Replacing the heater radiator Niva 2121

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.

Modernization of the Niva stove

Before installing the fan, I asked myself some questions, some were answered by this site and many others. The rest was figured out during repairs and visits to auto stores of different models. To upgrade the air intake, you will need all the remaining material that you cut, so don’t throw away the plastic and use a ruler and caliper before work.

What was and what has become.

The partition crashed from part photo number 1

Shown here is the location of the drainage system in case of rain.

Sealing rubber from VAZ 2104

Inside, before foaming, I sealed the edges with foil tape (does not corrode).

Let's start installing the fan control resistor at four speeds. We make a hole in the bottom cover (so that the resistor fits and does not touch the fan)

We make a lid from plastic leftovers to cover the resistance.

Cut a hole for the resistor itself (resistance)

And the final photos.

Installing the engine from the VAZ 08 stove on the Niva VAZ 21213

Removal of the interior heater radiator and its activation valve on a VAZ 2121 and Niva 2131 is carried out to replace it if its seal is broken, that is, for subsequent repairs or complete replacement with a new one, as well as to replace the valve. To carry out repair work, prepare a standard set of tools and perform the following sequence of actions:

Drain the cooling system with the heater radiator valve open.
Next, remove the hoses from the heater pipes and the seal.
We remove the heater fan.

We take out the radiator with the tap, and then use a ten key to unscrew the two bolts securing the tap itself.

We remove the tap.
Next, remove the nuts of the tank mounting bolts from the grooves of the tank.

On the opposite side, unscrew the two bolts and remove the outlet pipe along with the rubber sealing gasket.
Carry out the necessary replacement, then assemble and install in the reverse order.

At this point, the repair work to remove the heater radiator, its tap and pipe on the VAZ 2121 and Niva 2131 cars has been completed.

Sources

https://www.vazdriver.ru/snyatie_i_zamena_i_ustanovka_ventilyatora_pechki_na_nive_vaz21213_i_vaz21214.html
https://spike.su/index.php/Pechka-NIVA.html
https://remont-vaz2106.ru/kak-snyat-radiator-otopitelya-s-kranom-vaz-2121-niva-2131

Replacing the stove radiator

The heating system is quite reliable, but like everything reliable, it comes to its end. Most often it goes to the pipes and taps ; the heater radiator may be the last to leave the distance. Niva VAZ 2121 and its modifications 21213 and 21214 are no exception and problems with the radiator may await them too. Therefore, it is better to prevent a problem than to encounter it in a field on a frosty night.

A sudden cold snap in the Niva’s interior does not mean that something urgently needs to be changed or repaired. For diagnostics, it is not necessary to go to a service station; you can find out everything yourself with a simple set of tools and a head on your shoulders. Actually, the lack of warm air in the air ducts can be the result of several malfunctions:

air lock in the heating system;
clogged air ducts;
inoperative or malfunctioning heater motor;
clogged heater radiator.

A clogged air intake may come as a complete surprise to the driver. This is especially true for the Niva, which is off-road friendly. Dust, leaves, branches, and other gifts from the forests that are absolutely not needed there can get into the air intake. A faulty heater motor will make itself known immediately, but the radiator will warm up properly, and if it is clogged or leaking, then a replacement is in order.

Before replacing the radiator of the Niva stove, you should think a hundred times whether it needs to be replaced with a new one. It may be better to clean or solder the old one, since a conveyor product is always better than a part from the spare parts stock. Although, it depends on the year of manufacture of the car. In principle, there is no special choice of heater radiators by type - there are only copper and aluminum models. The debate about which one is better will never end, because copper and aluminum are completely different metals with completely different characteristics.

And if we talk about prices, then copper is, of course, more expensive. Its price can be within 2.5 thousand rubles, while an aluminum one will cost no more than 1800. An aluminum heat exchanger has another good ability - it heats up quickly. Perhaps these are all its advantages. The copper part heats up longer, but at the same time:

retains heat longer; copper has a high thermal inertia;
copper is quite elastic and does not crack at the seams as often as aluminum;
a copper radiator can always be restored, repaired, cleaned, soldered, but an aluminum radiator cannot.

