The heater valve (“stove”) of VAZ 2108, 2109, 21099 cars is leaking

What is hidden under the panel in the car interior?

The “refrigerator effect” becomes most noticeable if you still continue to use old VAZ models with front-wheel drive: 2108, 2109, 21099. Let's try to figure out whether there is any possibility of replacing the heating system yourself. Despite the visual identity of the car models, there is still some difference in these VAZ units of the 8th and 9th models.

This difference is not fundamental. It’s just that in the process of evolution, unnecessary air ducts were removed from the design, the shape of the damper and the location of the radiator were changed. But this does not change the principle of operation. The interior is heated by air, a radiator connected to the engine cooling system is responsible for heating it, and the heater itself is located under the instrument panel in the car, which is higher in the VAZ 21099 due to some design features of the stove. With the help of connected air ducts, heat flows into the interior.

Radiator in the engine cooling system

To force heated air into the cabin, a fan is located at the top of the heater, which rotates using an electric motor. The easiest way to access it is from the engine compartment. The heater radiator, mentioned above, is located in the VAZ 2109, 2108 and 21099 models near the heater itself. It has a seal in the form of a polyurethane foam gasket and consists of two plastic tanks, cooling plates and tubes arranged in two rows.

Since heating is connected to the car’s cooling system, fluid circulation through the radiator occurs using the pump of this system. You can regulate its flow using the heater tap and various levers that affect the position of valves and dampers. Warm air enters the cabin through two central and two side nozzles, inside of which there are dampers that regulate the intensity of heating. The direction of flow is also changed by blades-blinds using levers in the cabin.

After the air in the cabin is heated, it is necessary to circulate it and maintain the set temperature. It is necessary to release the waste stream outside. In this regard, on VAZ 2108 models, hot air flows out through holes located in the central body pillars. On 9-model cars, these holes are located in the corners of the rear side windows and have rubber valves that prevent atmospheric air from entering the air ducts.

Heater radiator: how to replace and choose a new one

The heater radiator in the VAZ 2109, no matter how long and how well it works, always starts leaking suddenly.

Usually you notice either drops of antifreeze on the passenger mat if it begins to flow along the seams at the edges of the radiator, or they find antifreeze under the mats if it flows deeper - in the area of ​​​​the stove pipes or the faucet of the VAZ 2109 stove.

If such a thing happens, it’s time to think about replacing the stove radiator, as well as which new stove radiator to choose. This is what we will talk about today.

It should be noted that antifreeze flows from the edges of the radiator into the area of ​​the pipe clamps, so at first you might think that the connection between the lower pipe of the heater and the rubber hose is leaking.

There are several types of heater radiators for the VAZ 2109 - original aluminum, non-original aluminum and copper. A copper radiator is much more expensive than an aluminum one, but it can be soldered in case of a leak, and it is more reliable than an aluminum one.

Also, according to reviews, it is colder, and it is not available everywhere. Now let’s see how the original radiator differs from the non-original one. Firstly - the price.

The original costs at least 750 rubles, while a non-original may well cost 450 rubles.

Now let’s pay attention to the radiator plates: in the original one they are located much closer to each other - the heat exchange area is larger. Also, the edges of such a radiator do not bend so easily, and the design of the original VAZ radiator itself is stronger

Above is the original DAAZ, below is Fenox for 450 rubles. The difference is obvious. The edges were wrinkled when removed from the stove body

Therefore, with an original radiator, the air from the heater nozzles begins to warm up already at a coolant temperature of 60 degrees, while with a non-original radiator the heat will only reach closer to 90 degrees - you will freeze during short trips.

They increase its operating efficiency due to the fact that the coolant does not fly through the radiator under the pressure of the pump, but is slowed down by them and rotates, transferring heat to the radiator more efficiently.

I can’t say how to determine their presence in non-original ones, no one will let you disassemble the radiator when buying, but I think that they should rattle a little inside if you shake the radiator.

