The main reason why you have to change the heater motor on a VAZ 2110-2112 is the appearance of a rather unpleasant sound - a squeak, a squeal... call it what you want. In general, when the heater fan on your car starts to squeak, even lubricant in most cases cannot solve this problem. As a result, the only reliable solution is to completely replace the heater motor.
This work is certainly not fast, but in principle, you should not have any special problems when performing it. On VAZ 2110-2112 cars there are two types of interior heater, old and new. So, in this article we will consider an example using an old-style stove, since my car is manufactured in 2002.
- 10mm deep head;
- a Phillips screwdriver, regular and short;
- ratchet with extension.
To get to the heater motor, you will need to perform some preparatory steps, namely:
- Remove the wipers along with their arms.
- Remove the top plastic trim of the windshield (frill).
- Remove the hood seal and the insulation that covers the heater housing.
After this you should see the following picture:
To understand everything, it is better to watch the special video instructions that I will prepare for this article.
Replacing the heater fan on a VAZ 2110, VAZ 2111, VAZ 2112
Welcome! Stove fan - if we delve into the terminology, the word fan means an impeller with blades, but people are so used to saying the word fan, that’s why we called this article that way, in fact, in it, today we will look at replacing the stove motor, we’ll immediately warn you that If your motor starts to work incorrectly, for example, sticks, or all the contacts inside it have burned out, then do not try to restore it, but rather buy a new motor from a car shop, of course, this pleasure is not cheap, but you will install it and forget it for a very long time time to talk about it, if you have absolutely no money, and the stove has stopped working (the engine has burned out), and it is cold outside, then you can get it cheaply or look for it at various flea markets, etc.
Note! To replace the stove fan, you will need: Screwdrivers of various types (from short to long), spanners, wrenches and we advise you to stock up on a new cabin filter (This is only if the filter has not been changed for a long time), just to remove heater motor, you will need to remove the windshield covers, and by removing the covers, you will still have access to the cabin filter!
Summary:
Where is the heater fan located? Having removed the covers that are located under the windshield, you will see something like this picture line up before your eyes (see photo below), pay attention to the red arrow, it was made to separate the housing in which the heater motor is located (It is on the right) and to separate the air intake ( The air intake is on the left), in the place where the air intake goes into the stove, the cabin filter is also located.
When should you change your furnace fan? At the beginning of the article, we roughly described all the symptoms that will occur if the motor fails, but it needs to be repeated, not all people read everything that is written on the page, in general, closer to the point, the fan can fail completely (This happens from time to time, and also if a high voltage was applied, then it could simply burn out, there are such cases due to the negligence of the people themselves, some people put coins instead of fuses, the wiring began to melt, and due to the fact that there is no fuse, the circuit does not open and the wiring ignites immediately), maybe partially (any speed doesn’t work, but it’s not a stove, it’s most likely an SAUO unit, it’s easy to check, just replace it with a known good one, if everything starts working as before, then the unit needs to be replaced), and It may generally begin to make unpleasant sounds (This is also a stove), such as squeaking and the like, all these malfunctions appear over time, or maybe immediately after purchase if the stove is defective or was purchased in such a used condition.
Note! By the way, besides the motor itself, many other things can fail, most often it’s the SAUO unit, or less often the stove itself, and don’t forget about the fuse, otherwise you’ll disassemble the whole stove, replace the motor and other heating parts, but nothing will change, then look in the fuse block and see a burnt-out fuse for the stove, it will be very disappointing for you, it’s just a waste of money, so always in the event of any breakdown, first of all open the mounting block and see if all the fuses are intact, as a rule the fuse goes to the stove F18!
Possible problems
If the stove motor is not working well, do not rush to blame it. Of course, it tends to become clogged with extraneous small things - particles of dust, soot and other contaminants. It is enough to do preventative cleaning once or twice a season. Similar procedures must be carried out before the end and at the beginning of the operating season. The temperature sensor may fail. In this case, the movement of the damper is disrupted. In normal mode, it opens at the maximum when the red dot is reached and closes when the blue minimum point is reached. The indicators of normal resistance also differ. Typically the value is in the range of 20-25 ohms. If it goes beyond the limits, the fan may not heat or cool the air properly. A malfunction of the stove fan itself is indicated by unusual behavior. For example:
- Grinding noises during operation and extraneous noises;
- The fan does not start at all;
- Reduced efficiency and volume of air injection;
- I hear the fan is not working well.
