Replacing the fan (motor) of the stove on a VAZ 2114 with your own hands


The main thing for passengers is that the car is warm and comfortable. These conditions can be created by the stove provided in the car mechanism. It will not allow passengers to freeze even in severe cold. The operating principle of the heating system in the VAZ is identical. The car and the interior of her car are heated using a stove. The stove operates with the help of a fan, which is located in the interior of the cabin. The fan is capable of operating in three-speed mode.

Equipment operation mechanism


The fan regulates the flow of air that will circulate inside the car.
It has several damper positions, which can be directed towards heating the feet, glass or the passenger part of the cabin. If the system does not work properly and is noisy, the heating process of the VAZ 2114 is reduced to zero. Warm air does not enter the cabin, as a result of which the car remains cold. This problem is especially noticeable in the cold season. In order to understand the reasons, you need to know how the operating mechanism of the heating system works:

  1. 1. To supply heat to the interior of the car, it is necessary to adjust the supply of thermal air by closing and opening the tap.
  2. 2. Through these actions, coolant enters the radiator, which contributes to the formation of heat. The stove operates at the maximum coolant level with a fully heated motor, which is about one hundred degrees.
  3. 3. When the stove switches to different speed modes, the fan speed is regulated.
  4. 4. In the car interior there are special partitions with the help of which you can determine the main root causes of failure of the VAZ 2114 stove.

In case of malfunctions, the cause should be sought in the following:

  • The fuse has failed;

The most pressing reason. A faulty fuse does not work properly, which can be the main reason for the breakdown of the entire heating system of the vehicle. Often the cause of a blown fuse is a short circuit. To determine this deficiency, you will have to fully understand the operation of the safety chain.

  • Poor contact in the inside of the mounting block;


Poor contact of the mounting block

The main cause of this malfunction is considered to be oxidized wiring. There is a solution to the problem: just reconsider the wires connected in front of the mounting block and replacement may be required.

  • The ignition relay has failed;

Occurs as a result of a stuck ignition relay. The trouble is revealed simply. In this case, the fan does not work properly and is noisy; its effectiveness is expressed only when the engine is fully warmed up. To eliminate this failure, it is necessary to replace the relay.

  • Inoperability of the stove speed modes;

It is detected when the fan is operating at maximum mode, which makes noise. In this case, it is necessary to evaluate the performance of the heating resistor. If it becomes unusable, replacement will help. This is the design of the heating system. In modes 1-2, the equipment operates using an additional resistor, and only mode 3 is switched on directly from the battery.

Messages 13

1 Topic by Koldun 2009-02-03 09:43:16

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Topic: Silent heater motor

Actually, I’m wondering if it’s possible to install some kind of motor to make it less noisy? Or install a fan yourself with a larger diameter, but with a lower rotation speed..

2 Reply from Dj_Spacer 2009-02-03 13:12:02

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Re: Silent heater motor

In appearance, the engine from the Opel Vecta stove is more or less suitable, of course you will have to farm a little, but you can put it in

3 Reply from Stasyuk 2009-02-08 18:03:35

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Re: Silent heater motor

You can try to use a computer cooler.

4 Reply from AltChrome 2009-02-10 10:47:42

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Re: Silent heater motor

You can try to use a computer cooler.

You should also put it on the inlet so that it blows.

5 Reply from ZenD 2009-02-10 12:12:33 (2009-02-10 12:16:21 edited by ZenD)

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Re: Silent heater motor

Actually, I’m wondering if it’s possible to install some kind of motor to make it less noisy? Or install a fan yourself with a larger diameter, but with a lower rotation speed..

I think you can modify the standard motor

or improve the sound insulation of this very motor

6 Reply from XelleX 2009-05-04 06:28:58

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Re: Silent heater motor

don't beat yourself up. Turn up the music louder, and good luck, kill the suspension.

7 Reply from salavinka 2009-05-04 08:08:27

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Re: Silent heater motor

Well, I don’t know where it’s much quieter for our cars, for comparison, try listening to the stove on a classic, in comparison with it, the “eighth” is just quiet and quiet, at first or second speed you can hardly hear it anyway, Tashkent in the winter in the cabin, but on I only turned on speed 3 once or twice, just for fun.