Therefore, I recommend only the original. Its packaging looks like this:

To replace the heater radiator on a VAZ 2109 according to the instructions, you need to remove the entire front panel. However, if you have a high panel, many do the following: You need to unscrew all the screws securing the panel to the car body, remove the steering casing and simply move the right edge of the panel into the cabin with the help of an assistant.

1. In this position, the heater radiator should pass just between the glove compartment and the glove compartment.
2. When using this method, I recommend moving the panel away carefully so as not to tear anything off; under the steering wheel there are bundles of wires from the ignition switch and alarm elements that can be attached to the panel; all this needs to be detached from it.

There is also this method, although you will have to cut up the instrument panel. You can make the bottom shelf removable, which prevents you from removing the radiator from the stove body. To do this, you can saw it off, and then attach it to self-tapping screws, and remove it later when replacing the heater radiator.

True, on injection machines, an additional block with a relay hangs under the bottom shelf, so the bottom shelf must be securely fastened. But changing the radiator is a pleasure!

Bringing the radiator to life

As a rule, it is not the entire system that becomes unusable, but only some part of it. The first signs that it is necessary to intervene are a specific smell in the cabin, the appearance of steam from the exhaust vents, and very rapid evaporation of coolant. First of all, you need to check the radiator. You should not bother with checks when the engine is running or has not yet cooled down. The problem most often lies in the radiator, in the area of ​​the heater tap or in the electrical circuit. Let's look at these weak points in more detail.

Replacing a faucet or electric motor is not the first step; first you need to carefully inspect the radiator for leaks. Then you will have to remove it and check the tightness. The radiator is removed in the following order. First you need to disconnect and (preferably) remove the car battery, completely drain the antifreeze from the cooling system and disconnect the wires from the sensor that turns on the fan motor. Then you will have to remove the fan casing fasteners, disconnect its bracket and wires, and tilt it to the side. This will allow you to remove the protective cover. All that remains is to disconnect all the hoses, slightly tilt the radiator to the side and remove it out.

Replacing the electric radiator motor

It should be noted that it would not be superfluous to replace the rubber shock absorbers located on the radiator holders.

After the unit is removed, it is necessary to put tight plugs on the pipes or holes (except one) to which they are connected. Through the remaining inlet it is necessary to pump air into the radiator. Just be careful: do not allow air pressure to exceed 0.2 MPa. After this, lower the radiator into a bath of water, preferably so that it completely covers it. If air bubbles appear, the seal is broken and replacement is necessary. If there are no bubbles, there is a chance that it is simply clogged. In this case, it is necessary to flush the device.

Replacing the heating valve on a VAZ 2109

Before starting work, let's decide on consumables and tools. Here they are:

• new furnace tap;
• a pair of steel clamps for hoses with a diameter of 20 mm;
• canister of new antifreeze (4 liters);
• metal brush to remove rust;
• a set of rubber gaskets for the heating tap VAZ 2109 (in case the old ones are worn out);
• silicone-based automotive sealant;
• a pair of screwdrivers: Phillips and flat;
• socket heads for 13 and 10;
• set of open-end wrenches.

Sequence of operations

First of all, you need to pay attention to two points. Firstly, it is most convenient to change the stove valve in the inspection hole. At least on an overpass. And secondly, before replacing the valve, the engine must be allowed to cool properly, and the antifreeze mode regulator should be set to the “hot” position. This will allow the antifreeze to completely drain from the heating radiator.

1. A container is installed under the car standing on the pit to drain the old antifreeze. The cap on the radiator is unscrewed and the coolant is drained.
2. Under the hood there is a pair of hoses attached to the faucet pipes using clamps. These clamps are thoroughly cleaned of dirt with a wire brush. If they are very rusty, you can use WD40. Once the rust is gone and the bolts on the clamps begin to move, the clamps are loosened using a flathead screwdriver.

   
   As a rule, a lot of rust and dirt accumulate on the heating tap clamps

3. Inside, use a Phillips screwdriver to unscrew the screws holding the side panels.

   
   The side panel is held in place by two self-tapping screws, unscrewed with a Phillips screwdriver.

