The heater damper of the VAZ 2114 is broken

I've seen a lot of how the stove tap is adjusted. So I finally did it myself. The procedure is very simple, and the effect is truly amazing. Yesterday I drove about 120 km, opened the windows several times. The only negative is that my panel got very hot. I think that in frosty weather the windows will thaw faster now.

On the driver's side, remove the panel cover. A little higher under the steering wheel, not immediately noticeable, the cable is attached to the heater tap. It needs to be shortened. I shortened it literally by 0.5 cm, making one more turn.

By pulling cable No. 20 (damper adjustment), I ensured that hot air entered all the side air ducts. After some time, having adjusted the length of cable No. 21 (adjusting the heater tap), I received hot air already at an engine temperature of up to 60 degrees.

Usually, newbies who have driven (or just started driving) a VAZ 2114 for the first winter season turn to car service centers with this question. The fact is that the car has such an unpleasant feature (here we say hello to the engineers of the Volga Automobile Plant), such as a problem with the operation of the stove. Moreover, for some it appeared in the very first winter after purchasing a new car at a car dealership.

Repair work

Knowing the structure of the stove, it is easy to repair. Before starting repairs, it is necessary to remove the wire from ground and drain the coolant.

Repair consists of the following steps:

First you need to remove the instrument panel and carefully disconnect the air pipe through which air enters the cabin.

Next, you should check the electrical system: resistor wires, electric motor, fan. In addition, you need to check the outlet and inlet hoses of the faucet.

Next, you should unscrew the two nuts from the shield that secure the faucet.
Then you need to remove the seal from the tap pipes.
Next, the nuts are unscrewed, with which the stove is attached to the body.
Now you can remove the stove.
Having completed the necessary repairs and adjustments, the heater is reinstalled in the reverse order.

After repairs, you should check the operation of the heating system. It should turn on as soon as the engine starts.

Heater repair at VAZ

Assembly of the unit

Interchangeability of gearmotors
When work on restoring the functionality of the MMR is completed, install it in place. For this:

Insert the pin of the micromotor-reducer lever into the slot of the lever. It is located on the damper drive;

If the lever is not turned properly, apply 12V voltage to the motor connector pins using two wires. We are talking about yellow wires here. This way you can return the lever to the correct position;

Having installed the micromotor-reducer, check it for operability, plus watch how the damper drive of your heater moves, whether the heater control lever “plows” properly to regulate the temperature.

We will repair or replace the damper and heater drive, you will be able to return the heater to its previous functionality and independently determine what temperature regime will be set inside the cabin of your VAZ 2110.

Replacement instructions

The radiator is a replaceable unit, so if it is faulty, it needs to be replaced.

The replacement procedure consists of the following steps:

First of all, you need to drain the coolant.
Next you need to dismantle the dashboard. You can remove not the entire tidy, but only part of it to get to the radiator. How to remove the panel is described in the operating instructions.
Before replacing, it is necessary to disconnect all wires and hoses that go to the radiator.
Then you need to unscrew the fasteners and dismantle the unit.
The removed radiator must be cleaned if it is clogged. If it leaks, it needs to be changed. Assembly should be carried out in the reverse order (video author - VChSLV).

After the repair, the microclimate in the cabin will be restored and no frost will be scary.

Basic aspects of tuning

Car tuning is not only about illuminating the dashboard with LEDs. Tuning the VAZ 2114 stove is required in situations where cold air blows from the sides of the stove, or the interior is heated unevenly.

To do this, you need to remove the side cover on the gas pedal side. The clamps holding the throttle cable should be loosened. Then you need to pull it back and tighten the clamp. Next, you should install the damper control levers. From this moment on, warm side air should blow, warming the driver and passengers in the cabin.

Heating system repair

At the second stage of tuning, it is necessary to ensure that air coming from outside passes through the heater. The operation of the damper and the tap is carried out by the operation of one engine. It should be ensured that it does not control the damper. To do this, the right cover of the torpedo is removed, and then the one located on the right is disconnected and pulled from the two temperature control cables from the engine. The damper should be in its maximum position. The cable should be tightened and the excess should be trimmed.