8 Reply from Kolyan 2009-06-08 22:10:09

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Re: Silent heater motor

It is noisy on the classic, but it blows well. I am for replacing the motor and fan. Samara has a blunt (cylindrical shape) Nada like a table fan with 3 blades.

9 Reply from Dj_Spacer 2009-06-09 04:49:52

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Re: Silent heater motor

It is noisy on the classic, but it blows well. I am for replacing the motor and fan. Samara has a blunt (cylindrical shape) Nada like a table fan with 3 blades.

I don’t want to upset you, but it looks exactly the same on foreign cars. The point is not in the design as a whole, but in the design of the blades.

10 Reply from ZipeR 2009-06-09 11:50:17

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Re: Silent heater motor

And what blows on the classics is a question! I set a new stove motor for a friend to five, he turned it on full and said: “It blows so well. “I put my hand up, it’s not the first or second blow for me. At the same time, the noise is as if the car is driving on it!

11 Reply from Kolyan 2009-06-09 12:06:37

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Re: Silent heater motor

I don’t want to upset you, but it looks exactly the same on foreign cars. The point is not in the design as a whole, but in the design of the blades.

then get some fun from a foreign car

12 Reply from Dixon 2009-06-20 16:39:55

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Re: Silent heater motor

The problem is not in the fan, but in the design; otherwise they stand vertically, so unbalancing is almost impossible.

First, you should clean it from leaves and dust, if there is no filter, lubricate it and try to balance it using plasticine on the blade. The weak point of the valve is in the bearing, it becomes loose.

13 Reply from Evil 2009-06-20 19:12:30

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Re: Silent heater motor

+ most of the noise is from a thundering torpedo. Or if it doesn't fit. The seal is decrepit, etc. By the way, when I was gluing the torpedo, I removed the old one and glued the new one with strips of bitoplast.

The fan motor is noisy and malfunctions

  • This indicates a problem in the VAZ 2114 fan cooling system, but provided that the above problems are corrected. The cause of a motor malfunction may be: equipment failure, or poor contact, which occurs as a result of sticking fan brushes;

The result of troubleshooting may be a complete replacement of the motor, which has repeatedly begun to fail you.

  • Problems lie in the operation of the power unit;

This may happen if there is no power to the motor. Problems should be looked for in the following:

  1. 1. Poor contact on the fan.
  2. 2. Motor brush sticking.
  3. 3. Motor performance.

Replacement

Replacing a failed unit is not difficult. Follow certain rules and sequence of your actions to achieve the desired result.

  1. Disconnect the negative terminal from the battery.
  2. Lift the hood and in the engine compartment, remove all the mounting bolts that hold the plastic trim.
  3. For now, the overlay can be moved to the side so that it does not interfere with work.
  4. Remove the rubber seal, which also has its place in the engine compartment.
  5. Remove the protective cover from your heater motor. So you have reached the desired object and can begin replacing.
  6. On the sides of the motor are two bolts that hold your fan in place.
  7. Now go into the interior and remove the driver's side panel. There is a positive plug located there, which must be disconnected.
  8. Next, look for the negative wire. It is held on by one nut, which must be unscrewed.
  9. The disconnected wires are inserted into the hole in the body of your car, passing through the rubber seal.
  10. Remove the damaged motor. To do this, you need to turn it and pull it out through the right side.


Dismantling the fan motor

Follow the reassembly sequence strictly to avoid mistakes that could lead to even more serious problems.

As you can see, removing the device is not difficult. Having studied the condition of the fan motor, we can draw a conclusion regarding the need to replace it. Sometimes car owners get by with simply repairing brushes or replacing fuses.

How to remove the fan from the VAZ 2114 stove?

To do this, you need to know where exactly it is. The fan is placed in a special container, which is located in the hood of the vehicle near the windshield.

To remove the fan you will need an ordinary screwdriver and a basic set of keys. Let's take a look at the step-by-step removal of the fan:

  1. 1. You should find the plus wire of the equipment. Disconnect it;
  2. 2. Since the casing cover is secured with screws, remove them completely;
  3. 3. Remove the casing and unscrew the screws;
  4. 4. Unscrew the screws that secure the air intake grilles;
  5. 5. Remove the motor of the VAZ 2114; to do this you will have to move it slightly towards you and lift it;
  6. 6. After removing the motor, turn it 90 degrees. This is necessary to remove it from the casing and remove it.


