4.17. Engine cooling system: 1 - expansion tank plug; 2 - expansion tank; 3 - hose for removing the coolant from the throttle branch pipe; 4 - a hose from the radiator to the expansion tank; 5 - radiator outlet hose; 6 - left radiator tank; 7 - aluminum radiator tubes; 8 - plug; 9 - the right radiator tank; 10 - drain plug; 11 - radiator core; 12 - casing of the electric fan; 13 - impeller of the electric fan; 14 - electric motor; 15 - pump gear pulley; 16 - pump impeller; 17 - toothed belt of the camshaft drive; 18 - engine block of cylinders; 19 - pump inlet pipe; 20 - radiator supply hose; 21 - heater radiator outlet hose; 22 - hose for supplying coolant to the throttle pipe; 23 - outlet pipe; 24 - filling hose; 25 - heater radiator supply hose; 26 - thermostat; 27 - coolant temperature sensor of the engine management system

The cooling system (Fig. 4.17) is liquid, closed type, with forced circulation of coolant, with an expansion tank 2, in which a coolant level indicator sensor for the on-board monitoring system is installed.

The centrifugal type coolant pump is driven by the timing belt 17.

The electric fan is equipped with a plastic four-blade impeller 13 mounted on the shaft of the electric motor 14, which is turned on and off by the controller.

The thermostat 26 with solid thermosensitive filler is provided with a main valve and a secondary valve. The beginning of the opening of the main valve at a coolant temperature (85 ± 2) ° С, the stroke of the main valve when the coolant temperature reaches 102 ° С - at least 8 mm.

Radiator tubular-plate, aluminum, with plastic tanks 6 and 9. Two-way radiator with a partition in the left tank. Coolant is poured through the filler neck of the expansion tank 2, there are inlet and outlet valves in the plug 1 of the expansion tank. The opening pressure of the outlet valve is 110–150 kPa (1.1–1.5 kgf / cm 2), the opening pressure is 3–13 kPa (0.03–0.13 kgf / cm 2).

The cooling system is filled with Tosol-A40M coolant.

The location of the cooling system elements in the engine compartment: 1 - hose from the radiator to the expansion tank; 2 - radiator outlet hose 3 - radiator inlet hose; 4 - radiator; 5 - thermostat; 6 - hose for supplying coolant to the throttle assembly; 7 - hose for removing the coolant from the throttle assembly; 8 - coolant level sensor in the expansion tank; 9 - expansion tank; 10 - expansion tank plug; 11 - casing with fan

Preparation of the workplace

• 1. Tidy up working overalls.
• 2. Carefully inspect the workplace, put it in proper order, remove all foreign objects that interfere with the work.
• 3. Check the presence and serviceability of hand tools, devices and personal protective equipment.
• 4. Prepare good lighting.
• 5. Park the vehicle on a level, level surface with the front of the vehicle higher than the rear.
• 6. Disconnect the negative terminal of the battery.

Diagnostics and maintenance of the vehicle cooling system VAZ-2115

The cooling system of the VAZ 2115 is liquid, closed type, with forced circulation. The tightness of the system is ensured by the inlet and outlet valves in the expansion tank plug.

The thermostat and radiator fan keep the engine running at a thermal level. The latter is turned on by a sensor screwed into the left radiator tank on the VAZ-2115 engine. The sensor contacts close at a temperature of 99 ± 2 ° С, and open at a temperature of 94 ± 2 ° С. To monitor the temperature of the coolant, a sensor connected to the temperature gauge on the dashboard is screwed into the cylinder head of the engine.

The coolant pump is a vane, centrifugal type, driven from the crankshaft pulley by a toothed timing belt.

The thermostat controls the redistribution of fluid flows. On a cold engine, the thermostat bypass valve closes the pipe leading to the radiator, and the liquid circulates only in a small circle (through the thermostat bypass pipe), bypassing the radiator.

On the VAZ-2115 engine, the small circle includes a heater radiator, an intake manifold, a carburetor heating unit and a liquid chamber of a semi-automatic starting device. At a temperature of (85 ± 2) ° С, the bypass valve of the thermostat begins to move, opening the main branch pipe; while part of the liquid circulates in a large circle through the radiator. At a temperature of about 102 ° C, the branch pipe opens completely, and all the liquid circulates in a large circle. The main valve travel must be at least 8 mm.

The principle of operation of the cooling system is as follows. A centrifugal pump, the shaft of which is driven by a belt from the crankshaft pulley, draws coolant from the bottom of the radiator and pumps it into the cooling jacket of the head and cylinder block. The liquid washes the most heated parts, takes away some of the heat from them "and heats up, and then through the hose enters the upper radiator tank. At the same time, part of the heated liquid passes through the jacket of the engine intake pipe, heating the combustible mixture; if necessary, the liquid can be discharged with a tap to the heater Passing through the core of the radiator into its lower reservoir, the heated liquid is cooled and again flows to the centrifugal pump.