4. Access to the heating tap is provided. On the interior side there are two pipes with clamps. These clamps also need to be loosened. After this, the hoses are removed from the pipes (and this must be done very carefully: antifreeze may remain in the hoses, which will certainly spill onto the floor of the cabin).

   
   After removing the panel, access to the tap opens, you can loosen the clamps and remove the hoses

5. The faucet is secured with three 10mm nuts. They can only be unscrewed with a socket wrench. There is also a spring-loaded lock with a cable. The cable is detached manually.

   
   The faucet is held on by three 10mm nuts; they can only be removed with a socket head

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6. The old tap is removed from the niche and replaced with a new one. After which the elements of the VAZ 2109 heating system are reassembled.

   
   The faulty faucet has been removed from its niche - a new one can be installed

Video: changing the heating valve and radiator on a VAZ 2109

So, replacing the heating valve on a “nine” is a task that even a novice car enthusiast can do. All you need to do is follow the recommendations above and remember to drain the coolant before starting work.

Replacing the faucet and fan motor – can we do it ourselves?

If checking the radiator does not fix the problem, the cause is in the heater itself. The next common breakdown is a malfunctioning faucet. But even in this case, you will have to remove the entire device, since it is unlikely that it will be possible to determine the nature of the problem, and, most likely, only a replacement can help. First you need to disconnect the hoses from the pipes on the heater tap, unscrew the faucet fastenings and remove it. Then you should dismantle the rods going to this part, remove the facing panel on the floor and disconnect the air duct located in the tunnel. Next, all that remains is to remove the heater wires, unscrew the mounting nuts and remove the device. Naturally, replacement and installation are done in the reverse order.

Malfunction of the heating device tap

Of course, it is advisable to carry out all the operations described above for the first time under the guidance of an experienced comrade (if there is one, of course). Because it is very easy to miss some little thing in the circulation of pipes and nuts, therefore it will not be easy to find an error. By the way, if your friend is a good specialist in the field of heating systems, he will probably be able to give advice on how to get rid of the old-fashioned way of saving a car radiator by wrapping it in cotton vests or cardboard boxes. The fact is that the VAZ 2108 and 9 models have a drawback in the heating operation when the engine is cooled too much. And such an unusual radiator lining can, on the contrary, lead to overheating.

A more rational approach: an additional pipe is cut into the thermostat housing and at the same time a plug is placed on the opening of the water pump. Thanks to this engineering solution, the liquid from the heater flows to the thermostat, and then continues to move through its cycle. The thermostat will be part of the automatic cooling system, and you won’t have to worry about engine overheating in the summer or excessive cooling in the winter. This method has received a patent, and therefore such “tuning” can be officially ordered at a car service center if you decide to entrust the replacement of the system to him.

The motor in the heater, which is responsible for circulating heated air (via fans), can also break down. Replacing it is easier than repairing it, so you just need to buy the right one. Installation will not be difficult, since we have already disassembled the entire system according to the above instructions.

The VAZ 2108 stove fan, like other important parts, is the key to the car’s heating system. Like any other system, this one has its own nuances and can suddenly break down. The solution to some popular problems, even those related to replacing the product, can be found below in the article.

Tap selection

Before making a replacement, you must first select a new high-quality faucet that will serve you reliably.

The same crane is suitable for the VAZ 2108-09 models as for the VAZ-2113, VAZ-2114 and VAZ-2115. As for the factory tap, it is not of very high quality, since the membrane tap is entirely made of plastic. Therefore, VAZ owners begin to argue among themselves about which one to choose - some suggest that a plastic one will do, others say that a ceramic one will last much longer, and others even want to install a tap under the hood so that the problem with leaks no longer bothers them. Next, we will take a closer look at their types.

