The VAZ 2114 stove blows cold air, the stove heats poorly/weakly

VAZ 2114 stove blows cold air

The stove blows cold VAZ 2114, 2011. E-gas. Recently I replaced the main radiator, thermostat, changed the coolant, changed several hoses and clamps, and bled the air out of the system. All hoses are hot, both upper and lower, with no signs of airiness. The antifreeze doesn’t go anywhere, I’ve been driving for 4 days. But a problem has arisen: the car is warm, the temperature is 90, the heater in the first position blows hot air, I put it in the second position, it starts blowing cool, gradually becoming cold, I’m silent about the third position as if from the street (on the street - 30) If you keep accelerating, it starts to get warm. You eat without a stove, hot air blows from the nozzles, the dampers are adjusted, tightened. Why is this happening, where to dig? What is the reason?

• Check, if the air becomes hotter at rpm, then change the pump, there is still a possibility of an air lock, I solved it by squeezing the upper pipe - this is how the air came out. But if there is no air in the system, then only the pump.
• Well, on E-gas there is no need to blow out the air plug, because there is no heating of the throttle. Therefore, the highest point of the cooling system is at the level of the expansion tank. You just fill in the antifreeze, tighten the reservoir cap and start the car. After a minute, all the air will be released through the tank plug. This time.
• But the level of antifreeze in the tank is much higher than the location of the thermos. I've already changed the coolant many times and several times I didn't specifically run anything with my nose up. I just filled it up, warmed it up a little and drove off. There are no air pockets, there is an even stream from the return line in the tank. The system is filled with antifreeze during the first minute of engine operation. Therefore, I immediately fill in coolant 2 cm above the MAX, start the engine, the antifreeze almost immediately decreases and the level becomes 1-1.5 cm below the MAX.

REASONS FOR THE LACK OF WARM AIR IN THE VAZ 2114 INTERIOR

If you don’t know how the car works, you might think that the heater is not heating well only because of a malfunction in the heating system, but in practice there are many more reasons. Reasons for the lack of hot air in the car interior:

• The heater radiator is clogged, it may also be of poor quality;
• The heater motor in the cabin does not work;
• The heater tap is faulty, does not open completely or is completely closed. The crane drive cable may be broken (the cable of the VAZ 2114 stove);
• Air lock in the engine cooling system. The air in the system does not allow coolant to circulate normally through all pipes;
• The cylinder head gasket is broken. In this case, the engine on the VAZ 2114 heats up, antifreeze leaves the cooling radiator;
• Insufficient antifreeze level in the radiator. This problem can be solved simply - you just need to add coolant to the required level;
• The heater motor does not work. Here, too, everything is quite simple - if it does not make noise when turned on, then you need to look for the reason for the lack of heating of the interior in it. Although, the wiring going to the motor and the switch itself may be to blame;
• The heater control unit (heater switch block) is faulty. There are options here - warm air does not reach the windshield, does not blow into the legs, and there is no side airflow. The cables on the heater control may be torn (or flown off);
• The water pump (pump) in the engine cooling system does not provide the necessary circulation;
• Thermostat is faulty. The thermostat is required to maintain a certain temperature in the cooling system, but if it is constantly open, then circulation occurs in a large circle and the coolant does not heat up to operating condition.

Scheme of operation of the VAZ 2114 heater

The VAZ 2114 stove blows cold, what are the reasons?

Sometimes owners of VAZ-2114 cars have to deal with the problem of a non-working stove. In particular, such malfunctions cause problems in winter, since the car interior is not only unbearably cold, but also the windshield tends to become covered with a thin crust of ice, which significantly blocks the view. Therefore, if suddenly the stove in a VAZ-2114 stops working, you should immediately find the cause of the malfunction.

These problems can occur for a variety of reasons, ranging from worn-out cooling systems to electrical wiring problems. This article will discuss in detail all possible causes of stove malfunction, thanks to which it will be possible to find a solution to this problem.

It should be noted that symptoms of stove malfunction can be divided into two types:

1. Cold air is blowing from the stove. Sometimes barely warm.
2. The stove does not turn on at all or does not work in some individual modes.

Why does it blow cold on the windshield?