Modification of the pipe is required if the air flow from the left deflector is too weak. It needs to be forcibly strengthened. To do this, you need to install a fan with a diameter of about 50 mm in the pipe. You can use a computer fan. First you need to remove the deflector. Then, having made a hole of the appropriate size, insert the cooler and seal it. Next, the pipe with the cooler needs to be returned to its place and the power supply restored.

You can connect the fan directly to the heater contacts. However, in this case, in order for it to work, you need to turn on the ignition.

If you properly modify the stove, it will work more efficiently. This will improve the comfortable conditions in the cabin of any car, both VAZ 2114 and UAZ. LED lighting will give the panel a beautiful appearance, especially at night.

Heater maintenance

To ensure that the VAZ-2114 heater heats well in winter, carry out maintenance of the heater before the cold weather:

Remove it from the car.
Disassemble and clean.
Check the functionality of the dampers, seal their ends with sealants.
Seal the joints with sealant.
Flush the radiator.
After assembly, adjust the drive cables so that when moving the sliders, the valves and the tap become in their extreme positions.

These measures are enough for the heating system to function normally in winter, providing warmth to the car interior.

Finally, we note that the reasons for the poor operation of the stove were discussed above, but it still continues to function. But this unit also has breakdowns and then the stove fails and stops working completely. Such reasons include breakdown of the radiator, leaks at the joints of the pipes, fan malfunction (open circuit, exhausted motor life or burnout).

Source: avtocity365.ru

VAZ 2114 stove damper diagram

Hello everyone, having bought a car in winter, I noticed that hot air comes from the central air ducts, and cold air comes from the side ducts and onto the forehead. I decided to conquer this.

1. The easiest way: remove the left side cover of the torpedo, in the area of the gas pedal we see the damper rod cable and the cable fastening clamp, unfasten the clamp, pull the cable down, secure the clamp, set the heater flap control levers left - all the way to the right, right all the way to the left , turn the heater tap control lever all the way to the right and we feel that warm air is coming out of the side holes and onto the windshield.

2. What we did helps, but not 100%. It is now possible to regulate the temperature better, but within a small range. All the same, when the engine moves to the left, at some point cold air begins to blow from the side holes. This happens because this engine controls not only the heater valve, but at the same time also the damper, which allows access to outside cold air and it enters the cabin past the heater. To get rid of this, you need to disconnect the damper control cable from the engine. To do this: remove the right side cover of the torpedo in the area of the passenger's left leg, find the temperature control engine and see that two cables go to it. We disconnect the cable from the engine, which is located to the right in the direction of travel, stretch it so that the damper is in the position of the highest heating of the heater, bend it in the area where the cable is attached so that the damper always remains in the same position, bite it off, leaving about 1.5 cm so that the excess the length did not interfere with the movement of the engine. And, EVERYTHING! Now warm air blows into all openings, and the temperature is smoothly adjusted from maximum to minimum values.

I’m also attaching a video on an alternative solution to method 1!

The reasons for the malfunction of the stove on the VAZ 2114 can be very diverse. Almost every car enthusiast has problems with the VAZ 2114 stove, oddly enough, when cold weather approaches, the air temperature drops and the time spent warming up the car increases. Many car owners do not wait for problems to arise, but prepare their car for the winter in advance, in particular this applies to checking the working condition of the stove.

Reasons for decreased performance

Despite the simplicity of the design, problems with the VAZ-2114 stove often arise. They are mainly associated with a drop in the performance of the heating system - the stove heats the air poorly, blows cold or slightly warm air. In this case, the reasons for poor operation of the stove can be both general (warming up is weak at any control unit settings) and when operating in a certain mode, for example, at idle. Or, for example, cold air or slightly warm air blows only on the side windows, and in other modes the heating works normally.

