Replacing the VAZ 2105 stove fan with your own hands

Examination

To make sure that the motor is the cause of the heating system malfunction, you should carry out a simple but indicative procedure:

• Start the car;
• Turn on the first, second and third speeds of the stove alternately;
• If there are no sounds indicating the start of the fan operation, the motor has failed;
• If the fan did not turn on at speeds 1 and 2, but started working at speed 3, then the cause of the problem may be a switch or an additional resistor.

Causes of failure

The motor may not work for several reasons. Each of them requires separate consideration. Therefore, we invite you to familiarize yourself with the possible causes of fan failure in our table.

Depending on the problems encountered, you may need to replace the fan. Changing the motor is not difficult, although to do this you must have some skill or at least minimal experience in working with the electrical equipment of your car.

The first step when replacing the heater motor is to disconnect the battery.

Motor location

Design and operation of the VAZ 2107 heating system

The system includes the following components:

1. Heater VAZ 2107, whose task is to heat the air. The main element of the heater is the radiator, through which coolant circulates.
2. A fan that directs heated air into the cabin. It is attached to the casing using elastic pads that dampen vibration.
3. Heater control system, including a fan button, handles and dampers for the heating mode control system.

The heating system works like this:

Through the grilles on the hood, air enters the air supply box located in the engine compartment near the windshield.

In the event of rain or downpour, the water is separated from the air and flows into the holes in the box. This allows you to use the stove in any weather, but until the radiator heats up, the air entering the cabin during rain will be damp.

The air flow is directed to the VAZ 2107 heater and heats up as it passes through the radiator. Heating is regulated using a tap, which regulates the amount of coolant passing through. The crane is controlled by a flexible rod attached to the control lever.

While driving, the air flow enters the engine compartment and the air independently enters the heater. When stopping or at low speed, an electric fan is used, controlled by a switch that has three positions: “off”, “full speed” and “low speed”. Reduced speed is achieved by turning on the electric motor through a resistor, which reduces the voltage on the motor winding.

After the radiator, the air enters the air ducts and exits through deflectors, which allow you to change the direction of flow. Warm air can be directed onto the windshield and side windows, under the feet of the driver and front passenger.

Control elements of the air flow from the VAZ 2107 stove:

• Fan air distribution cover that regulates air flow.
• Levers and handles that change the position of the air supply covers and dampers that regulate airflow.

Before repairing the VAZ 2107 stove, it is necessary to understand the causes of the malfunction.

VAZ stove fan squeals

Owners of classic Zhiguli cars know that when the heater is turned on, it can make a heart-rending squeal. This sound is produced by a fan whose rotor is distorted in the bushings. What can be done?

In old fans that were installed on “sixes”, “fives”, “sevens” and other classic “Zhiguli” vehicles, the rotor is mounted in bushings. This is not the best solution and leads to the fact that over time the bushings break and the rotor begins to jam during operation. Later, new fans began to be installed on the “classics”, which had bearings instead of bushings. Such fans are quieter and blow better.

This is done by lubricating the rotor. To do this, you need to get to the fan. How to disassemble the stove on a classic is described using the example of a “six”, in the article how to flush the heater radiator on a VAZ-2106. When the heater halves are disconnected, you need to disconnect the battery (to prevent the fan from suddenly starting for any reason) and unscrew the nut that secures the impeller to the heater fan motor. There is no need to remove the fan itself.

We remove the impeller, remove the felt washers from the shaft and carefully spray the shaft where it enters the engine housing with an aerosol lubricant, such as WD-40 or Unisma. The goal is to force the lubricant inside. Aerosol lubricant is penetrating, meaning it easily passes through cracks, so a few presses on the sprayer are enough. The lubricant will flow along the rotor shaft and lubricate the bushings.

You can check whether the lubricant is useful right away. Install the washers and impeller on the shaft, tighten the fastening nut, connect the battery and press the heater fan switch on first at low speed and then at high speed. If the squealing persists, repeat the lubrication procedure. Ideally, the squealing should disappear completely.

This repair is very dubious, from the category of “done on the knee”. However, fans lubricated in this way operate without squealing for more than a year. In conditions where it is not possible to install a new fan, this is a good solution.

To remove the electric motor we will need: a screwdriver and a 14mm wrench. If everything is there, then we will begin the repair.

The first step is to remove the lower console; to do this, unscrew the two screws that secure the lower part to the car body.

