an assistant. It is also worth noting that there are no differences between replacing the stove radiator on a Grant with and without air conditioning.

First you need to give yourself access to unhindered implementation of this manipulation. To do this, you will need to move to the space under the hood and disconnect the 2 battery terminals. Then the fasteners holding the battery are unscrewed and it is removed out. Afterwards, the air duct pipe is dismantled and the air filter is dismantled. Now you can proceed directly to removing and replacing the radiator.

If you are going to add antifreeze after replacing the unit, drain the coolant from the system before starting work. Then move into the car interior and remove the gas pedal; this is necessary for the smooth removal of the overall radiator housing. The gas pedal is removed using a 10mm wrench, with which you unscrew the three retaining nuts, after which the contact chip with the wires should come off quite easily.

Next, you will need to work with the brake pedal, namely, remove the finger of the specified pedal and press it. In addition, to gain access to the radiator, you will need to unscrew the plastic side cover of the dashboard, which is located to the right of the gas pedal.

After gaining access to the node, proceed to sawing - perhaps the most crucial moment in the whole work. The top tube is cut first at the bend, after which it, together with the pipe, is pulled into the free space under the hood. Next, a similar procedure is performed in relation to the lower tube. After sawing is completed, press the brake pedal and pull the radiator into the passenger compartment.

Now you can begin installing the new unit, the tubes of which should first be covered with foam rubber (for their more reliable fixation). Then you will need to install the radiator in its proper place and put the pipes on the pipes located near the engine. When carrying out this manipulation, you will need outside help - one person will have to be in the car, while the other will be engaged in putting on the pipes from the engine compartment. When carrying out installation and landing, it is recommended to use a sealant, and one additional clamp is installed on each of the tubes.

After the radiator installation is completed, coolant is poured into the system, and the gas and brake pedals, battery and air filter with pipe are returned to their rightful places. Replacement completed successfully.

Heater radiator replacement cost:

Type of work	Price
Replacing the heater radiator, c/o console	from 3000 rub.
Replacing the heater radiator, with partial disassembly	from 4500 rub.
Replacing the heater radiator, dashboard	from 8000 rub.

Where to change a stove radiator in St. Petersburg:

If replacing the Lada Granta heater radiator is done in cold weather, before starting the replacement, the car must be kept warm for several hours so as not to break the plastic elements of the interior. You should not try to replace the heater core yourself. If you are not experienced, you can easily get spilled antifreeze from the pipes, which will saturate the entire floor covering. This means dismantling the interior, removing the floor and drying it.

In terms of time, replacement takes from 3 hours to 2 days.

When to replace:

— a decrease in the level of antifreeze without visible smudges; — the smell of antifreeze in the cabin; — fogging of the windshield; — the appearance of smoke or haze in the cabin; — the stove does not heat.

Which stove radiator to choose:

1. Valeo (France) 2. AVA (Netherlands) 3. Nissens (Denmark) 4. Denso (Japan)5. Termal (European Union) When purchasing a stove (heater) radiator from us, we will provide a discount on replacement.

Interior ventilation

To ventilate the interior, set the ventilation and heating control unit controls to the following positions.

Turn control knob 2 to the minimum temperature position (see Fig. 1 and 2).
Place the regulator handle 4 opposite the pictogram.
Open the nozzles on the instrument panel.
Set the desired air supply speed with switch 1.
If the windshield fogs up, set the regulator handle 4 opposite the pictogram.