Common reasons why the stove stops heating:

the heater radiator is clogged or an air lock has formed in it;
when switched to heating mode, the heater damper does not fit tightly to the body, which is why part of the air flow moves bypassing the radiator and enters the cabin cold;
the tap does not open completely - this is one of the main reasons for a poorly heating stove;
the formation of cracks at the joints of the housing and air ducts, which causes strong dispersion of the air flow.

It is not difficult to determine the cause of a general decrease in the efficiency of the heating system. To find out why the VAZ-2114 stove does not heat well, you need to remove the side decorative panels from the center console, and then warm up the engine and turn on the stove at maximum power. After this, we try the antifreeze supply pipe to the heater radiator up to the tap and behind it. The same heating temperature of the tube on both sides indicates that the tap is working properly and the problem lies in the radiator. If after the tap the pipe is less warmed up, the tap is jammed or does not open completely.

After this, we determine the temperature at the inlet and outlet pipes of the radiator. If the heat exchanger is not clogged and there is no plug in it, then the temperature of the outlet pipe will be lower than the inlet pipe. But if the outlet tube is cold, antifreeze does not circulate through the radiator, which indicates the formation of an air lock (airing) or clogging.

A common cause of failure of the VAZ-2114 stove is wear and play in the sliders. Because of this, even when they are moved to their extreme positions, the cables do not bring the valve and dampers to the stop (the valve remains closed, and the dampers do not block the air flow channels). This problem can be easily resolved - you need to make an adjustment and shorten the cables a little.

Causes of malfunction of the VAZ 2114 stove

The heater on a VAZ 2114 is leaking. In this situation, it is cheaper and easier to purchase a new radiator. Despite the fact that the hole may be small in size, the radiator will no longer be able to fully perform its functionality and fully comply with the presented characteristics. Of course, if you seek qualified help from a specialized service, the malfunction will certainly be eliminated, but this is not a solution to the problem, because a short period of time will pass and the defect will reappear, given that the amount of repair is not so small.
The VAZ 2114 radiator is clogged. In this situation, there is a chance to give the radiator a new life if proper repairs are carried out. But before repairing it, it must be removed. Cleaning can be done using KARCHER or by blowing with compressed air. But this process must be carried out very carefully, because... The radiator may not withstand high pressure and will simply break as a result. And then you will definitely have to buy a new one to replace it.
Motor failure. This problem occurs as a result of a damaged fuse. Solving this problem is quite easy; a failed fuse simply needs to be replaced. But perhaps this is not enough to solve this problem. The question arises, why did the fuse blow? Most likely, a short circuit has occurred in the wiring; to prevent a repeat situation, the best solution would be to “ring” the entire circuit to identify the system flaw and then eliminate it. Otherwise, if things go badly, a short circuit may occur, with negative consequences.

Node malfunctions

There are three faults in the valve of the VAZ-2114 stove, but if they occur, the unit must be replaced, since it cannot be repaired.

Crane breakdowns:

Incomplete opening/closing of the channel. It occurs due to wear at the junction of the axle and the shut-off valve. As a result, a significant backlash appears, due to which, even when the valve lever is moved to the extreme position, the damper does not open the channel completely. This malfunction negatively affects the performance of the stove.
Gate valve jammed. This happens because the tap has not been used for a long time and the moving element has become stuck and does not move. Attempts to open with force result in the rupture of the connection between the axle and the valve or the formation of strong backlash, which causes the valve to also become inoperable.
Loss of tightness. The tightness of the unit is ensured by seals on the damper axis. If these elements are worn out or damaged, the liquid flows out through the mounting hole of the axle. This malfunction does not affect the performance of the stove, but antifreeze leaks will appear in the interior.

The first two faults can only be identified visually by removing the valve from the car. As for the loss of tightness, a symptom of a breakdown will be traces of antifreeze on the floor mat in the cabin. And since a leak can occur due to leaks at the junction of the pipes with the heater elements, when leaks appear, first of all, find the location of the leak. If the faucet leaks, there will be traces of antifreeze on the body.