Replacing the heater core is quite simple, although it may take half a day. That is why we focused on the quality of spare parts, so as not to redo the work several times. All you have to do is stick to the technology, collect all the screwdrivers you have in the garage (preferably with a short blade), be patient and begin a step-by-step replacement:

Drain the antifreeze from the main radiator and cylinder block, although if the system is sealed, it is enough to close the heater duct.
It is better to protect the interior from antifreeze, since some of it will inevitably end up on the floor mats.

Dismantling the center console, the shelf under the glove compartment and it would be nice to remove the gear shift lever will be in the way.
You can remove the lower air duct with it, but it’s more convenient.
Unscrew the screws securing the radiator bracket.
Loosen or unscrew the screws securing the front panel on the right and left; there is no need to remove the entire panel.

Remove the rods from the stove tap, dismantle the casing with the fan.
Dismantle the heater radiator, first carefully removing the pipes and draining the antifreeze from them .

The new radiator is installed in the reverse order, after which you need to make sure that no air lock has formed in the system. This way you can save at least 2,500 rubles, which would have been charged for this work at the service. And for this money it is better to buy a high-quality radiator that will last another ten years.

Fan replacement

Experienced car owners recommend not stopping there and continuing to modify the stove by tuning the fan.

Some people suggest getting rid of the fan installed by the manufacturer and installing a figure eight fan instead.

If you also decide to carry out such a replacement, you need to additionally decide whether you will leave the original control of the stove or also replace it with a “eight” analogue.

Having decided on the second option, take care of purchasing the following additional items:

fan speed switch;
additional resistor for the stove.

So, after you have completely prepared all the necessary components, you can proceed directly to the process of modifying the fan.

Initially, you should dismantle the old air supply box. Unfortunately, despite the fact that this requires unscrewing only four nuts, it will not be possible to do this without outside help. Your partner will need to hold the screws under the hood while you unscrew them using a wrench.

After this, you can easily remove the air intake. Clean it if it needs it, and then cut away a small amount of the plastic to provide enough space for the new fan to operate.

Install the fan and carefully inspect for anything that may interfere with the operation of the installed fan. If you find such obstacles, carefully cut them off.

Once you are sure that there is nothing else that can prevent the fan from working, secure it with 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 fastened 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 fine, reconnect all wires and install new controls. Upon completion of the work, be sure to check your results in action.

The stove should work perfectly, and warm air should spread very quickly inside the car.

VAZ 2121 (Niva 4x4): replacing the heater radiator with your own hands

The operation of the stove on the classic Niva traditionally causes complaints from most owners of this car. A frankly weak but noisy fan and poor design of the air ducts do not warm the interior properly. In addition, the operation of the heater is affected by the operation of the VAZ 2121, 2131 in difficult road conditions. The stove radiator, air ducts become clogged, and the pipes are destroyed. Therefore, understanding the operating principles of the heater and the ability to repair it with your own hands become an important task for the Niva driver.

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.”

Radiator of the Niva stove

The heater radiator of VAZ 2121, 2131 is not a critical vehicle component. But in cold weather, driving a car with a faulty heater is unlikely to be a pleasure. In addition to the sheer coldness in the cabin, the windows may fog up, which leads to poor visibility, and this is a matter of safety for the driver, passengers and other road users.

Structurally, the radiator is a heat exchanger, or more simply put, a battery, whose task is to heat the air passing through its grille. Externally, it looks the same as a similar unit on other cars.

The same type of heater radiator is used for “Niva” and “classic” VAZs

The Chevrolet Niva radiator is not suitable for the VAZ-2121, 2131 family. This should be taken into account when selecting spare parts in the store.

Radiator location

The heater radiator on the Niva is located under the dashboard behind the center console between the driver and right passenger seats. This is the standard location for the heater in most cars. Compared to many other car models, access to the radiator in the Niva is quite simple. This will take about 10–15 minutes for a semi-skilled specialist.