Types of cranes and their features:

1. Factory - the standard type of DAAZ faucet, which equips the VAZ 2108 and 2109 from the factory with a plastic membrane (part code 21080-8101150-00). Its main advantage is its affordable price. If we consider the aspect of reliability and frequency of jamming, then we may encounter some disadvantages. Experts do not advise buying such a faucet unless there are no other faucets in the store.
2. Ceramic - it is quite expensive when compared with the factory one, but it has quite high strength, it is also worth noting that its throughput is lower compared to the ball type. The most famous manufacturers of cranes are: Ulyanovsk YAVVA or LUZAR. The number of such a faucet will be 21080-8101150-12.
3. Ball - has excellent throughput, also has high reliability and strength, but they are usually the most expensive. They are manufactured by the following companies: Ulyanovsk Simbirsk Foundry Alloy and Chance-Auto. The article number of the ball valve is 21080-8101150-14. The disadvantage of the tap from the Ulyanovsk plant is that it is difficult to open, and this is a negative factor for the stop in the plastic drive mechanism of the valves and the tap at the places where the cables are attached.

If you make a choice between the options presented above, then the most optimal, taking into account all the pros and cons, will be ball or ceramic, but still with minor modifications.

Car heating system design

The 2108 heating system consists of the following components:

• draft, which affects the heater valve of the VAZ 2108;
• damper control lever;
• additional resistor;
• a motor that affects the rotation of the fan;
• system operating mode switch.

Heater valve VAZ 2108

Why do you need to change the valve on the VAZ-21099?

In most cases, the VAZ-21099 heater valve is replaced if it has serious malfunctions. In this case, two potential malfunctions are noted.

1. The faucet turned out to be “sour”. As a result, it is impossible to open or close it. In this case, you can postpone carrying out repair activities.
2. The second reason is that the stove faucet is leaking. This malfunction can cause significant trouble, so it should be eliminated urgently. If nothing is done, a serious leak of antifreeze into the car interior cannot be avoided. Despite the fact that the VAZ-21099 heater valve is hidden by a high panel, there is a risk of undesirable changes that will appear even in the situation in the car showroom.

For the reasons described above, you need to understand why you should change the faucet of the VAZ stove.

Operating principle of the stove

1. The liquid is heated to a certain temperature and enters the radiator of the VAZ 2108 stove.
2. To ensure constant circulation, rubber tubes are installed between it and the liquid cooling system, fixed for better fastening with clamps.
3. Warm air enters the car interior through several openings. The heater motor with its own fan is designed to distribute air evenly.
4. The air flows directly to the feet of the driver and passengers, and also exits to the panel. The heat flow is then delayed by the dampers, and therefore the air is cooled. Thus, cool air is supplied to the windshield.

If the operation of the furnace is not satisfactory, it can be modernized. This is done by installing fiberglass.

The action goes like this:

1. It is necessary to disassemble the stove, wash all parts and begin assembly. This action can also be used to visually inspect parts for damage. For example, the casing ear often breaks.
2. After this, you need to glue all the flaps and fill the seams with sealant. Glue the casing and wait a while until the sealant is stable.
3. Assemble the “insides” of the heating system and cover it with fiberglass. Thanks to this, the temperature will increase to 10 degrees.

Typical faults

As with any mechanism, problems can occur in the heating system (video author - Andrey Kuzemsky).

If the VAZ 2108 heater motor is broken, you can understand this by comparing some symptoms:

1. If the motor does not work when switching operating modes, the cause of the breakdown may be hidden in the resistor. When repairing, you need to replace the resistor with a new one, because it cannot be repaired.
2. If the fuse is blown, you need to check the insulation of the armature located on ground. There may be a short circuit.
3. If, when switching modes, the VAZ 2108 heater fan rotates at the same speed, this may be a consequence of contamination or oxidation of the collector. In case of repair, it is worth cleaning the collector and, if nothing has changed and the fan continues to act up, you can replace the bearings.

If the VAZ 2108 stove motor does not even show signs of life, then the reason is not in its design, but in a broken circuit. To find out if this is true, you can use a voltmeter.

DIY repair

To carry out repairs yourself, you need to use the following tools:

• a Phillips head screwdriver;
• 10mm wrench.