The first place in the frequency of breakdowns is occupied by the electrical circuit from the battery to the stove motor. If the cable fails completely, a blown fuse is to blame. Malfunctions of the electric motor at different speeds hint at a blown resistor. And if there are no changes in the operating mode, the diagnosis is obvious - the control controller does not respond. The terminals of various connections may also fail. But if the electrical equipment is normal, then the device will have to be dismantled and thoroughly rebuilt.
How to replace the heater fan on a VAZ 2110-VAZ 2112?
Note! These instructions for replacing the heater motor are suitable for many cars of the tenth family, but not for all, because dozens were produced in very different configurations and designs throughout the entire time, some VAZ 2110 even had an engine from Opel installed from the factory, such a car is marked VAZ 21106, so we won’t be able to write about everything (since it will be a very long article), we’ll just take the most common tenth family and use its example to show how to replace a stove motor through descriptions and pictures!
1. First of all, you will need to get to the motor, it is hidden under a trim that is located under the windshield, and inside this trim, the motor is still placed in a casing, so you will have to remove a lot of decorative elements, in more detail how to do this is described in the article under title: “Replacing the cabin filter on a VAZ 2110” and by the way, the trim that is located under the windshield cannot be removed without removing the brush, and when you lift it, pay attention there will be a tee under it (see the location where it is located on the large photo), disconnect the hose from it that is connected at the bottom (see small photo) and the trim can then be removed from the car.
2. We go further, as soon as all the elements that prevent access to the casing in which the motor is located are removed, find the wires coming from the motor, or to be more precise, one “Plus” wire and one “Minus” wire, so here is the minus (Indicated in green arrow) is secured to the nut (indicated by a blue arrow), you unscrew it, but the plus (indicated by a yellow arrow) is connected to another wire through a wire block and a connector (see small photo), disconnect them from each other.
3. Then, using a flat screwdriver, pry out the four latches (They are indicated by arrows) that fasten two casings together, on one of which the stove motor is attached. Be sure to replace any latches that will be broken during their removal with new ones during reassembly. It is recommended to install all the fasteners in their places to prevent the housings from moving between each other.
4. And finally, unscrew all the screws that hold the casings together, there are only about 8 or 10 of these screws (We could be wrong), when they are all unscrewed, the casings can be separated (see small photo), but just remember where the screws go they are twisted because they have different lengths and you cannot wrap the long ones where the short ones should be located and vice versa.
Note! The stove motor can be removed assembled with the casing, or you can immediately take it out separately, it’s up to you how to do it, but having taken out everything assembled, it will be much easier to disconnect the motor (since it will be more convenient), and the motor is separated in the following way, you will only need just remove two wires (minus wire and plus wire) from the hole into which they are threaded in the casing and that’s it!
Stove fan
Structurally, the fan consists of a DC electric motor with a commutator-brush assembly and an impeller mounted on the electric rotor. motor. The electric motor is powered from the vehicle’s on-board network. There are several modes of fan operation, the difference between which comes down only to the rotor rotation speed, and this is realized by inserting a resistor into the power supply circuit of the electric motor.
The fan operating mode is set using a handle located in the heater control unit on the center console. Initially, on the VAZ-2110, this handle was part of the design of the SAUO controller, but functioned separately from the controller itself. Later, the ACS added an automatic fan control function (position “A” on the handle), using which the controller regulates the rotation speed of the electric motor in order to maintain the set temperature.
The electric motor used in the design of the VAZ-2110 fan is simple, but it has “weak points” - the commutator-brush assembly and bearings. Wear of these elements causes incorrect operation and complete inoperability of the fan. Short circuits and winding breaks in the stove drive are rare, but don’t forget about these breakdowns either.