Tips for choosing a radiator

Let's look at the main nuances when choosing a stove for a VAZ 2114. As you know, the factory-produced VAZ 2114 heater device has a high level of required heat transfer. But the required model is simply not available for free sale; in this case, we purchase what is available. Naturally, the characteristics of a used radiator are absolutely no good, the reason is obvious, in a couple of months you will have to change the radiator again, in a word, you will be throwing money down the drain. In this situation, a better solution would be to overpay a little and purchase a new device.

Based on consumer reviews, radiators from the manufacturer DAAZ are in great demand, because The quality indicators of the produced models are met, the heat transfer parameters are also at their best. As for the material from which the VAZ 2114 stove is made, it is impossible to confidently determine the leader among aluminum or copper radiators. Each has advantageous indicators and certain disadvantages, such as heat transfer characteristics and operating life.

Video “Reconstruction of the VAZ heating system”

This video explains how to make the cabin warmer and therefore more comfortable (the author of the video is Alex ZW).

The stove installed on the VAZ-2114 copes with its functions relatively well. But she has weaknesses. One of them is dampers. In a car, the position of the dampers is adjusted by three cables. Over time, they lose their properties, stretch or loosen their tension. If the heating system is not adjusted, then hot air will only flow through the central air ducts. And the passenger and windshield will remain without heat and heating. In this case, it is important to figure out how to close the heater dampers on a VAZ-2114 and adjust them.

VAZ 2114 stove diagram

The diagram clearly shows the structure of the VAZ 2114 stove:

number 44 is the ventilation motor, 45 is the additional resistance resistor, 46 is the toggle switch for switching speeds. This diagram makes it clear how the VAZ 2114 heater works.

VAZ 2114 stove diagram

To diagnose the performance of the VAZ stove, you must apply the following steps:

We turn on the VAZ 2114 heater with switch (1) to the 1st, then 2nd and 3rd speed modes. Lever (2) and (4) adjust the desired air direction, and the last one (4) has the function of selecting the air temperature. It also happens that even some people do not know how to turn on the heater on a VAZ 2114.

VAZ 2114 stove diagram

If there are no signs of operation, therefore, the fan does not turn on at all. But if the radiator shows signs of operation at some speeds, therefore, the reason is not a fan malfunction, but possibly a resistor (additional), or the VAZ 2114 interior heater does not respond to the switch. If the fan is running at full power and the temperature is set to the maximum when the engine is fully warmed up, and cold air comes from the air duct. This is likely the cause of a clogged heater radiator.

Adjustment

Drivers solve this problem at the same time as replacing the radiator in order to combine the work. Or you can do without replacing the radiator if everything is fine with it. But it is imperative to check the screening devices for leaks. If the seal is broken, glue them with foam rubber or other insulation. Leaks will lead to cold air mixing with hot air, which will prevent the stove from working properly.

To adjust the device, you need to work on the faucet and the valve itself. It's better to start with the faucet.

Remove the panel under which the device you need is located. It is not necessary to remove the dashboard, but for clarity it is possible. Plus, this will allow you to modify the cut-off device itself, glue it with foam rubber or other insulation. Basically you need a cable that responds to the cutoff. You will find it under the side dashboard cover near the gas pedal. On the body of the faucet itself there is a bracket that holds the cable sheath on itself. It needs to be removed.
Remove the cable from the lever, after which you need to open the tap in the maximum open position.
Now the cable can be disconnected from the lever block. You don't need the old cable, so throw it away. Close the faucet as needed.
Adjust the length of the sheath and the cable itself. In this case, on the lever block, with the lever in the right position, the tap should be completely open.
With the help of a latch, the cable is securely fixed in its place.

Important! The heater may not operate efficiently if the damper is not functioning properly. It is not always possible to tighten and adjust it. If an element wears out or fails, the only method of repair is replacement.