When dismantling, you need to remove the plastic trim, which is located on the outside of the windshield. To remove it, you need to open the hood and remove the 5 bolts that secure the trim to the body. Remove the rubber seal from the engine compartment and pry the casing with a screwdriver to get to the motor and oven fan. Now you can remove the motor. It is attached to the body of the VAZ 2108 with two bolts.

When the clamps are disconnected, you can turn off the power and disconnect the positive wire of the furnace under the dashboard. The negative one is attached over a special thread and pressed down with a special nut. You need to unscrew the nut by touch and fold back the negative wire. By disconnecting the wires, you can remove the motor and install a new fan. The entire structure is assembled in reverse order.

It is important to note that breakdowns associated with the stove also depend on which panel is installed on the VAZ - low or high. Both have their downsides. For example, on a high one the central flap does not open completely. It is she who is responsible for supplying cold and hot air to the car interior. To solve this, you need to adjust the damper. And to get to it you need to disassemble the dashboard.

If we talk about the low panel, this is where the thermostat often breaks. Of course, if it wears out, the oven will not work. It is recommended to change it every two or three years. And if replacement does not solve the problems, it is worth replacing the hoses that connect the stove and radiator.

Photo gallery “Stove removal and repairs”

In the photos provided below you can see in more detail how the furnace repair scheme occurs.

Removing a faulty device

...and remove the hoses.

DETAILS: Replacing the door lock cylinder of a VAZ 2109: algorithm of actions

First you need to determine whether your car has a low or high center panel. If the panel is low, then you are definitely out of luck. To remove it you will have to sweat.

• First, turn the front wheels so that they point straight ahead.
• Then open the hood, remove the negative terminal from the battery, remove the choke cable from the choke lever, and disconnect the speedometer cable from the gearbox.
• Remove the stove faucet handles.
• We take out, by pulling towards ourselves, the electric fan switch handle.
• Unscrew the 4 screws securing the beard trim and pull it towards you.
• We disconnect all the plugs, having previously marked or remembered which connectors they will need to be inserted into later.
• Unscrew the 4 screws securing the stove control panel.
• Unscrew the 2 screws securing the instrument panel visor and remove it.
• We squeeze the clamps of the instrument panel and remove it from the dashboard.
• Disconnect the speedometer cable, all plugs and fittings from the dashboard, and remove it.
• Pull it towards you and remove the handles for the headlight range control and the dashboard light switch.
• Unscrew the nuts securing the headlight range control and the dashboard light switch.
• Remove the steering wheel and steering column switches.
• Set the ignition key to position “0” and remove the connector with the ignition switch wires.
• Unscrew the fastening screws and remove the central panel.

Now we can get to the details of the interior heating system. We need to take them off.

Similar news

• Let's look under the hood again. If you have containers or extra money, drain the antifreeze from the system.
• We find hoses in the engine compartment going to the heater tap pipes. We remove them by loosening the clamps.
• Moving into the interior, we remove the hoses from the pipes under the dashboard. Unscrew the two nuts securing the stove tap and remove it.
• To the right of the stove body, unscrew the screw that holds the clamp of the heated glass flap rod.
• Unscrew the three screws securing the heater radiator and remove it.
• Now let's examine all the details. If we find faulty ones, we replace them.

Video “Heater fan VAZ 2108”

You can learn how to remove the named part from the video from the author Alexander Tselovalnikov.

Self- replacement of the VAZ-2109 stove tap, high and low panel

the heater valve usually needs to be replaced if it starts to leak or gets stuck so that its regulator stops moving. It does not seem likely to repair the old one, and it cannot be restored. Meanwhile, without this element, interior heating is not able to work normally.

How exactly to replace a damaged heater tap on a VAZ-2109 car is done is described in this article.

Heating system elements

The stove diagram clearly shows the location of its main functional elements. It should be noted that the design of the stove on the VAZ-2108, 2109 and 21099 models is the same. Many car owners know that the heater in these models is not fully developed. As a result, the interior is not heated properly, so a decision is made to modify the stove with your own hands.