Remove the storage shelf located under the dashboard. The shelf is secured with four screws.

After removing the shelf, unscrew the screw securing the console to the front of the body.

Next, remove the additional instrument panel from the console and unscrew the two screws securing the console.

Remove the console while holding the additional panel with your hand.

Remove the air duct by unscrewing the two screws securing it.

Disconnect the four radiator and fan shroud holders and, moving slightly to the side as far as the wires allow, disconnect the fan shroud.

Remove the fan motor switch from the instrument panel, disconnect the wires going to the electric motor from it, and label them before disconnecting them. Next, push the wires into the switch hole.

Now we need to remove the fan impeller casing and disconnect the wires from the resistor.

Unscrew the nut located on the right under the instrument panel where the casing is attached to the car body and remove the ground wire.

Now you can remove the fan motor cover from the car.

Sources

• https://russia-avto.ru/remont/salon/vizzhit-ventilyator-pechki-vaz
• https://vz06-up.ru/otp/ventilyator-pechki-vaz-2106.html

Common stove malfunctions and options for eliminating them

Before the onset of cold weather, it is imperative to check the functioning of the main elements of the VAZ-2107 heater.

Most often, the following malfunctions occur in the interior heating system of the seven:

1. Poor quality connection of pipes and air supply pipes.
2. Radiator and heater tap leaking.
3. Malfunction of the electrical equipment of the stove - oxidation of the wires, failure of the motor or fuse of the stove. The fuse is located in the block under the hood of the car. The fuse box is located on the partition between the passenger compartment and the engine compartment on the passenger side.

Even a novice driver can fix such malfunctions in the heating system. More serious breakdowns may lead to the need to purchase a new stove.

First you need to conduct a visual inspection. To do this, you need to disassemble the stove and clean it of particles of debris and dust collected over the summer.

One of the most common problems in the heating system of the VAZ-2107 is poor-quality sealing of the stove air ducts. This problem can be eliminated by treating the cracks in the plastic elements of the heater housing with silicone. Also, the holes near the pipes must be sealed with rags. Eliminating the holes will reduce the loss of warm air and will result in faster heating of the interior.

The next step is to check the heater and radiator valves for leaks. This is the main headache for owners of domestic cars. If the stove faucet or pipes are leaking, they must be replaced with new products. At the same time, the sealing butt gaskets are also changed. If the radiator itself is leaking, then there are two options for solving the problem. Most often, sevens have an old-style copper radiator installed. A copper radiator can be soldered and thus extend its life. If the seven is equipped with an aluminum radiator, then it cannot be repaired and must be replaced with a new product.

• 
  Radiator for stove in VAZ 2107: copper or aluminum

If, after carrying out all the preventive manipulations, cold air enters the cabin, the reason may be a clogged radiator, then it will need a thorough cleaning. Experts recommend carrying out preventive radiator flushing at least once a year. At the same time, all hoses and pipes are washed.

For preventive purposes, it is important to inspect the stove wiring for oxidation or poor contact insulation in order to avoid short circuits, burnout of the motor and heating system fuse. If the stove is working, then a visual inspection and troubleshooting is sufficient.

Otherwise, it is necessary to check the functioning of the electrical circuit elements using a tester.

Such simple manipulations will save you from unpleasant situations with the heating system during the cold seasons.

Removal and installation

If you decide to completely replace the stove, then this is done as follows:

1. the ground wire is disconnected from the battery;
2. the instrument panel and receiver panel are removed;
3. the heater valve control lever is moved all the way to the right;
4. the coolant is drained from the heating system;
5. the clamps are loosened;
6. the rubber hoses are disconnected from the heater pipes (they control the supply and removal of fluid);
7. the seal is removed (it is recommended to watch a detailed video before removing);
8. two bolts securing the bracket are turned out (they are located inside the engine compartments);
9. the bolts of the fastening brackets are loosened;
10. the rods are disconnected and the bracket is removed;
11. the nozzles are removed on the left and right;
12. nut fixing the right air duct for heating the side windows;
13. the left air duct is removed in the same way;
14. we find four spring-type holders and remove them;
15. remove the heater fan casing assembly;
16. loosen the radiator casing nuts;
17. the ground wire is disconnected and the casing is removed;
18. the air duct is removed;
19. the old heater is removed;
20. The new heater is installed in the reverse order (photo below).

New heater for VAZ 2105
Council

When installing the heater, pay attention to the installation of the sealing gasket

It is located between the car body and the radiator casing. Also, the heater control should be adjusted during installation.