The radiator of the Niva stove is located in a plastic casing under the center console

Radiator design and functions

The stove radiator is a unit in which heat is transferred from the heated liquid to the surrounding air. It consists of two horizontal rows of tubes intersecting with vertical metal plates (ribs). On the sides, the structure is limited by panels that provide the functions of tanks. The incoming and outgoing pipes of the cooling circuit are connected to one of the tanks.

There are two unconnected cavities inside the tank. Antifreeze enters through the inlet pipe into the cavity connected to the upper row of tubes. On the other side of the radiator there is a return tank, through which antifreeze flows into the second row of tubes and moves in the opposite direction to the second cavity of the tank and the outgoing pipe. After leaving the radiator, the antifreeze enters the main cooling system of the car. Antifreeze circulating in the tubes ensures heating of the entire grille, thanks to which heat transfer from the radiator reaches maximum effect.

The radiator is installed in the instrument panel console in a plastic casing and sealed around the perimeter with foam tape. Air heating depends on the degree of opening of the valve that regulates the flow of liquid through the radiator. The valve is installed at the radiator inlet and is controlled by the upper lever on the center console.

Cold air comes from the external environment, passing through a hot radiator, heats up and enters the car interior

The main and only function of the heater radiator is to heat the air flow entering the cabin through the air ducts.

Radiators are made of aluminum or copper. The aluminum product does not hold temperature well. A copper radiator works more efficiently, but is more expensive. The advantages of a copper radiator include its maintainability: the ability to seal cracks in the tubes.

The radiator is leaking: what to do, how to find the leak and how to fix it

The cooling radiator is the main element of the engine cooling system.
The operation of a cooling radiator is the active transfer of heat into the atmosphere from the heated coolant. This process is important for efficient engine operation, because The coolant, before giving off heat in the radiator, takes this heat from the heated components and parts of the engine. This was originally intended by the designers, but life makes its own adjustments to the operation of the car on the road. A situation when the arrow on the dashboard begins to treacherously creep up, and, unfortunately, this arrow is not an indicator of the fuel level, but an indicator of the coolant temperature, modestly indicating that the car is starting to overheat. Steam is pouring out from under the hood, and a liquid stain of coolant is slowly but surely spreading on the asphalt. The radiator is leaking, what should I do?

Causes of radiator leaks in the car cooling system

Before you do anything, you need to figure out what led to this result. This may be external damage as a result of stones, or the plastic elements of the radiator may crack as a result of an impact in a minor accident. Such minor damage, as a rule, cannot be immediately identified, and problems arise from them over time. In the meantime, the driver continues to operate the car, gradually, drop by drop, losing coolant from the system.

What is the danger of antifreeze leaking from a car cooling system?

As the coolant level drops, the risk of engine overheating increases, which in turn can lead to the following problems:

Deformation of the plane of the cylinder block or cylinder head

Cylinder head gasket deformation

· Changes in the configuration of the cooling system and associated failure of system components

All of the above cases will lead to expensive repairs.

What to do if the cooling radiator is leaking

The first rule in this case is to monitor the coolant level.
In fact, periodically checking the vehicle's technical fluids before a trip is a good rule; this will help to promptly notice an emerging problem and eliminate it. Even if the cooling radiator leak is small, do not underestimate the scale of the current situation. Over time, radiator leakage will increase, and this point can be overlooked. The driver will not like the result.

Therefore, if such a situation occurs, it is necessary to have a supply of coolant or distilled water. Yes, if the loss of coolant is small, then for the first time you can use distilled water, but you need to take into account that the more distilled water gets into the system, the more we increase the freezing point of the coolant. Therefore, if it’s winter outside, you shouldn’t get carried away with distilled water, but add coolant.

What to do in case of major damage and leakage of the cooling system

If there is serious damage to the engine cooling system, repairs are inevitable; operating the vehicle in this case is extremely undesirable. And in order not to end up with engine repairs, you should move the car to a technical center using a tow truck, or, in extreme cases, on a cable.