The supply of heated air in this location is regulated by a special damper. It is driven by a cable, which on a VAZ is generally stretched very often. This, in turn, leads to the fact that the damper itself does not open fully. In such a situation, air will be supplied inside the car directly from the street, that is, cold.

Understanding the principle by which heating functions in the VAZ-2114, it is generally not difficult to find out what the actual problem is. But even an experienced car enthusiast will need a lot of time to fix it. The thing is that the stove itself is located directly behind the panel located in the front of the cabin, near the steering wheel - troubleshooting requires its dismantling.

The problem with the cable is most noticeable when the temperature control is turned downward (that is, to the left).

Repairing heating in general is quite easy. You should proceed in this order:

• The cover under the steering wheel on the left is removed;
• the cable itself and its fastening are found near the gas pedal;
• the clamp is dismantled;
• the cable is tightened so that it does not sag;
• fixed with the same clamp;
• the damper control levers move (left to right all the way and vice versa);
• The tap regulator is set to maximum.

After this, the ignition is turned on and very soon fairly hot air begins to blow from the previously blocked holes. As practice shows, these manipulations help get rid of the problem in virtually all cases.

True, sometimes car owners note that despite the fact that the temperature regulator has begun to work much better than before, the air still flows warmer than hot. In addition, when you move it to the left, a cold stream sometimes escapes from the side deflectors, despite the heater being running. The problem here is that the specified regulator not only controls the faucet, but also the damper that prevents the supply of outside air.

To eliminate this mess, you will need to remove the cable of the damper mentioned above from the heating regulator. This is done as follows:

• remove the cover on the right side of the steering column;
• the regulator drive is found there (it has 2 cables);
• the one to the right is unhooked;
• the dismantled cable is tensioned so that the damper moves to the position of maximum heating of the interior;
• the resulting excess piece is cut off after fixing it in the old place, with a margin of no more than one and a half centimeters.

After this, the stove should work fully, and adjusting the temperature will be easy and comfortable.

Before we talk about why the windshield defogger does not work, let’s consider the operating principle and design of this system. Structurally, the ventilation and heating system of VAZ models of the Samara family is designed so that air enters the cabin through the cracks at the top of the dashboard, central and side nozzles, heated footwells and through the lowered door glazing. To increase the force of air flow, a fan is provided in the system.

Malfunctions of the VAZ-2114 cooling system

If the thermostat in the car does not work, the coolant that is in the system is constantly circulating in a large circle. As a result, it turns out that the liquid does not have time to heat up, so cold or slightly warm air blows from the stove. In order to solve this problem, it is enough to simply repair or replace the thermostat.

Another reason could be a simple air lock formed in the thermostat. In order to eliminate this problem, you need to remove the pipe going to the heater, and then add antifreeze to the very top. It should be noted that in this case, the liquid level in the system should not be below the maximum mark, or even a whole centimeter above it. And all because if there is not enough liquid in the system, then the stove blows cold air.

If the heater blows cold air at idle, the problem may be hidden in the pump, since it is not able to ensure normal circulation of the coolant in the system. In this case, the pump must be replaced.

Solving the problem

First of all, you need to check the heater valve. It opens and closes with a special cable. If its tension has weakened for some reason, then when you turn the lever, the faucet either does not open at all or moves literally a few millimeters. It will need to be tightened.

It is easy to check the performance of the radiator itself by warming up the power unit while the fan is not working. All you need to do is gently touch the antifreeze supply and discharge pipes with your hand.

Getting to them is easy - you just need to open the hood.

Often, over the summer, the heater valve manages to sour, as they say. Therefore, when an attempt is made to open it, the damper simply breaks off and the drive roller remains in place. Such an element will have to be completely replaced with a working one.

If the cooling fluid level is very low, this will cause the radiator to remain relatively cold. Here you will need to look for a leak and replenish the coolant volume.

If the thermostat breaks down, it needs to be replaced with a new one, and the air lock is removed by pumping antifreeze through the system.

A failure of any main element of the heating system should be suspected only when warm air stops flowing into the cabin altogether. If its supply is limited only in several directions, then most likely we are talking about local breakdowns.

Stove tap failure

Quite often, the stove of a VAZ-2114 car blows cold air due to a malfunction of the faucet. In order to get rid of this problem, you should tighten the cable, which can be easily reached from the pedal assembly. You need to have pliers on hand, which, in fact, are used to tighten the cable.

