- this is a headache for any "nivovod". What principles were guided by the designers in its development, but you can’t call it except for quiet horror.
It cannot be said that she has many shortcomings. There are only two of them - but this is more than enough to think about replacing or reworking it.
Firstly, it does not cope with its functions at all. At a temperature in the range of + 10 ... -5 degrees, the cabin is even more or less warm. But as soon as the temperature drops below -5..-10 degrees, you feel cold even at maximum blowing power, not to mention the lower temperatures that are quite familiar to our winter - in this case, the windows simply freeze and you have to clean the "windows" in them ".
Secondly, when operating at maximum (second) speed, the fan makes such noise and squeal that it even blocks the operation of the motor. Not everyone can withstand this cacophony, so drivers reduce the airflow to first speed. As a result, the car does not warm up enough and the windows begin to freeze.
Stove modernization
To solve this problem, there is a way out - this is alteration of the stove Niva 21213. At the moment, there are already ready-made sets of converted stoves, which are based on a heater from the VAZ-2108. They are much more efficient, do their job perfectly even in extreme cold and do not make annoying sounds at all. Of course, at maximum blowing power, the operation of the fan is audible, but this is incomparable with how the Niva fan squeals and gnashes.
Those who want to do everything with their own hands just need to buy an “eight” heater, a resistor, a “snail” and a switch and install them on their Niva.
Alteration of the stove Niva 21213 do it yourself in the following order:
- Prepare the air duct for engine installation. To do this, you need to cut a new mounting hole, while trying to put the engine as low as possible into the air duct so that it does not rest against the hood;
- Take the engine power supply out of the air duct through the outlet;
- Fix the engine well in the air duct and seal the attachment points;
- Prepare two stainless steel plates to be cut to size and then installed under the nozzle and into the top opening;
- Dismantle the standard valve;
- Install the air duct with the new motor in place.
If you are the owner of Niva-21213 and are in love with this vehicle, then you are unlikely to refuse it if you find some technical flaws in it. In principle, this is absolutely correct, you can remain true to your “iron horse”, and if defects are identified, try to eliminate them yourself.
Niva-21213, indeed, needs some of your intervention, tuning the Niva stove will not be superfluous at all.
In the summer, you will not be able to notice the inconvenience, but with the onset of cold weather, you definitely cannot do without enhanced wardrobe equipment in the form of cotton pants and a jacket.
Somehow I don’t want to constantly feel like a “tanker”, so most owners of this car decide to roll up their sleeves and finalize their own stove. By the way, the same problems are inherent in another domestic model - UAZ, whose owners are also actively looking for what to do to improve the efficiency of the stove.
The process of finalizing the heating system
Some suggest getting rid of the fan installed by the manufacturer, and instead installing a fan from the G8.
If you also decide to carry out such a replacement, you need to additionally decide whether you will leave the standard stove control native or also replace it with an “eight” analogue.
Having decided on the second option, take care of acquiring the following additional items:
- fan speed switch;
- additional resistor for the stove.
So, after you have fully prepared all the necessary components, you can proceed directly to the process of finalizing the fan.
Initially, the old air intake box should be dismantled. Unfortunately, despite the fact that this requires unscrewing only four nuts, it will not be possible to do without outside help. The partner will need to hold the screws under the hood, while you unscrew them using the tube wrench.
After that, you can freely remove the air intake. Clean it if it needs to, and then cut off a small amount of plastic to provide enough space for the new fan to run.
Install the fan and carefully inspect for any interference with the installed fan. If you find such obstacles, carefully cut them off.
After you make sure that there is nothing else that can interfere, fix it with a sealant.
There are small gaps around the fan nozzle, it is important to eliminate them by covering them with any material. This will prevent warm air from escaping.
Now the assembled fan is being introduced back into the space in which its old counterpart previously “lived”. Everything is securely fixed and the closing and opening of the hood is checked. In some cases, after the introduction of a "foreign" fan, it is not possible to close the hood normally.
If everything is OK, connect all the wires, and also install new controls. Upon completion of the work performed, be sure to check your result in action.
The stove should work perfectly, and warm air should spread very quickly in the car.
Faucet replacement
Unfortunately, not only the fan and the air duct, but also the faucet of the stove itself can be the culprits for poor heating of the Niva. In particular, its diameter is incredibly small, which contributes to the slow spread of liquid through the radiator.
It is for this reason that many car owners decide on another additional tuning for heating the interior of their beloved Niva, which involves replacing the tap.
The crane will certainly have to be borrowed from other vehicles. Many foreign cars can act as “donors” for solving such a problem, but from a financial point of view, cranes taken from Volkswagen or Opel are the best.
Initially you have to. This process is time-consuming, so it is important to follow the algorithm recommended by those car owners who previously had to modify the heating system on their own, and the result was effective.
Open the hood, find the clamp that secures the hose to the pipe, use pliers to try to loosen it. Masters recommend performing such actions with gloves, because when performing such actions, you have to make an effort, the hand often breaks off and can be damaged if there are no gloves on it.