How to seal plastic parts of a cooling system with a leak

If the design of the radiator allows, then you can use a heat-resistant sealant-adhesive, better known as cold welding. In some cases, you will need to remove the radiator from the car.

Cold welding is a special two-component sealant that may contain metal shavings. Such sealants allow you to quickly restore plastic or metal parts.

The gluing process itself is not complicated:

· Before applying the sealant, the surface must be prepared, cleaned and degreased.

· Prepare the sealant for use by mixing the two components. The components must be thoroughly mixed to obtain a homogeneous mass.

· The sealant is applied to the part.

The composition will set in 3-5 minutes, but until complete hardening it will take from an hour to a day, depending on the composition.

Is it possible to solder aluminum radiators and how to do it correctly

If a radiator leak occurs on an aluminum part, then sealing is possible.
The process is complicated, and we would recommend entrusting it to professionals, because... If the attempt fails, you will have to redo everything again. · You will need a powerful soldering iron and it must be warmed up well before work.

· The walls of the radiator will also need to be thoroughly heated.

· Clean the surface thoroughly before soldering.

· To ensure good soldering quality, it is necessary to use solder with a high tin content.

This method will require removing the radiator from the car, which means that when installing the radiator back after repair, it is advisable to completely replace the coolant.

Repairing antifreeze leaks in the cooling system using a special sealant

There is another way to eliminate a radiator leak that does not require partial or complete disassembly of the system. This is a sealant that works inside the cooling system. For example, Liqui Moly - Kuhler-Dichter cooling system sealant. This product seals small leaks in the radiator, metal porosity in solder areas, and hairline cracks. Seals damage that is quite difficult to localize (determined only by a drop in the coolant level). You can use the product with all types of additives in the cooling system and any antifreeze. Suitable for all cooling and heating systems.

Contains water-soluble monomer and plastic chips suspended in a monoethylene glycol solution. When there is a pressure difference and when oxygen is available, the polymerization reaction is activated and the polymerization products seal the coolant leaks.

Application of the sealant is very simple:

· Shake the can before use.

· Add sealant to the cooling system at the rate of 250 ml. additives for 10 l. coolant.

· Let the engine idle or drive the vehicle for at least 10 minutes.

The sealant can remain in the cooling system for the entire service life of the coolant.

To avoid major repairs, you should regularly check the cooling system for the slightest malfunctions and leaks, change hoses and pipes in a timely manner, and monitor the temperature of the antifreeze during operation. Also, do not forget to change the coolant in a timely manner, as over time it loses its properties, which can lead to malfunctions in the operation of the entire system.

Typical radiator malfunctions

There are two main radiator malfunctions:

Clogged grille and radiator tubes.
Radiator leakage.

Since the Niva is often operated in difficult road conditions, the likelihood of contamination of the grille from dusty outside air is very high. Clogging of the cells reduces the heat transfer area of the radiator, and as a result leads to a decrease in the heat released from the air ducts into the passenger compartment. In such cases, the stove radiator is dismantled and washed under high pressure.

Clogged radiator tubes are also common. If the outlet pipe is barely warm or cold, then the radiator tubes are clogged. This happens for various reasons, including the entry of foreign objects into the cooling line during repair work. In such cases, the tubes themselves are also washed. To do this, it is not necessary to remove the heater radiator. It is enough to separate the radiator pipes from the cooling system and supply water under pressure into one of the radiator pipes.

A leak in the radiator tubes can be determined by a coolant leak, which usually forms on the right side of the center console in the passenger foot area. As a rule, a leak is accompanied by the smell of antifreeze (antifreeze) in the cabin. Don't rely on the smell of antifreeze alone. Coolant vapor is very volatile and can be misleading as to the source of the leak. The smell of antifreeze also indicates a leak in the engine compartment.