Just in this case, it is important to know the design of the heater so as not to confuse anything

Components:

The design of the stove of the VAZ-2109 car, whether it is a high panel or a low one, is absolutely identical. Therefore, the information presented will be useful to owners of this model with any instrument console.

Knowing the main points and what is located where, you can already try to independently deal with the problems that arise and fix the malfunctions that appear, while saving money and time on trips to the service station.

Malfunction - characteristic symptoms

The following signs indicate that the faucet is leaking:

• traces of water are found on the floor in the cabin;
• There was a corresponding smell of antifreeze in the car.

Having found one of the above symptoms, you must certainly examine the failed unit. It is important to realize that if the damage is not repaired on time, then the repairs will cost even more money, and it will most likely not be possible to do it yourself.

How to perform an inspection? It will be useful to get under the hood from the engine side. It must be emphasized that leaks can occur in different places in the cooling system, so it is useful to examine the entire system. It is more convenient to do this with a flashlight. Coolant, namely, often drips from:

• radiator;
• joints of hoses and pipes.

When it turns out that the faucet is the culprit of the malfunction, the owner needs to start replacing it as soon as possible.

See:

This requirement is even more pressing if it’s winter, because without heating in a car it will be very uncomfortable to move around and also unsafe if you have a long trip through a sparsely populated area.

Which one is better to choose?

The quality of the new crane largely determines the duration of its operation and the reliability of the entire system.

In total, there are three types of this unit on the Russian market. This means:

• standard, that is, native, used by the manufacturer;
• ball valve;
• ceramic.

The first one is very inexpensive, but usually lasts a fairly short period of time. For this reason, it is worth choosing it only when the car enthusiast does not have extra money or if he was unable to buy anything else.

The ceramic model is more expensive and quite durable, but its disadvantage is its relatively low throughput. If you live in the southern regions, then feel free to take this option. Otherwise, a ball valve is ideal. This type of locking valve is different:

• great reliability;
• strength;
• good throughput.

However, the latter option may also turn sour over time.

How is the replacement made?

If the tap does not open and you find a problem in the summer, then there is no need to rush, but the leak requires prompt elimination - after all, the cooling system is constantly losing antifreeze, and this, in turn, calls into question the normal functioning of the power plant.

You need to know that in both the older and new 2109 , the tap is located opposite the front passenger seat, under the panel.

To replace the node in question you will need the following:

• new tap ;
• a set of gaskets (usually it is sold complete with the above unit);
• a can of WD40 or its equivalent;
• wire brush;
• wrenches for 13 and 10 (both socket and ring);
• screwdrivers;
• container for antifreeze;
• new coolant.

Replacement instructions

In most cases, the reason lies precisely in the radiator device, so below we will talk about how to replace the VAZ 2109 heater radiator.

How to change the unit on cars with a high or low panel, read on:

1. The device itself is located at the passenger’s feet, under the glove compartment. The replacement procedure will be identical for cars with a high and low panel, only in the first case you will have to remove the passenger seat. After removing the chair, you can see the screws on the right that secure the panel; they need to be unscrewed. The panel itself needs to be slightly pulled towards itself; insert some kind of spacer, for example, a wooden beam, into the gap that appears.
2. Fully tighten the tap, and place a rag under possible coolant leaks.
3. Then open the engine compartment and unscrew the cap on the radiator unit. The last unit is located between the glove box, as well as the lower shelf below it. The steps you need to follow next must be completed as quickly as possible, otherwise the coolant may spill. The lines that come from the radiator device must be closed; this will require plugs. Reach your hand through the detached center console, disconnect the lower line and plug the hole with a plug as quickly as possible.
4. Repeat similar steps with the upper hose.
5. The radiator is removed after all consumables have been drained. A new device is being installed.

Some car owners believe that if the backlight on the center console in the heater area disappears, this is due to the operation of the stove. Remember that the backlight of the stove has nothing to do with the operation of the unit as a whole, so if the backlight has disappeared, you need to find an open circuit and repair it.