As you can see, replacement is not such a difficult matter. Therefore, these works are easy to do yourself.

Messages 13

1 Topic by Koldun 2009-02-03 09:43:16

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Topic: Silent heater motor

Actually, I’m wondering if it’s possible to install some kind of motor to make it less noisy? Or install a fan yourself with a larger diameter, but with a lower rotation speed..

2 Reply from Dj_Spacer 2009-02-03 13:12:02

  • Dj_Spacer
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Re: Silent heater motor

In appearance, the engine from the Opel Vecta stove is more or less suitable, of course you will have to farm a little, but you can put it in

3 Reply from Stasyuk 2009-02-08 18:03:35

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Re: Silent heater motor

You can try to use a computer cooler.

4 Reply from AltChrome 2009-02-10 10:47:42

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Re: Silent heater motor

You can try to use a computer cooler.

You should also put it on the inlet so that it blows.

5 Reply from ZenD 2009-02-10 12:12:33 (2009-02-10 12:16:21 edited by ZenD)

  • ZenD
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Re: Silent heater motor

Actually, I’m wondering if it’s possible to install some kind of motor to make it less noisy? Or install a fan yourself with a larger diameter, but with a lower rotation speed..

I think you can modify the standard motor

or improve the sound insulation of this very motor

6 Reply from XelleX 2009-05-04 06:28:58

  • XelleX
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Re: Silent heater motor

don't beat yourself up. Turn up the music louder, and good luck, kill the suspension.

7 Reply from salavinka 2009-05-04 08:08:27

  • salavinka
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Re: Silent heater motor

Well, I don’t know where it’s much quieter for our cars, for comparison, try listening to the stove on a classic, in comparison with it, the “eighth” is just quiet and quiet, at first or second speed you can hardly hear it anyway, Tashkent in the winter in the cabin, but on I only turned on speed 3 once or twice, just for fun.

8 Reply from Kolyan 2009-06-08 22:10:09

  • Kolyan
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Re: Silent heater motor

It is noisy on the classic, but it blows well. I am for replacing the motor and fan. Samara has a blunt (cylindrical shape) Nada like a table fan with 3 blades.

9 Reply from Dj_Spacer 2009-06-09 04:49:52

  • Dj_Spacer
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Re: Silent heater motor

It is noisy on the classic, but it blows well. I am for replacing the motor and fan. Samara has a blunt (cylindrical shape) Nada like a table fan with 3 blades.

I don’t want to upset you, but it looks exactly the same on foreign cars. The point is not in the design as a whole, but in the design of the blades.

10 Reply from ZipeR 2009-06-09 11:50:17

  • ZipeR
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Re: Silent heater motor

And what blows on the classics is a question! I set a new stove motor for a friend to five, he turned it on full and said: “It blows so well. “I put my hand up, it’s not the first or second blow for me. At the same time, the noise is as if the car is driving on it!

11 Reply from Kolyan 2009-06-09 12:06:37

  • Kolyan
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Re: Silent heater motor

I don’t want to upset you, but it looks exactly the same on foreign cars. The point is not in the design as a whole, but in the design of the blades.

then get some fun from a foreign car

12 Reply from Dixon 2009-06-20 16:39:55

  • Dixon
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Re: Silent heater motor

The problem is not in the fan, but in the design; otherwise they stand vertically, so unbalancing is almost impossible.

First, you should clean it from leaves and dust, if there is no filter, lubricate it and try to balance it using plasticine on the blade. The weak point of the valve is in the bearing, it becomes loose.

13 Reply from Evil 2009-06-20 19:12:30

  • Evil
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Re: Silent heater motor

+ most of the noise is from a thundering torpedo. Or if it doesn't fit. The seal is decrepit, etc. By the way, when I was gluing the torpedo, I removed the old one and glued the new one with strips of bitoplast.