The leakage of the heater radiator occurs due to natural wear and tear of the metal from which it is made. Constant cycles of heating and cooling, exposure to various chemicals and consumable liquids eventually lead to the destruction of the metal and the formation of cracks. Cracks in a copper radiator can be soldered. The aluminum radiator will have to be replaced with a new one.

Typical malfunctions of the VAZ-2121 heater radiator can be eliminated in a garage environment

Possible heater malfunctions and ways to eliminate them

Cherry Niva Chevrolet

If the stove in a VAZ 21214 has stopped working, then, in principle, repairing it yourself is not a particularly difficult task.

The reasons for the malfunction why the Niva stove refuses to work are given below:

Failure of the additional resistor. This element of the system is located behind the glove box and is designed to control the ventilating device for pumping warm air into the cabin. The problem is solved by replacement.
Wear of pipes. Over time, the pipes begin to wear out, and temperature changes especially contribute to this. To detect worn hoses, each line must be carefully inspected. Wear may be indicated by cracks and other damage to the pipes through which antifreeze can escape.
The heater valve is faulty. A breakdown of this component may be indicated by traces of a coolant leak in the vehicle interior. If the heater tap is being replaced, it is better to use a ceramic device; its service life is usually several times higher than that of traditional metal devices.
Problems in the operation of the control unit. It is best to have this part repaired by a qualified electrician.
The heater radiator has failed. On Niva 21213 you can easily replace it with your own hands, we will talk about this below (the author of the video is the OWNER G channel).

It is very easy to find a broken fan resistor - the fan only runs at maximum speed.

Removing the radiator of the VAZ-2121 stove

The procedure for removing the heater radiator on a VAZ Niva does not require any special skills or abilities. It is important to prepare the necessary materials and tools in advance. Most instructions for repairing car heaters contain a recommendation to drain the coolant before starting work. In practice, many car enthusiasts limit themselves to draining only that part of the antifreeze that is located in the radiator itself and the nearby pipes of the cooling system.

Preparing tools

To replace the radiator, you will need the following tools:

pliers;
slotted screwdriver;
Phillips screwdriver;
a set of markers for identifying wires;
spanner set to “7”;
socket wrench set to “10”;
socket wrench set to “7”;
socket wrench set to "10".

Procedure for dismantling the radiator

All operations must be performed in the following sequence:

Unscrew the left self-tapping screw securing the storage shelf. The self-tapping screw is unscrewed with a Phillips screwdriver
Unscrew the two self-tapping screws on the right shelf fastening. The right side of the shelf is attached to the upholstery
Unscrew the central fastener of the shelf from the front panel. The central part of the shelf is unscrewed from the front panel
Carefully lower the right side of the shelf. The right edge of the shelf moves down freely
Remove the left side of the shelf from the center console panel. There is a special spike on the left side of the shelf
Unscrew the self-tapping screw securing the floor tunnel lining to the radio mounting panel. The lower part of the panel is also fixed with a self-tapping screw
Unscrew the screws of the left and right fastenings of the central panel. The process is shown on the right side, the left side is similar
Remove the radio panel. The panel is moved to the side
Disconnect the wire connectors from the radio panel. The wire blocks are detached to remove the entire radio panel
Completely dismantle the panel. After disconnecting the wires, the panel can be easily removed
In the engine compartment, loosen the clamps securing the hoses to the radiator pipes. Loosening the clamp is shown using the example of the lower pipe; a similar operation is performed with the upper
Unscrew the screws securing the seal from the front panel. The screws are unscrewed with a socket wrench with a “7” head
Remove the seal. The removed seal allows you to remove the radiator pipes from the engine compartment
In the cabin, loosen the nut securing the crane drive rod. The fastening nut is unscrewed with a “7” key
Remove the heater valve drive rod. The rod is removed from the crane lever
On the right side of the fan casing, remove the heater tap rod from under the bracket. The rod is disconnected from the fan casing
Disconnect the spring brackets securing the casing. The staples are pryed off with a slotted screwdriver
Remove the casing and fan. The casing with the fan is moved to the side
Remove the radiator. After removing the fan, the radiator is carefully removed from its compartment
Unscrew the faucet from the radiator. The tap and pipes are turned off with a key to “10”
Remove the heater valve. The removed tap is checked for leaks
Remove the lower nut securing the faucet to the radiator. The bottom nut often falls out and gets lost

Disconnect the outgoing pipe.