Your next task will be to detach the seal, you just need to unscrew the screws that fix this seal to the partition. Then it remains to simply remove this seal. The stowage shelf is also removed in the same way, while nothing prevents such actions from being performed.
Now go from the side of the passenger compartment and slightly loosen the clamping screw of the crane. Next, it will be easy to remove the cable from the crane lever.
Now you have crept directly to the crane itself, unscrew the screws that hold it. Depending on the configuration of the oven radiator, the quantity may vary, and nuts can be installed instead of screws.
Remove the faucet, remove the branch pipe from it, also having previously unscrewed the nuts.
Masters only recommend using a little trick. When attaching the faucet to the radiator, the nuts are very often unscrewed, respectively, they are lost during the movement of the car. To prevent such "losses", it is recommended not only to tighten the nuts, but to first put them on plasticine.
So, the process of modernizing the heating system can be carried out by anyone, and in gratitude he will receive comfortable conditions inside the cabin even at those moments when the frost is fierce outside.
Every Niva owner knows that the stove is one of the most serious flaws in this car. The Niva 21213 stove, like any other Niva, has two drawbacks at once, each of which is critical in terms of comfort.
- Increased noise. During operation, the heater fan makes annoying and shrill sounds that annoy the driver;
- Low performance. Even in the maximum power mode, the interior does not warm up well, and in severe frost, the stove does not cope with its functions and the windows freeze, worsening the driver's view.
The disadvantages also include only two positions for adjusting the blowing power. This is especially felt in the fall - in the minimum mode, the interior does not warm up, and in the maximum mode it is too hot.
Alternative to the stock stove
An excellent alternative to the standard stove VAZ-21213 is the stove from the G8. Unlike the Nivovsky one, it is completely silent in operation, warms up the interior perfectly and has several speeds, which provides more options for choosing the airflow range.
Modernization can be carried out in two ways: on your own or by purchasing a ready-made complete set of the heater.
Self-installation of a new stove
Despite the fact that the eight heater fits the Niva, you still have to sweat a little to install it - the products of the domestic auto industry do not mean that some part is simply replaced without effort. It will definitely need to be sharpened, drilled, redone, and so on, so that all the details become normal.
To the stove from the VAZ-2108, you should immediately purchase a new resistor, switch and "snail". The procedure is as follows:
- Try on the engine from the new stove to the air duct and cut out a new mounting hole. The engine should be installed so that it does not rest against the hood, so try to put it deeper into the air duct;
- Take the wire out of the box, carefully fasten and seal the engine itself;
- Cut out a plate from stainless steel to be installed under the nozzle;
- The top opening also needs to be closed;
- Remove the standard valve, as it will not be needed in the new stove;
- Install the air duct in place.
If there is no desire to engage in design, you can purchase a ready-made kit assembly. It includes a volute, a housing with an already prepared seat for the engine, a rheostat, a speed switch, a set of wires, as well as fasteners and sealing connections.
Heater (stove) and ventilation system
heater
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1 - side nozzle; |
12 - crane; |
Heater operation scheme
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1 - air distribution cover; |
11 - windshield heating air duct; |
The ventilation system is supply and exhaust. When the car is moving, air is forced into the passenger compartment by natural pressure through the air intake slots on the hood and is sucked out through the holes in the rear roof pillars. To increase air circulation while driving, you can lower the windows of the front doors, and at low speed, turn on the electric fan. Air flows in the cabin are distributed by air ducts located inside the dashboard. Air enters the windshield through the upper slit-like nozzles on the instrument panel, on the side windows - through the side and, partially, central nozzles (with air flow guides), to the legs - through the holes in the heater casing (with the cover open). To control the distribution of air flows, the middle and lower levers on the center console of the instrument panel, as well as the guides of the central nozzles and their regulators, are used.
The heating system (stove) is liquid, combined with the engine cooling system. The heater radiator is installed in the instrument panel console in a plastic casing and sealed around the perimeter with foam rubber. Air heating depends on the degree of opening of the valve that regulates the flow of fluid through the radiator. The valve is installed at the radiator inlet and is controlled by the upper lever on the center console.
The ME-255 fan electric motor is a collector, direct current, with excitation from permanent magnets. The fan speed is controlled by a three-position switch on the instrument panel. Depending on the selected speed, the electric motor is connected to the vehicle's on-board network directly (high frequency) or through an additional resistor (low frequency). The frequency of rotation of the motor shaft with an impeller at a voltage of 12 V and an air temperature of 25 ± 10 ° C is 3000 ± 150 min -1. Consumed current at maximum speed - no more than 4.5 A.
The fan impeller is fixed on the motor shaft. The electric motor cannot be repaired; if it fails, it is replaced.