Symptoms of failure. Heater components that affect fan operation
Signs of a malfunctioning stove fan are quite obvious and impossible not to notice. Common symptoms of failure:
- Increased noise, grinding noise during operation.
- Significant reduction in air injection efficiency.
- The fan does not turn on.
- Spontaneous change in the rotation speed of the electric motor.
- It can be determined by ear that the electric motor is operating under heavy load.
In some cases, such consequences result from malfunctions in the power supply and fan control circuits, so you should check them first. This applies to:
- fuse (blowout is the cause of complete failure of the electric motor);
- resistor (if it is faulty, some speed modes of the electric motor stop working);
- controller (the knob for switching fan modes is part of its design, so malfunctions of the automatic control system affect the functioning of the electric motor);
- wiring terminals of the power and control circuits (oxidation, damage to wires is one of the reasons for a malfunctioning electric fan).
If diagnostics of these elements shows that they are in good working order, it is necessary to dismantle and repair the fan itself. But it can be diagnosed first.
Fan check
A check is done by directly powering the electric motor from the battery (we lay wires from the battery terminals and connect them to the power terminals of the motor) - operation under load, difficulty in gaining rotation speed, squeals and squeaks indicate wear of the drive components and the need to replace them. But if, even with direct voltage supply, the electric motor does not start, it is most likely that it has burned out or the windings have broken. Such faults are difficult to fix and it is easier to replace the entire unit.
Design features of the stove of the old and new models
The design of the electric motor of the stove on the VAZ-2110 is identical, but the fans and their location are different. On models of the first years of production, the electric fan is installed in the stove housing in front of the radiator and it is located horizontally (old-style stoves). Afterwards, the design was revised - the fan was already placed in the cabin filter housing and installed vertically (new model heaters).
Despite the design features, dismantling the fan is a simple operation and does not require complete disassembly of the stove.
On a VAZ-2110 with an old-style heater, to remove the electric fan you need to:
- Dismantle the frill.
- Remove the front wall of the niche in which the heater is located.
- Remove the back cover of the fan housing by first unscrewing the screws and removing the clamps.
- Disconnect the wiring from the fan and remove it.
As for models with a new type of stove, the technology for removing the electric stove fan on such cars is different:
- dismantle the “jabot” and the front wall;
- remove the air filter;
- unscrew the fastening of the filter housing to the stove body and separate them;
- disconnect the wiring;
- remove the filter housing together with the fan;
- dismantle the electric fan.
After removing the electric motor with the impeller, we disassemble it, perform troubleshooting, replace worn elements and put it back together.
Replacing the stove motor
The main reason why you have to change the heater motor on a VAZ 2110-2112 is the appearance of a rather unpleasant sound - a squeak, a squeal, call it what you want. In general, when the heater fan on your car starts to squeak, even lubricant in most cases cannot solve this problem. As a result, the only reliable solution is to completely replace the heater motor.
This work, of course, is not fast, but in principle, you should not have any special problems when performing it. On VAZ 2110-2112 cars there are two types of interior heater - old and new. So, in this article we will consider an example using an old-style stove, since my car is manufactured in 2002.
Model selection
Even if your VAZ 2110 has an old-style electric motor (manufactured before 2004), you can, of course, find a “original” fan. But it is quite possible to install a new type of motor instead - it is larger than the previous one, secured with three bolts. And its cost is not that high.
By the way, the new model heater fan from the VAZ 2110 is even suitable for some Nissan models with minor modifications. This is what the owners of this car often use when they install at least three times cheaper motors in their foreign car during repairs.
Causes of motor malfunction
There are several reasons why the stove on the “ten” may not work:
- The fuse has blown. You can easily check this malfunction - if the backlight in the glove compartment and under the cigarette lighter does not work, it means the engine has burned out;
- if the motor only works at 4th speed, the resistor is faulty;
- a broken circuit also often causes the motor to not work;
- A malfunction of the ACS unit is another cause of the malfunction.
If, after checking all the above reasons, it was not possible to restore the operation of the stove, you can safely proceed to removing the motor for its subsequent replacement or repair.