The two fastening nuts are unscrewed with a “10” wrench

After dismantling, you should carefully inspect the radiator for blockages in the grille and leaks from the tubes. Based on the results of the inspection, a decision is made on the possibility of repair or installation of a new radiator.

Video: installing a radiator

The process of replacing the heater radiator on a classic Niva has been studied far and wide by many car owners. In fact, the procedure is similar to the entire family of AvtoVAZ classics. However, caution and safety precautions should be observed when working. After completing the repair, before driving on public roads, you must make sure that all components and mechanisms of the vehicle are operating normally. Only then should you begin daily use of the machine.

DIY tuning of Niva 2121 for off-road

Like many parts in the Chevrolet Niva, we change it ourselves, the radiator is no exception.

Points by which you can diagnose a breakdown of the Chevrolet Niva heater radiator:

the amount of antifreeze in the tank has sharply decreased;
reduction in the quality of heating of the car interior;
the appearance of a thick, greasy film on the inside of the glass;
there was a clear smell of antifreeze in the car;
accumulation of antifreeze under the driver's mat.

Having discovered any of them, you need to diagnose the Chevrolet Niva heater radiator in order to determine the next steps for repair or replacement.

Before replacing a spare part, the system is completely emptied of coolant. Replacing a Chevrolet Niva heater radiator without air conditioning will not cause any difficulties and does not require special skills. You can carry out the work of replacing a Chevrolet Niva heater radiator even on a simple overpass.

If you cannot adjust the position of the regulator, the cable may have broken. For replacement, a typical set of wrenches or ratchets and a flashlight will suffice. It is most convenient to use a headlamp; this will allow you to repair the stove without difficulty.

Sequencing:

The driver's seat moves back as far as possible. Unscrew the bolts and handles located on the control panel. The panel is dismantled from the driver's side, i.e. at the bottom left. The latches that secure the cables are disconnected. To remove the cable, the fan damper is dismantled. When installing a new cable, pay attention to the fact that its ends on both sides must be twisted into a ring and securely fastened.

Assembly is carried out in reverse order

At the end of the work, it is important to make sure that the cable is working properly by checking

A little lower you will find a bracket holding the shell of the damper drive rod. You need to carefully pry it off with a screwdriver. Do the same with the other rods, ensuring that the control unit is completely disconnected.

You also have to disassemble the control unit when you discover that the heater of your Chevrolet Niva does not work or works with serious problems.

Very often the electronic control unit for the stove installed on your Niva fails. In this case, you will still have to turn to qualified electricians for help, since you can remove the unit, but you cannot identify the cause of the problem. To carry out such work, it is very important to have various tools, instruments, testers and devices, and it is also important to have good knowledge of electrical engineering.

So, if you are unhappy with the way the stove works on your Chevrolet Niva, you don’t like the fact that the car’s interior warms up slowly, then act boldly, look for the reasons, solve problems, armed with tips and necessary instructions, and enjoy the good performance of your car.

Replacing the heater radiator (heater)

We drain the liquid from the cooling system with the heater tap open (see here).

We remove the hoses from the heater pipes and the seal (see here).

We dismantle the heater fan (see here). In this case, the negative wire of the electric motor does not need to be disconnected.

We take out the radiator with the tap.

Using a 10mm wrench, unscrew the two bolts securing the faucet to the radiator.

We remove the fastening nuts from the grooves of the radiator tank (for radiator mod. 2105).

Using a 10" wrench, unscrew the two bolts (for the radiator mod. 2101 - two nuts) securing the outlet pipe...

...and remove the pipe with the gasket.

We assemble and install the heater radiator in the reverse order. We fill the engine cooling system with liquid and check the tightness of the connections.