You can do a lot with your own hands in a way that no specialist can do. The step-by-step instructions given above will help novice motorists do everything on their own.

In addition, you can save a lot of money, because the price for these services is high today

We recommend reading:

What injectors to put on a VAZ 2109. Tight steering on a VAZ 2107. How to install crankshaft half rings on a VAZ 2109. How much antifreeze is in a VAZ 2109 carburetor. Replacement, what to choose, draining antifreeze How to remove the fuel rail on a VAZ 2112 16 valves The clutch on a VAZ 2106 will not be released VAZ 2114 the heater motor whistles Do-it-yourself pump repair for a VAZ 2101

Other actions

Owners of VAZ-2107 cars are well aware of most of the intricacies of repairing their iron horse with their own hands. Anyone who does not disdain such an activity understands perfectly well that replacing a part in a given car can be much easier than getting to it. Therefore, if you have disassembled almost half of the torpedo, you should take the opportunity and carefully inspect all those spare parts that are in your public domain.

It is necessary to pay attention to possible malfunctions that are visible to the naked eye, a violation of the tightness of the same stove, as well as signs of a possible imminent failure of some other spare part.

Replacing the heater fan VAZ 2105

Replacing the heater fan on a VAZ 2105 is carried out as follows:

1. the lower part of the stove is removed (this is a simple casing, on top of which a regular electric fan is installed);
2. the old fan is removed;
3. we cut off one of the aerodynamic ridges that supply air to the legs of the driver and passenger (this is done due to the fact that the fan motor of the VAZ 2108 is much longer);
4. the impeller is also removed, which will not allow the fan from the VAZ 2108 to sit in place;
5. Instead, a homemade one is installed.

Advice. In order not to remove the impeller, but to leave everything as is, you can use another fan. A standard five-bladed fan for classics, which has a motor several times more powerful, is suitable. And its weight is much lighter, and the rotor of the new motor rotates stronger than even that of the VAZ 2108.

Let's continue:

• increase the diameter of the impeller hole;
• we insert a new shaft there (we do this very carefully so as not to break the impeller);

Fan impeller

• connect the fan and check its operation;
• adjust the resistor and assemble everything in reverse order.

Heater VAZ 2105 fan replacement
Advice. It is recommended to replace the resistor on the five by installing the eight version.

The new resistor must ensure quiet operation of the fan. The fan switch should also be replaced.

Article: 2105-1309016-10

Order code: 001055

In stock Available for order – 10 pcs. Data updated: 05/16/2021 at 21:30

Order code
001055 Articles 2105-1309016-10 Manufacturer SYZRAN Catalog group: ..Cooling system Engine Width, m: 0.345 Height, m: 0.125 Length, m: 0.58 Weight, kg: 0.454
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• “Crystal” vases: “Classic”. Do you remember how it all began? April 16, 2013 Today, the next article in the series “Crystal VAZs or typical breakdowns of domestic cars” is dedicated to the “classics”: VAZ-2101, 2103, 2104, 2104, 2105, 2106 and 2107. These cars have been driving along our roads for decades and, despite all the shortcomings that we will talk about, their popularity is still high.

• Plastic radiator fan casing VAZ-2105 Article number: 2105-1309016-10 Order code: 001055 335 ₽ or place an order by calling 8 800 6006 966

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RADIATOR AND HEATER FAN

You should know that in order to always keep the interior of a five-wheeler warm and cozy, especially on winter days, you need to be able to increase the amount of heat supplied. Which part is directly responsible for supplying warm air? Of course, the radiator. But there is a problem - at the top five the fan is so loud that it makes you laugh.

It is very small and simply not capable of creating the required flow.

What to do? First, let's compare the fans on the VAZ 2105 and the VAZ 2108. The first motor consumes 4.5 A current and has a rotation speed of 3000 rpm, and the second one 14 A, but spins 4100 rpm. This already says something. It is recommended to replace the fan with another one.

Heater fan

How much does a new heater motor cost?

Motors are usually sold assembled with or without an impeller. In the Moscow region (Moscow city and region), the price for a new heater motor on a bearing with an impeller for VAZ 2101-07, OKA, VAZ 2121 NIVA cars is about 500-600 rubles. Without an impeller - 100 rubles cheaper.