Now we move on to adjusting the damper on the VAZ-2114 stove.

Remove the bracket that holds the cable sheath on the VAZ-2114 heater body.
On the left there is a yellow lever made of galvanized steel. There is only one there, but you may have to grope for it manually.
Pull this lever towards you, towards the interior of the car. In this position it is considered as open as possible.
The cable needs to be tightened and its length adjusted. The adjustment is considered correct when, in the right position of the long lever located on the lever block, the device being adjusted is in the maximum open position.
Don't rush to close the panel. After adjusting the position of the cable, be sure to securely fix it.

If the cold air cut-off works correctly, then your heating system will begin to effectively heat the interior and provide hot air to all heating points.

Important! Do not forget that on the VAZ-2114 in its heating system one lever is designed to simultaneously control two dampers - a faucet and a large damper.

Before doing this, check whether all elements of the heating system on your VAZ-2114 are working correctly. Sometimes the reasons turn out to be much more serious, so you have to do more major repairs or send the car to a car service center. In any case, a consultation is never superfluous.

Share your impressions of the operation of your own stove and tell us what problems you encountered. Don't forget to leave comments. Let's discuss pressing issues together.

Source: remam.ru

How to carry out work to replace the VAZ 2114 stove (radiator replacement)

The heating of the VAZ 2114 is replaced as follows, first you need to drain the cooling liquid from the system, only after this simple manipulation is the panel (instrument) removed in order to easily get to the radiator. To save operating time, it is possible to detach only part of the panel, in the area of the glove compartment and console. It is better to carry out this procedure together, so that one person pulls the panel as necessary, and the second removes the radiator. But there is another method: remove the panel fastenings from both sides, and then carry out the procedure of loosening the brackets. As a result, you can easily replace the VAZ 2114 stove with a new one. But do not forget to disconnect the wires first. The next step will be to remove the nuts that secure the radiator to the body, and further loosen the clamps that secure the pipes. That's all, further replacement is carried out in the reverse order.

How does it work

The principle of operation of the system is quite simple. It is based on the transfer of heat from a liquid. So, the heater radiator is connected to the main terminals of the engine cooling system. Inside the heat exchanger there is antifreeze or antifreeze. So, when the engine heats up, hot liquid flows in a “large” circle to the heater radiator. When the ACS (control unit) is turned on, the heater motor is activated. Warm air begins to move through the nozzles. The direction can be different - on the windshield, side, in the center of the cabin. One or more deflectors are activated, depending on the position of the stove lever.

That is, heat exchange occurs - hot antifreeze is cooled not only in the main radiator (which stands in front of the engine and is shown in the photo below), but also in the heat exchanger of the heating system.

Repair of VAZ 2114 stove

To repair the stove, it is necessary to remove it and then make the necessary adjustments.

VAZ 2114 stove diagram

Before removing the heater (1), be sure to remove the wire going to ground, and the coolant must be drained in advance.
Carefully remove the dashboard, and with careful movements disconnect the air duct (19) through which air enters the car interior.
The next step of the work will be to conduct an audit of the electrical system: checking the wires of the resistor (18), fan, electric motor (2), hoses of the outlet valve (13 and inlet valve (12).
On the shield, 2 nuts securing the tap are removed in sequence.
Carefully remove the seal from the tap pipes.
The nuts securing the stove to the body are removed.
As a result, the heater can be removed.
After making the necessary adjustments, installation is carried out using the same method but in reverse order.

But first, check

However, before you start disassembling the stove and making technological changes to its operation, find out that other components of the system are working correctly. Improvements will not yield results if the problems lie elsewhere.