Checking the serviceability of the heater radiator

It happens that the radiator gives off hot air only in the first few seconds after the heater fan is turned on, and then the air remains barely warm. The malfunction may be caused by the displacement of the rubber partition, which divides the tank into two parts. To check, drain the coolant from the cooling system. Place the radiator removed from the car vertically, with the pipes down. We connect a hose with water from the water supply to one of the pipes and slowly let the stream flow. On a faulty radiator, water will immediately run out of another pipe. A working radiator will fill up, become noticeably heavier, and only then will water flow from the other pipe.

How to replace the heater radiator on a Niva

The quality of heater radiators on VAZ SUVs is a fairly relevant topic and worries many car owners; the interior of these cars with a standard heating system is not always warm. In addition, the “native” heater radiator of Niva cars may leak over time, and then it has to be replaced.

1 Types of radiators for the Niva stove
2 (adsbygoogle = window.adsbygoogle || []).push(); Removing the radiator of the Niva stove
3 Replacing the Chevrolet Niva heater radiator
4 Heater radiator with air conditioning Niva Chevrolet (replacement)

In this article we will look at what types of heater radiators (HR) there are on VAZ 4x4 cars, how you can replace the RF on the VAZ 21213 and Chevrolet Niva models.

Lada 4×4 3D Karabas › Logbook › Moving the radiator to Niva 2121

Well, I finished this upgrade on my war horse! Moving the radiator to the place of the spare tire (under the hood). Many of you will say that this is complete nonsense, why, etc. Let's consider the advantages (if you disagree, speak up! 1) When moving the radiator, space is freed up for the winch. 2) In the event of an impact (against a tree, stump, stone, etc.), the radiator will not be damaged and you can at least sit in a running, warm car (waiting for help if your car cannot move on its own). 3) It doesn’t get clogged with dirt (and if you managed to get it clogged with dirt), then it’s easy to wash and blow out. 4) The radiator in this position becomes higher than the heater radiator (due to this, it is hot in the cabin when the heater is on). 5)… ITD…

Types of radiators for the Niva stove

It doesn’t immediately become colder in the Niva’s cabin – the stove stops working normally for several reasons:

the heating tap does not switch (stays sour in the closed or half-closed position);
The motor rotates at low speed;
the heater radiator is clogged;
an air lock is created in the cooling system;
parts turn out to be defective;
the valve in the thermostat opens prematurely;
poor circulation is created in the cooling system due to the water pump.

It may still be cold inside the car due to a blown cylinder head gasket in the engine. To make the interior warmer, car owners often install on Niva 21213 cars:

three-row copper radiators of the stove, they have better heat transfer;
The heater motor is 2108, they are more efficient than the standard ones on the Niva.

RP for the VAZ 21213 is produced by various companies, and the quality of stove radiators may vary. On the auto parts market you mainly find parts from manufacturers:

"Orenburg radiator";
luzar;
DAAZ;
SHAAZ;
"Likhoslavl Radiator Plant";
Iran;

Based on the material used, RPs can be made of copper or aluminum, each of them has its own advantages and disadvantages. Aluminum radiator:

heats up quickly;
cheaper than copper;
has high rigidity and low weight.

But aluminum RP is not repairable, it is practically impossible to solder it. Other disadvantages of aluminum include:

rapid cooling, this metal does not retain heat well;
susceptibility to corrosion, which is why aluminum RPs fail more often than copper ones.

The main disadvantage of copper RP is that it takes a long time to heat up the interior, but even after stopping the engine, it retains heat for quite a long time. Copper heater radiators are approximately 30-50% more expensive than aluminum ones, but this is not so important - in general, the parts are still relatively inexpensive. The problem with copper RPs is different - the quality of the products is low, and it is not so easy to buy parts of acceptable quality.

Chevy Niva car owners often have problems with heating the interior; the car can be cold even in frosty temperatures of -15? C - the aluminum radiator of the stove does not heat very well. Another problem on VAZ 2123 cars is that stove radiators often leak.