It will be useful: The oil pressure light comes on when the engine warms up

Characteristics of the stove fan electric motor:

• Nominal voltage 12 V
• Rated power 20 W
• Maximum current 5.0 A
• Rated speed 3000 min −1
• Weight 0.85 kg.

Used on the following cars: VAZ 2101...2107, 2121 Niva, 1111 Oka.

A few more tips:

It is advisable to check the operation of the motor directly in the store. Be sure to keep your receipt after purchase.

There were even funny cases of selling defective products, when the stove motor turned in the opposite direction, and people complained about poor fan operation, and all the wires (ground and other terminals) were connected correctly.

The problem was that the assemblers at the factory had mixed up the wires by soldering them to other brushes. Therefore, nowadays you shouldn’t be surprised by anything, not even by a stove motor with a fan that blows in the other direction!

Causes of increased noise from the VA heater

1. Perhaps the lower part of the case, which is attached using hooks and fasteners, simply came unfastened. If so, just return them to their place. There are also very frequent cases when the protrusions on which these clamps hook simply break off. There are not many options here - either farm something or buy a new heater housing.
2. Squealing may occur due to unequal expansion coefficients of the shaft (steel) and brass (bushing). This squeal is characteristic at very low temperatures, with sufficiently long operation (according to wear). The solution is to replace either the electric motor assembly or replace the bushings and then treat them with a rubber.
3. Squealing can also be produced by textolite washers, which are installed to eliminate axial play. They are available on both sides of the motor shaft. Let's look at how to deal with this below.

Eliminating squealing heater VAZ

To eliminate this type of noise, you need to remove the fan and clean it from dust and dirt. Keep in mind that these works relate to the vehicle's electrical network, so before starting work, you must disconnect the ground! Within this post I will not talk about how to remove the heater fan; it will be interesting - there will be posts about this.

Essentially, we need to eliminate the end play of the fan motor. This should be done using fluoroplastic washers or similar material.

The main thing is that minimal friction is created between these materials. It is also a good idea to lubricate the bearings with a thick, temperature-insensitive lubricant. An example of such a lubricant is MS-1000 .

Next, all that remains is to disassemble the fan motor, make the required number of washers, lubricate everything, and assemble the electric motor. Keep in mind that eliminating fan noise with motor oil is a short-term improvement, but in the end you will get what you had in the first place. Motor oils are too rare, they leak and dry out very quickly.

What will you get in the end? After lubrication, the fan will rotate faster and quieter, and the squealing will also disappear in cold weather.

Failure of the stove motor on a classic is one of the common problems of the heating and ventilation system. But, more often than not, car enthusiasts are faced with the fact that the fan motor starts to whistle, squeak, and there is a hum and other strange sounds.

What does the stove consist of?

Before you start improving the stove, you need to understand what elements it consists of. Any VAZ stove consists of:

• radiator;
• air flow distributor;
• three-blade or 5-blade fan and its shell.

If the theater begins with a hanger, then the stove begins with an air intake duct. It is located at the rear of the engine block. It is here that the air coming from the street is purified from moisture. The box is protected from a hot engine by special gaskets - they act as a partition.

After the air is cleared of moisture, it enters the heating system. The steam then comes out. There is a device above the dashboard that allows some of the air to escape when driving.

The heating housing is located in the interior of the car: it is fixed to the partition with the engine.

The heater radiator has inlet and outlet channels. These channels are connected to each other by tubes. The first tube has a built-in heating valve that regulates the supply of cooling liquid. Using a lever located on the dashboard, the flow of fluid into the machine's ventilation system is reduced or increased.

At the bottom of the radiator there is a heating system fan with a small motor that allows you to adjust the fan speed (there are two speeds in total).

The exhaust device allows the incoming air to be distributed throughout the cabin.

In order for the improvement of the VAZ-2101 stove to be justified, it is necessary to understand why the stove is not working well. If you are satisfied with your car, the stove is working properly, but you want to improve its performance, then it’s time to do tuning.

Installing a new part

Installing a new part is not difficult. Replacing the VAZ-2107 stove motor is completed within a few minutes, and the longest part of this work is to put all the bolts in place and connect all the contacts.

We try not to mix up the wires and thread them into the correct holes near the grooves on which the motor itself is supported. During installation, the fan must be level, without distortions, otherwise it will cling during movement and eventually break.

When the new motor is installed, we put it in place together with the system cover. We try on the body and make sure that it fits into place without any effort and stands straight.

We put the brackets and all the bolts in place, install the insulation, frill, wipers and check how the heating works.