A breakdown of the stove fan on a Chevrolet Niva is perhaps the worst thing that can happen to a driver who is far from home in thirty-degree frost. However, such a turn of events can be avoided. The main thing is to pay attention in time to the characteristic signs indicating that the stove fan will soon fail. And after that, you can replace the device yourself without exposing yourself to the risk of frostbite.
- 2 Signs of malfunction of the Chevrolet Niva heater fan
- 3 Replacing the heating fan fuse
3.1 Sequence of actions
- 4.1 Replacement sequence
Location of the heater fan on the Chevrolet Niva
The heater fan is located in a special niche under the cabin filter, just below the windshield of the car. Under its impeller there is an electric heater motor connected to the on-board electrical network and to the vehicle's safety unit.
The Chevrolet Niva heater fan impeller is located under the cabin filter and is marked with the number 15
If the owner of a Chevrolet Niva decides to replace the heater fan, then it can be removed in two ways: through the interior of the car, partially disassembling the dashboard, or through the hole in the cabin filter (but before that you will have to remove the filter itself, of course). The second method will be discussed below, since it is considered the least labor-intensive and even a novice driver can use it.
To watch online, click on the video ⤵
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Source
Signs of malfunction of the Chevrolet Niva heater fan
There are several typical signs by which a driver can understand that something is wrong with the fan. Here they are:
- the fan does not rotate. It’s impossible not to notice this, because the car’s interior suddenly becomes unusually quiet. This problem occurs when fuse F18 in the safety block, which is responsible for the electrical circuit of the fan motor, fails. In addition, the winding on the fan motor itself may be damaged. For example, the insulation on it may be broken, after which the adjacent turns short-circuit;
The adjacent turns on the Chevrolet Niva fan winding shorted and the motor burned out
- reducing fan speed. It is much more difficult to notice such a malfunction. With this breakdown, the electric motor of the stove continues to work, but not at full power. An experienced driver with good hearing will understand that the heater fan has begun to make a different noise. This means that the rotation of the shaft is greatly hampered by worn brushes or a commutator. The problem is that a motor with such a breakdown consumes more current. And this, in turn, can damage fuse F18;
- fan creaking. It occurs when the bearings in an electric motor wear out. Moreover, as the bearings deteriorate, the creaking gradually increases, turning into a grinding sound. If the driver does nothing, the fan will simply stop and fuse F18 will burn out. In the event of this breakdown, the car owner will have to replace the entire electric motor, since it is not possible to find bearings for it on sale.
Removing and replacing and installing the heater fan on the Niva VAZ-21213 and VAZ-21214
Dear friends, today we will tell you how to independently remove and install the electric motor of the stove fan on the Niva VAZ-21213 and VAZ-21214. The procedure is quite simple; we only need two screwdrivers, a Phillips screwdriver and a flathead screwdriver with a thin blade. The reason for removing and replacing the heater motor may be its squealing due to wear on the bushings. Often even new heater motors suffer from this problem, so when replacing the heater motor, we recommend that you install a bearing motor. To get to the motor we need to remove the lower part of the stove body, and to get to it we need to remove the shelf, the radio panel and the decor on the tunnel.
In general, let's get started, and start by removing the storage shelf under the glove compartment, pick up a Phillips screwdriver and unscrew the following screws:
We move the shelf to the side. Then we move on to the decorative trim on the tunnel, it is also held in place by screws, they are located in this way, see the photo below:
Carefully remove the chips from the cigarette lighter, put the tunnel decor aside, we don’t need it for now. Now let's move on to the tape recorder panel. To begin, use a flat screwdriver to pry up the buttons one by one:
Carefully remove the terminals from them and move all the buttons to the side. We recommend labeling the terminals, this will speed up the assembly process and help avoid mistakes!