Aluminum heater radiators on a Niva car are inexpensive:

VAZ-2123 (Chevrolet Niva) - on average from 700 to 1000 rubles;
VAZ-21213 (21214/2105) - from 650 to 1100 rubles.

Copper RPs are sold more expensive, their prices range from 1,500 to 2,500 rubles, the cost depends on the brand of the product, the region of sales and the sellers themselves.

Removing the radiator of the Niva stove

The heater radiator on the Niva 2121/21213/21214 is quite easy to change, but it is inconvenient to get to. We remove the RP as follows:

drain the antifreeze from the radiator and cylinder block;
we spread rags on the floor on the front passenger side, a little antifreeze will still spill;
remove the shelf under the glove compartment;
from under the hood, unscrew the clamps and remove the heater pipes;
remove the draft from the stove faucet;
dismantle the heating system fan;
then we take out the RP itself.

VAZ 21213 models are standardly equipped with model 2105 heater radiators, but many owners of VAZ 4x4 cars install RP from Kopeika - 2101-8101060, with such a radiator heater the car becomes warmer. In order for the stove radiator to sit more tightly in the housing, it is covered with foam rubber around the perimeter to ensure a tight seal.

Replacing the Chevrolet Niva heater radiator

The main complaints that Chevy Niva car owners have about their stove heating system is a coolant leak from the stove radiator. Determining the malfunction is quite simple - the carpet on the floor in the front passenger area becomes wet, and the cabin smells of antifreeze. The cause of the leak could also be a stove faucet or a heating pipe, for example, a poorly tightened clamp, but the radiator itself also leaks quite often. Chevrolet Niva RPs are installed from the factory with aluminum, the parts are not distinguished by high quality.

We carry out the work of replacing the stove radiator as follows:

drain the antifreeze from the cooling system (including from the cylinder block);
unscrew the screws (3 pcs.), dismantle the right side of the glove compartment;

remove the glove compartment by disconnecting all the wires from it; it can be dismantled quite easily;

You should place some rags or a plastic bag under the heater radiator, because antifreeze will leak in any case;
unscrew the two clamps securing the stove pipes, unscrew the self-tapping screws securing the RP in the housing;
we pull off the hoses and move them as far as possible to the side of the body - this way they will not interfere;
then we take out the heater radiator itself;
we install a new RP in place, in some cases it is necessary to file or break the edge of the stove radiator body so that the part falls into place;
we install the pipes in place, tighten the clamps;
put the glove compartment and the side right plastic panel in place;
fill in antifreeze, start the engine, check for leaks through the RP or stove pipes;
If everything is in order, the replacement of the Chevy Niva heater radiator can be considered complete.

As you can see, on a Chevrolet Niva car without an air conditioner, replacing the air conditioner is not particularly difficult, but it is not possible to do the work that needs to be done on a car with an air conditioning system.

Instructions for replacing the stove

Replacing the radiator of the Niva stove is carried out as follows:

First, you should drain all the coolant from the heating unit and cylinder block; to do this, place a container under the drain hole and unscrew the cap. If you are sure that the entire system is sealed, then there is no need to drain the consumables, just turn off the tap.
The next step will be to remove the center console and the shelf under the glove box. For greater convenience, you can also remove the gearbox lever, since it will get in the way.
After completing these steps, you can remove the lower air duct. It is not necessary to remove it, but doing so will make your repair much easier.
Next, you need to unscrew the bolts that secure the radiator assembly bracket.
After the bolts are unscrewed, it is also necessary to loosen or completely unscrew the screws securing the front panel on the left and right sides. It is not necessary to completely dismantle the panel.
Then you can remove the rods from the faucet of the heating unit, after which you can remove the casing with the fan.
At the final stage, the radiator device is removed, but before that you need to disconnect and dismantle the pipes. Be careful, some coolant may remain in them. The new radiator assembly is mounted in place of the old one, further assembly is carried out in the reverse order, making sure that there are no air pockets in the system. Otherwise, the efficiency of the stove will be minimal.