Heater fan replacement work
Please note that for self-removal you will need a certain set of tools.
- 10mm deep head;
- a Phillips screwdriver, regular and short;
- ratchet with extension.
To get to the heater motor, you need to perform some preparatory steps, namely:
- Remove the wipers along with their arms.
- Remove the top plastic trim of the windshield (frill).
- Remove the hood seal and the insulation that covers the heater housing.
After this you should see the following picture:
To understand everything, it is better to watch the special video instructions that I prepared for this article. There are other videos on the network with detailed descriptions of the main stove breakdowns and how to fix them.
Video review of replacement for VAZ 2110-2112
This process is shown using a dozen examples. If you have any questions after watching the video, write them in the comments either to this article or on the channel.
If we describe this process briefly, the procedure will be as follows:
- Remove the top clips - metal spring clips.
- Unscrew all screws securing the motor housing, side, bottom and middle.
- Unscrew the nut securing the negative wire and disconnect the positive plug.
- Remove the stove body assembly with the fan.
Installation proceeds in reverse order. In principle, in the manual presented above, this removal and installation process is shown as clearly and accessible as possible. If you have any questions, ask below in the comments.
It is worth mentioning the price of a new heater motor for a VAZ 2110-2112, it ranges from 1000 rubles for a high-quality domestic fan.
Please note that before purchasing a new motor, you should install a known working unit in place of the old one. If there are no signs of life on the fan, the problem lies elsewhere.
Source
Preparing for replacement
If you have at least some skills in working with wrenches and screwdrivers, replacing the stove motor will be a feasible repair for you. To get to the electric motor of the VAZ 2110 heater, you first need to open the hood and remove the “-” battery terminal.
Now, in fact, we are removing the motor itself, which does not work as we need, or has completely failed:
- The windshield wipers need to be removed. To do this, pry off and remove the rubber caps, take a 10mm wrench, unscrew the nuts, disconnect the brushes;
- We pry up the decorative plugs (a slotted screwdriver is useful here), unscrew the screws that secure the frill, then a couple more nuts on the edges (with a 10mm socket wrench), remove the frill;
- Having removed the rubber seal, unscrew the screws with which the engine compartment shield is attached;
- Now, remove the hose that supplies washer fluid to the injectors;
- The hardest part is getting to the right side of the engine compartment to remove it. It has two nuts at the bottom (also for a 10mm socket wrench). It would seem easy to unscrew, but it’s just painfully inconvenient. Although there is a positive point here - these nuts do not have to be completely unscrewed - the shield can be pulled out after a few turns;
- Before disconnecting this shield, remove the clamps from the hose going to the vacuum brake booster;
- Unscrew the screws (4 pieces) from the cabin filter cover and remove it;
- The heater motor has already appeared. It is necessary to disconnect the heater motor block, as well as the resistor block;
- Now you can pull out the left side of the stove, and with it the fan motor;
- It became possible to replace the heater fan;
- Reassembly is carried out in the same order, only exactly the opposite.
Be prepared for the fact that for the first time replacing the heater motor on a VAZ 2110 (repair) will take you a couple of hours.
Many motorists have encountered the fact that the heater fan on a VAZ-2114 has failed. But not all of them know that it is quite easy to replace it with your own hands, and it is not necessary to pay a small amount to a car service center. On average, the entire process will take up to half an hour and will help save significant money.
How to remove and replace the heater motor on VAZ-2110, 2111 and 2112
Hi all. Today we will tell you how to get to the VAZ-2110 heater motor and remove it for repair or replacement. The procedure is relatively simple, you don’t have to disassemble the heater itself and this is a big plus, because disassembling it is really not as easy as it seems. So, let's start by following the instructions and removing the windshield trim and trim, the right soundproofing padding and the windshield wiper itself.
First of all, disconnect the battery. Then disconnect the positive connector of the heater motor:
Then, having gained access, unscrew the nut securing the heater motor mass:
We take a strong flat screwdriver and carefully unclip the latches of the stove body, be careful, they are springy, do not lose sight of them