Gently pull the plastic nozzles of the stove levers towards you, they will come out with force:
Now again we take the Phillips screwdriver in our hands and unscrew the fastenings of the radio panel to the dashboard on both sides:
Then use a flat screwdriver to pry the panel from above and carefully remove
Now we have access to the stove body. But first, we unscrew the rotation relay to remove the minus chip of the heater fan from it:
Now we are interested in the metal latches of the stove, here they are in the photo, there are only 4 of them, two on each side:
They can be removed either by hand or by prying them with a screwdriver. Be careful, they are springy and can fly away in an unknown direction, to the land of lost things
After this, the lower part of the stove body falls into our hands and is calmly removed, we gain access to the culprit of the action - the stove motor:
It is also held on by two metal latches; it is more convenient to pry them off with a screwdriver:
After this, disconnect the motor wiring and remove it from the stove body
We remind you that the stove motor is essentially unrepairable and if it “squealed” then the bushings are damaged and then only a replacement is needed. Ideally, straight to the bearing. When assembling and installing, do not forget to put rubber spacers on the motor, otherwise vibration will occur. We perform assembly in reverse order. So you have learned how to independently remove and install the heater motor on the Niva VAZ-21213 and VAZ-21214. Good luck to everyone on the roads and fewer breakdowns.
Stove NIVA
Having set out to increase the efficiency of my car's heater, I re-read the available methods on the forums, and realized that these methods have some drawbacks that did not suit me. For example, installing a fan from a VAZ 2108 allows you to increase the air flow through the heater and blower nozzles, but this air is taken from the street, it is icy, and therefore the interior begins to warm up only after the engine has completely warmed up. In addition, this method requires significant modifications to the design of the heater, as well as the cost of purchasing a fan. Next, I’ll tell you how to modify the stove on the Niva with your own hands without investment and in a short time.
Fan replacement
The main reason for the low temperature in the car is the poor performance of the heater fan, which forces warm air through it into the cabin. In addition, being directly inside the car, it operates quite loudly at high speeds and whistles unpleasantly, especially in winter. Therefore, it is replaced with a fan from a VAZ-2108 (“eight”) car, which together with the casing is often called a “snail”. Their sizes differ slightly, so installing a new one is quite simple, with minor design modifications. Place the fan in the engine compartment, inside the air intake. This significantly reduces the noise from it. The heater radiator shutter needs to be removed.
You can leave the standard two-speed airflow mode switch
or replace it with a three-position (and, if desired, four-position) installed on 2108, adding an additional resistor from the “eight” to the fan circuit.
They place it inside the air duct, since it needs airflow.
The cross-section of the wires suitable for it needs to be increased, since the new motor consumes more power.
The outer openings for air passage in the hood must be sealed to reduce the flow of cold air through them to the stove by half.
Other details
The standard heater radiator and thermostat are also replaced.
Preference is given to three-row copper radiators. They are more efficient in operation and leak less often. The thermostat is replaced with an analogue one or its thermal insert is modified. Do-it-yourself modification of the stove on Niva 21213 with your own hands is quite labor-intensive and takes a lot of time. To modify the heating system of this car, you can find ready-made kits on sale that make this work easier. The procedure is presented in the video “Remaking the stove on Niva 21213 with your own hands: video instructions.”
Replacing the heater tap
The standard heater tap on Niva 21213 does not do its job. Since it has a small cross-section, coolant flows quite slowly through the radiator. In addition, it often becomes a place for coolant to leak into the cabin. Therefore, car owners prefer to exchange it for similar models from other AvtoVAZ, Volkswagen, Toyota or Opel cars. For example, the ceramic faucet installed in 2108 has a large diameter passage opening, which increases the performance of the stove. It is better to install it in the pipe that supplies coolant to the stove, otherwise even if it is closed in the warm season, heated air will still flow into the cabin.
Dedicated to Niva car owners!
VAZ 2108 stoves (high performance, quiet operation, affordable price, fairly long service life). Various experiments with installing a fan strengthened the idea of installing it in the engine compartment. This required a major modification to the stock air intake. By cutting and soldering the air intake, the required design was obtained. Practical tests have shown its high efficiency. As it turned out, in its research Niva stove 2108 with an electrical harness