If, after doing all of the above, the stove tap still does not open, there are only two reasons left:

• the faucet is sour;
• The faucet needs replacing.

By the way, this procedure should be carried out very carefully, since the tap can easily be torn off, causing the liquid to leak directly into the car interior.

A faulty faucet is indicated by cold air blowing from the car's heater when it is turned on for heating. Another reason to replace the faucet is leakage.

If you decide to replace the faucet yourself, we present to your attention the sequence of actions:

• unscrew the drain plugs located on the engine block;
• drain all the coolant that is in the system;
• clean the studs on the faucet using an iron brush;
• wet them with WD-40. Thanks to this action, unscrewing will be much easier;
• loosen the clamps on the pipes and drain the remaining liquid;
• inside the car, unscrew the side trim, loosen the clamps on the pipes that are directed to the heater radiator;
• unscrew the nuts under the machine holding the tap;
• pull the tap out through the cabin;
• disconnect the cable leading to it;
• connect it to the new tap;
• check that all parts are assembled correctly;
• Proceed with the assembly process in reverse order.

Problem solving

Now let's talk about how to solve emerging issues, troubleshoot problems and return the heater to normal operation.

Each breakdown requires separate consideration.

Broken motor

Temperature not regulated

If the temperature of the air flows cannot be adjusted, the problem is hidden in the control unit or damper, or the temperature sensor on the ceiling inside the cabin does not work.

Be sure to check that the damper is not stuck. It can be accessed through the engine compartment. If replacement is necessary, replace the standard plastic damper with an aluminum product. It is more durable.

Blowing cold

If the heater on your VAZ 2110 starts blowing cold air, you need to look for the reasons. The cause of the failure lies in the gear motor. A similar situation occurs in 9 out of 10 cases, so it is unlikely that you will have to look for alternative culprits.

Air flows with a broken damper

The gearmotor needs to be replaced. This is done as follows:

• Wipers are removed;
• The frill is dismantled;
• Unscrew the three screws that hold the gearmotor;
• The wiring is disconnected;
• A new one is installed in place of the failed device. Ask your assistant to switch the position modes of the regulator, and at this moment you will mount the gearmotor;
• The frill and wipers are returned to their place. Work is done.

But there is 1 case out of 10 that will force you to change the heater due to wear and tear of the old one. As the practice of VAZ 2110 owners shows, the heater from 2112 is best suited for replacement. Moreover, you can choose between two stove options - 2112-01 or 2112-02. The first one does not have an air filter, while the second option has one.

The windows fog up, the feet are not heated

It is not uncommon for VAZ models to have a problem when air flows normally from the stove, but it does not heat the feet and does not flow onto the windows.

Modification of air ducts

It would not be superfluous to install a pre-start heater. Due to it, the interior warms up faster.

Coolant leaks

The stove may not heat up due to the fact that the level of coolant, that is, coolant, decreases. Do not rush to add antifreeze to the tank. First, be sure to check for signs of leakage in the pipes and connections.

Problems with the stove on a VAZ 2110

The heater is very noisy

Many owners of the domestic “ten” are faced with a situation where a working stove makes a lot of noise. In this case, everything works fine, air flows spread throughout the cabin in the same way as the regulators are set.

Relays and fuses

A blown fuse is one of the most common stove malfunctions in a VAZ-2114. This reason is extremely simple, since it can be eliminated by every person who does not have the slightest idea about the structure of a car. However, this reason is also very unpleasant, since it is, firstly, necessary to establish the reason why the fuse blew, and secondly, not so easy. Typically, a blown fuse indicates a problem with the vehicle's electrical wiring.

Heater motor VAZ-2114

It is best to start looking for problems in the operation of cars of the Lada Samara family by checking the heater motor. To do this, you need to start the engine. Then the operation of the motor in each position is checked on the stove control unit. Next, they determine by ear whether the mechanism is working. If it changes speed, the stove starts blowing cold air; the VAZ-2114 has a working motor. You can talk about its malfunction if it shows no signs of life.

If the mechanism operates at the maximum possible speed in the third position, then the problem is a faulty resistor. If the motor burns out, it must be replaced. It cannot be repaired.