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Execution of work

The car must be placed on a pit or ramp. Its wheels are fixed with stops. You should start working no earlier than the engine has cooled down. Don't forget to apply the handbrake! You will also need to disconnect the battery - it will be enough to remove the negative wire from it.

It will not be possible to do without draining the antifreeze. Therefore, the prepared container is placed under the hole intended for this purpose and, unscrewing the plug, wait until the coolant drains out completely.

Next, you need to disconnect the pipes connecting the engine directly to the mechanism that has become unusable. The fastening clamps on them are loosened. Use a brush to clean the threads on the two studs that hold the heater tap itself. As reviews indicate, without WD40 it is most likely impossible to easily remove a faulty unit.

Checking the functionality of the heater tap

If the cold or hot air supply modes do not switch, the cause may be a loose damper control cable or souring of the mechanism itself. How to open the tap of the VAZ-2109 stove in this situation?

To do this, you need to remove the side panel of the dashboard on the passenger side. Then check the condition of the cable and if this is the reason, then connect it back into place. You can also, without removing the panel, put your hand under the dashboard, where the VAZ-2109 heater tap is located, and move the VAZ-2109 heater damper lever to the desired position. If the lever does not give in, then most likely it has gone sour and must be replaced.

Removing and replacing the heater valve

To replace the VAZ-2109 heater tap, you need a set of tools available to most drivers:

• a set of Phillips and slotted screwdrivers;
• a set of open-end wrenches No. 10 and No. 13 or socket heads of these sizes, as well as a wrench with a ratchet mechanism and a cardan;
• silicone sealant;
• container for draining coolant;
• metal brush;
• universal penetrating lubricant WD-40 or its equivalent;
• inspection hole, overpass or lift;
• rags to protect the interior flooring from antifreeze.

Ceramic, ball, and electric valves for the VAZ-2109 stove are available for sale. Which heater valves for the VAZ-2109 are better than those listed? With rare use, ball mechanisms are more susceptible to souring, and the electronic automatic heating control system “SAUO” is much more difficult to install. Ceramic mechanisms produced in Russia or “LUZAR” are free of these shortcomings.

Many experienced drivers advise simply replacing the heater taps with water taps. The benefit of this solution is not only in cost, but also in reliability - the coolant either constantly circulates or is easily closed manually at the pipe. Another way to make it easier to change the heater faucet of a VAZ-2109 is to abandon it altogether; the cabin temperature in this case is regulated by air dampers.

Instructions on how to change the heater tap of a VAZ-2109:

1. Before replacing the valve of the VAZ-2109 heater, place the car on an overpass and, unscrewing the cap on the radiator, drain the coolant into a container prepared in advance.
2. When the radiator is empty, use a screwdriver to loosen the clamps on the pipes going from the engine to the heater, then use WD-40 and a metal brush to clean the threads on the studs securing the part to be replaced. When finished, completely unscrew the clamps.
3. Carefully remove the hoses one by one; they may contain residual antifreeze that needs to be drained.

Important! Do not skip this step, because it will not be possible to remove the valve of the VAZ-2109 stove with the hoses connected.

1. Having removed the side trim of the torpedo from inside the cabin, check the condition of the pipes and change them if necessary.
2. Then, under the car, using a socket wrench No. 10, unscrew the nuts securing the part to be replaced on the VAZ stove
3. Returning to the car interior, pull the faucet towards you (where the right passenger seat is), remove the spring clamp and disconnect the control cable from the part being replaced.
4. We take a new spare part and reassemble it in the reverse order.

Important! To prevent future leakage of coolant at the joints of the pipes, it is necessary to treat it with silicone sealant, and also to increase the service life, install rubber seals where the heater faucet is located on the VAZ-2109.

We make sure that the radiator plug is in place and fill it with coolant to the required level. Then we start the engine and, having gotten rid of air pockets, check the proper operation of the heater modes. This completes the replacement of the VAZ-2109 heater valve.