Main causes of malfunction

Most often, the system stops functioning normally for the following reasons:

  1. Fuse F-7 with a voltage of 30-A does not work. The fuse is also responsible for the operation of the cigarette lighter, headlight washers, and lighting in the glove compartment, so it is not difficult to identify this malfunction.
  2. Oxidation of contacts on the motor block.
  3. The ignition relay is stuck. If the heater motor starts working only after the engine has warmed up, then the reason is a faulty relay.
  4. Resistor failure. This element is responsible for the operation of the stove in different modes. If the motor turns on only in mode 3, then the resistor is faulty and needs to be replaced.
  5. The heater motor itself burned out.

Advice: To determine the exact cause of poor stove performance, we recommend sequentially eliminating each of the above points.

What to do if heat transfer from the stove is low

Unscrew from the side of the passenger dashboard. Carefully inspect the hoses coming from the stove. Assess the degree of their heating. If they are cold, this means they are clogged and need to be cleaned. After cleaning them, take care of monitoring the engine using the sensor.

What to do if the replacement did not produce results and the motor still refuses to work?

To avoid unforeseen situations, the best way out of their situation is to contact a car service.

The problem of a non-working stove on the VAZ 2114 model occurs quite often. In most cases, the motor that is responsible for supplying warm air to the cabin fails. You can fix the problem without the help of car service specialists; just use the step-by-step repair instructions.

Main causes of malfunction

Most often, the system stops functioning normally for the following reasons:

  1. Fuse F-7 with a voltage of 30-A does not work. The fuse is also responsible for the operation of the cigarette lighter, headlight washers, and lighting in the glove compartment, so it is not difficult to identify this malfunction.
  2. Oxidation of contacts on the motor block.
  3. The ignition relay is stuck. If the heater motor starts working only after the engine has warmed up, then the reason is a faulty relay.
  4. Resistor failure. This element is responsible for the operation of the stove in different modes. If the motor turns on only in mode 3, then the resistor is faulty and needs to be replaced.
  5. The heater motor itself burned out.

Advice: To determine the exact cause of poor stove performance, we recommend sequentially eliminating each of the above points.

Causes of malfunction

Note that the reason that the fan does not turn on is problems with the power circuit. Oxidation of wiring contacts, blown fuse, faulty resistor - all this leads to the cessation of operation of the electric motor. Therefore, if it does not turn on, you should first check the power circuit components. Common problems with the fan motor are the occurrence of extraneous sounds during operation - squeals, rattling, interruptions in operation - spontaneous stopping, difficult starting, etc.

The reason for the appearance of third-party sounds:

  1. Deterioration in the landing bushings into which the electric motor rotor is installed, lack of lubrication in them. Because of this, the rotor becomes loose during operation, which creates increased vibrations and rattling, and “dry” friction is accompanied by squealing.
  2. Interruptions in operation are caused by critical wear of the graphite brushes and contact plates of the rotor. Because of this, the brushes and plates cannot make normal contact with each other, which leads to problems in the operation of the fan motor - it does not spin up when turned on and may stop spontaneously.

Troubleshooting the electric motor of the stove is a problematic process and not always advisable; it is easier to purchase a new fan and replace it.

Video: Repairing the VAZ 2114 stove motor

When does the heater motor need to be replaced?

There are several signs that will tell a car owner that something is wrong with the heater motor. Here are the most common of them:

  • When you try to turn on the stove, you cannot hear the hum of the motor, and this picture is observed at all three speeds.
  • The motor supplies air at all speeds, but operates intermittently.
  • The operation of the motor is stable, there are no interruptions in the supply of warm air, but instead of a uniform hum, extraneous sounds are heard, a grinding sound, which later develops into a piercing creak.

Important points

In order for the stove repair to proceed as quickly as possible, and its results not to disappoint the car owner, you should adhere to the rules below:

  • When removing the old motor, be sure to turn it. If this is not done, part of its fastening may break and get stuck in the torpedo, or more precisely, in the mounting bracket. And getting to the stuck fragment will not be so easy.
  • When tightening the mounting screws with a Phillips screwdriver, you should not use too much force: they are small, so the threads in their sockets can easily be stripped.

As practice shows, replacing an engine is not particularly difficult even for a novice car enthusiast if he has held a wrench and a screwdriver in his hands at least once in his life. The whole procedure takes 40–50 minutes maximum. The main thing is not to overdo it with tightening the fasteners, and everything will be fine.

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