If water enters the cabin through the stove
How to increase the heating of the heater (instead of the second stove)
(advice from S. Lissitzky)
On my Niva VAZ-21310 in winter, at low engine speeds, the heater does not cope with heating the interior. To improve the circulation of fluid in the stove radiator, I installed an additional bleed pump from the Gazelle. To do this, I bought two hoses for the heater from the Zhiguli and four clamps. The pump was fixed in the engine compartment and connected to the heater supply hose. The pump can be powered from the heater fan control key. Or install a separate switch by connecting through the fuse to the ignition switch.
Video
Do-it-yourself alteration of the stove on Niva 21213 is necessary in case of a malfunction in the car's heating system. It is not worth delaying with this, because uneven thermal regulation leads to misted windows or icing. In any of these cases, the visibility of what is happening on the road worsens. A malfunction causes wear of individual elements of the device or a factory defect.
Troubleshooting
It will be necessary to remake the stove, supplied as standard, for preventive purposes. The procedure will not take much time, but it will prevent many problems in the future. Driving experience suggests that the first severe frosts will undermine the "health" of the device. The list of major weaknesses is as follows:
- the optimal operating temperature range of model 2121 is from -5 to +10°С;
- inability to warm up the air in the cabin if it is -8°C or lower outside;
- with an increase in blowing power, there is no increase in temperature;
- when driving in 2nd gear, the noise from the Niva stove becomes significant.
That is why it is better to take the necessary measures in advance. The driver has few alternatives. On the one hand, everything remains in its place. The heating device is used at minimum power. During mild winters, this is still tolerable, but with the advent of real cold weather, conditions will become unbearable. On the other hand, it is easy to spend a few hours to correct the situation.
Further development of events is as follows. If the heating in the car is running at ½ power, you can limit yourself to minor repairs. The main thing is to make sure that there are no noises and extraneous knocks, otherwise Niva 21213 should immediately go for a technical inspection.
The presence of an unpleasant sound accompaniment indicates the need to replace the device. In a specialized trading network, ready-made versions of heating mechanisms for the Niva are presented. If desired, one is assembled independently.
The second option is considered more preferable. With self-assembly, it is possible to literally personalize the stove. To do the work yourself, you will need to visit a specialized store or market to buy spare parts.
When buying, original parts or analogues are selected. The main thing is that they have a certificate of quality. Otherwise, they cannot be placed. It would be useful to rewrite the technical data of the vehicle so as not to exceed the parameters recommended by the manufacturer.
Technical details of the procedure
The efficiency of the new heating system at the Niva will be determined not by the cost of the purchased parts, but by their quality. For work, you will need the following elements: a car resistor, a heater of eight and a “snail”. It is a mistake to believe that only "native" spare parts are suitable for repairing a heating device. The main requirement is technical compatibility.
If in doubt, the drawing of the heating system will clarify. The further course of action is as follows:
- Cut out a new mounting hole. This is done carefully, because the reliability of the heating system depends on the quality of the preparatory process. It is recommended to place the engine in the air duct as low as possible, otherwise the device will rest against the hood. This should not be allowed, otherwise the stove fan will not last long.
- Slowly remove the motor power from the air duct. For this, an outlet is used.
- Proper installation means that the motor is securely fixed in the air duct. After that, all attachment points, without exception, are sealed with automotive sealant. It is highly recommended not to miss anything. Otherwise, due to vibration loads and the influence of external factors, the connection diagram of the stove will be violated.
- Take 2 stainless steel plates that adapt to the size of the nozzle and the top opening. Measurements are taken several times. Pedantry will eliminate the need for subsequent refinement.
- Using a wrench and a screwdriver, the valve installed by the manufacturer is removed. Tools must be used carefully. One careless move is enough for 21213 to require costly repairs.
- It is recommended to abandon another heating device in the car. The second stove will not add heat, but the load on the “engine” will increase several times.
- The process ends with the installation of a new duct with the engine.
The heating system of a new sample is checked by trial inclusion. It is recommended to smoothly switch modes. On each of them, the device should be at least 5-7 minutes. The task of the driver is to make sure that the operation of the system is not accompanied by extraneous noise and vibration.
As mentioned earlier, such a choice does not affect the quality of the heating system. At the same time, car mechanics make several reservations. For those who plan to use VAZ stoves, it would be useful to check the power system. Some versions are different. That is why all actions are consistent with the drawings.
It is allowed to use the VAZ 2108 heater, subject to two recommendations. Firstly, the landing socket is 1-2 cm larger than the size of the device. Additional area will reduce vibration impact. Secondly, the switch is installed taking into account the specifics of the VAZ heating system. Less fiddling around when minor system tweaks are needed.
The ventilation system is updated in 1-2 hours, depending on the degree of engine wear.
If the “snail” installed by the manufacturer has no signs of physical wear, it is only necessary to replace the heater “engine” itself.
Worse, if the factory equipment of the Chevrolet model has manufacturing defects. A complete replacement of the device is recommended. This will save time.
The operation of the heating system determines the comfort and safety of the ride. The driver constantly monitors the efficiency of the system. In the event of extraneous noise, it is necessary to urgently carry out a technical inspection.