Problem with switches

In order to check the serviceability of the stove switches, you need to acquire the simplest light bulb, 12 volts, with two wires. Next, remove the central part of the dashboard and perform the following steps:

• turn on the car ignition;
• connect the negative contact from the light bulb to ground with a wire;
• The positive contact is alternately connected to outputs 1-2-3 on an additional resistor.

If the light comes on during this procedure, this indicates that the switch is working. But if the light does not light up, most likely the fuse has blown or the circuit has broken.

Stove motor failure

Of course, the stove motor, like, in fact, any other electrical part of the VAZ-2114, can burn out over time. However, before deciding to replace it, it is necessary to check the functionality of all fuses, the temperature mode switch, and the ignition relay. If all the above parts are in order, then the problem is still in the motor.

To replace it, you must first disassemble and then remove the entire dashboard, turn off the heater valve, and also drain the antifreeze or antifreeze. Next, we remove all the pipes, take out the old motor, and install a new one in its place. Once the functionality of the new heater has been verified, the system can be refilled with the fluid that was drained at the beginning of this process.

Components of the heating system on the VAZ 2114

The heating system on all VAZ 2114 car models consists of the following elements:

• water-reflective shield;
• heating nozzle complete with air ducts intended for the windshield;
• deflector;
• heater with a small electric motor;
• nozzle for interior ventilation;
• stove tap seal;
• rear heater pipe;
• supply tube.

In the VAZ 2114, the heating system is located in the torpedo part of the car. The operating principle is based on the transfer of heat from a liquid that is supplied to the stove radiator. Heating up to almost 100 degrees, the liquid heats the air, which is supplied by a fan into the car interior and, in turn, heats it.

What to do if there is cold air in the VAZ 2114 stove?

The cold air of the stove 2114 creates many problems. The VAZ is a car loved by many, but it also often has problems.

The task of the stove in the cabin of any car is to create a warm climate. A car heater is not a very complicated device, and the heat is supplied by the engine. The pump sends antifreeze through the heating and cooling systems, the hot antifreeze enters the stove radiator, and the fan at this time passes already heated air. That's why it gets warm in the cabin. The antifreeze then returns to the engine.

If the stove in a VAZ 2114 produces cold air when the mode is on, an urgent inspection of the entire car is necessary, otherwise a seemingly minor breakdown can lead to serious repairs.

Most often, the reason lies in the cylinder head gasket.

If it was pierced, then even by eye you can determine whether this is so. This will become clear if you make sure that in the expansion tank:

• air bubbles enter;
• An excessive amount of antifreeze enters, and it does not decrease (this is the reason for the instantaneous heating of the engine even at idle speed).

A hole in the gasket indicates that the thermostat needs to be checked, and there is a possibility that the operation of the large cooling circle is disrupted.

Most often, the gasket is damaged, burning out in the place between the cylinder and the cooling, then:

• antifreeze may get into the camera;
• gases into the cooling system.

If cooled air is blowing, there is a fear that the heating system hoses could not withstand the load while driving. When the engine got too hot, they burst, followed by the cylinder head gasket.

A pump malfunction can also cause the stove to supply air that is far from warm. But that's not what's dangerous. Such a breakdown entails a malfunction of the cylinder head.

Because of this, the engine may overheat so much that the engine cannot withstand it, and it will face major repairs.

Driving on dusty, polluted roads adds to the damage to cars. The radiator is the first to suffer. It may be partially or even completely blocked from road dust. The air, which according to all the rules should pass through the grille, will in this case look for more optimal paths and blow around the edges of the radiator, and the stove, accordingly, will not please the driver with warm air.

Why does the stove not work on a VAZ 2114 car?

Unfortunately, the heating system of the domestic automobile industry still leaves much to be desired.
This issue is especially relevant in winter. After all, being cold is not only unpleasant, but harmful, even dangerous to health. And here we are not only talking about the driver’s hypothermia, everything is clear about this. Glasses with a faulty heating system quickly freeze and become covered with frost and ice. Visibility on the road for the driver in such conditions is negligible. To find out why the stove on a VAZ 2114 does not work, you first need to understand how the stove on a VAZ 2114 works.

Heating in the interior of the VAZ 2114 is arranged according to the classic principle of the line of Samara cars.