Make sure the pump is working properly. Breaking off the impeller impairs heat transfer. If the car begins to overheat frequently in the summer, and the heater does not work well in winter, this may indicate this problem.
Make sure the thermostat is working properly. If it is stuck closed, the stove does not heat up at all. Antifreeze does not go into a large circle. If it is stuck open, the car (and with it the stove) heats up very slowly, the air comes out only slightly warm.
Make sure the stove fan is working. It should work in all speed modes.
Make sure your cabin filter is not clogged. Where is it? This is probably your problem. Open the hood, you will find it in the part between the engine compartment and the passenger compartment, approximately in the center.
Make sure your heater core is not clogged. It is recommended to wash it periodically (every 2-3 years) using special products.

Changing the cabin filter of a VAZ 2114

The air inside the cabin without using a filter will be filled with road dust and exhaust gases; it is clear that this will negatively affect the health of the driver and passengers. The immediate function of a car filter is to purify the air entering the cabin. As a result, it is susceptible to rapid contamination, and there is absolutely no benefit from such a filter. It only makes it difficult for air to get to the heater. For this reason, the filter must be replaced. This procedure is available for DIY replacement. First, dismantle the brush holders and the windshield wiper system, then remove the grille (plastic). After this, the nuts securing the plastic cover are removed, resulting in a small hole being freed. The filter is not attached to anything, so there should not be any problems in removing it, and replace it with a new one in the same way. All parts are mounted in place.

Stove design and diagram

The heating system for the interior of a VAZ 2114 car, both with an injector and a carburetor, is a heater that is connected to the engine. The coolant is coolant, which heats up as it passes through the power unit. The heater's task is to distribute the resulting heat evenly throughout the cabin.

Heater diagram VAZ 2114

After passing through the engine cooling system, the heated antifreeze enters the heater radiator. A fan blows on a hot radiator. Thus, warm air enters the car interior. With the help of deflectors and dampers, the direction and intensity of the air flow is regulated. The stove on the VAZ 2114 can operate in several heating modes.

The first “jamb”: the stove tap

The first problem area of the VAZ 2114 is the valve at the antifreeze inlet into the stove. On the one hand, its undoubted advantage is that if you accidentally break off the fitting on which the pipe is placed, it is enough to replace the tap. For example, on most foreign cars produced in the 90s, these fittings are an integral part of the heater radiator. If they are broken during repairs, you will have to replace the entire radiator. But on the other hand, due to this design, the quality of coolant circulation is much worse. And that means comfort from being in the cabin.

In addition, the supply of hot antifreeze for the stove is controlled mechanically on the VAZ 2114 using a cable. And this cable becomes dirty and “pulled out”. The fastening of this cable itself may weaken over time. As a result, the stove will not work properly.

Usually, if problems arise with cold air from the stove, it is recommended to tighten the cable.

Adjusting the heater tap cable

The problem arises due to the general unreliability of the mechanical cable system for controlling the interior heating controls on the VAZ 2114. We have already talked about this. Loosening or pulling the cable over time leads to the fact that the stove tap no longer closes (opens) completely when moving the slider on the control panel. To solve this problem, you need:

Find the control cable for the stove tap. It runs under the panel near the gas pedal.
Pull the cable so that when the damper is fully open, it also opens fully. Sometimes, with a strong stretch, the cable is shortened a little for this purpose. Do not overdo it, otherwise the tap will not close. Warm air will continue to blow in summer.

This basically works. But it may happen that you have to tighten it regularly. Often the problem returns periodically. The fundamental measure to solve it is the following method: removing the tap from the system.

Removing the stove tap

This modernization allows you to exclude an “extra” element from the system, improving the overall efficiency of the system (by improving circulation) of the VAZ 2114.

The operating procedure is as follows:

Remove tap.
Make (you can’t do without a lathe) a tube of the required shape, connect the pipes to it.
To improve circulation, a pressure pump is additionally installed in the system (this is standardly installed on GAZelle, you can find it in GAZ spare parts stores). The pump runs on electricity. We recommend turning on power to it through a switch installed in the cabin in order to be able to forcibly turn on the pump if necessary.

We recommend using this tuning method only in regions with cold winters (where the temperature is around -20 degrees Celsius or lower for more than one and a half months a year). In all other regions, a standard stove should be enough!