Engine cooling system diagram

1 - heater radiator; 2 - heater radiator steam outlet hose; 3 - outlet hose; 4 - supply hose; 5 - coolant temperature sensor (in the block head); 6 - hose of the pump inlet pipe; 7 - thermostat; 8 - filling hose; 9 - plug of the expansion tank; 10 - coolant level indicator sensor; 11 - expansion tank; 12 - outlet pipe; 13 - liquid chamber of the carburetor starting device; 14 - radiator outlet hose; 15 - radiator supply hose; 16 - radiator steam outlet hose; 17 - left radiator tank; 18 - sensor for turning on the electric fan; 19 - fan motor; 20 - impeller of the electric fan; 21 - the right radiator tank; 22 - drain plug; 23 - casing of the electric fan; 24 - toothed belt of the timing mechanism drive; 25 - impeller of the coolant pump; 26 - supply pipe of the coolant pump; 27 - supply hose to the liquid chamber of the carburetor starting device; 28- discharge hose;

Mechanism	Possible malfunctions	Remedies	Notes (edit)
1. Radiator	1. Dirty or clogged radiator. (clogged with small insects, dirt, etc.)	1. Clean the radiator 2. Wash in the sink 3. If necessary, replace the radiator
2. The radiator is leaking (the radiator is broken)	1. Welding 2. Soldering 3. Replacement
3. Radiator hoses clogged or worn	Replace hoses	If coolant leaks are caused by a burst hose, it can be temporarily patched with adhesive tape (electrical tape, scotch tape)
4. Damaged radiator filler cap
5. Internal blockage of the radiator	Rinse with special. liquid and water
2. Thermostat	1. The valve does not work
2. The case burst
3. Water pump	1. Bearing wear		Repairing the water pump, as a rule, does not lead to the desired result, therefore it is recommended to replace the pump assembly.
2. Wear of the gasket
3. The tension of the water pump drive belt is loosened	Adjust the tension of the drive belt
4. Fan	1. Broken fan switch
2. Broken fan blades
3. Failure of the fan
5. Expansion tank	1. The expansion tank is leaking
2. Swelling of the coolant reservoir	Replacing the reservoir cap or cylinder head gasket

An airlock in the engine cooling system is one of the main reasons for the engine to warm up to operating temperature for a long time. Therefore, every driver should be interested in removing the airlock from the cooling system of their vehicle.

How to properly expel an airlock from the cooling system?

According to the law of physics, air accumulates in the highest place. In an automobile, the throttle assembly is the highest link in the coolant circuit. That is why the air must be removed from there. There are several ways to get rid of an airlock. Here's the first one from the bottom:

If you have an engine with a volume of 1.6 liters, then the first thing to do is remove the plastic cover on the engine - unscrew the cover on the engine to fill in oil, and then pull out the entire cover. It is seated on rubber seals. After removing this plastic screen, we screw the oil cover back in order to avoid dirt getting into the engine crankcase.

1. We find the heating pipes of the throttle assembly (there are 2 of them), see the figure. We pick up any phone
2. Next, we unscrew the cover of the expansion tank (coolant tank) of the tank, and cover the neck of the tank with a clean rag.
3. We begin to blow into the tank with liquid. We blow until all the air comes out of the hose and the antifreeze flows.
4. Quickly put the tube back on and tighten it with a clamp so that no air gets there.

(It is worth noting that, depending on the tube that you removed, the antifreeze may flow both from the tube; and from the fitting from which the tube was removed)

The second method of removing air from the cooling system is less perverse. There is no need to blow anything here:

1. We warm up the engine to operating temperature
2. Warm up, turn off the engine
3. The expansion tank cap does NOT need to be unscrewed.
4. As in the first method, we unscrew the clamp of the coolant pipe on the throttle assembly.
5. Having removed the heating pipe of the throttle assembly, release the air, and after the antifreeze begins to flow out, immediately put it back on the fitting and secure it well with a clamp.

But be careful and careful! Do not forget that the temperature of the coolant is approximately 90 degrees.

There is also an easier, but less effective way to eliminate the airlock:

1) We drive up a steep hill so that the radiator cap becomes the highest point of the cooling system.

2) Unscrew the expansion tank cap and radiator cap.

3) Let the car warm up to operating temperature

4) Then we gas it several times and in parallel pour coolant into the barrel.

We do it until the bubbles stop appearing.

How to remove an airlock on a VAZ with electronic (e-gas)?

Since there is no throttle valve cooling system, you need to bypass this unit. Here you can also set the car up.

I hope that these three ways will help you solve the problem, and you have found all the answers to your questions on the topic "How to get rid of an airlock?"

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Do I need to warm up the injection engine

lada-vaz-2114.ru

How to expel air from the cooling system of a VAZ 2114

The ability to cool automobile engines is rightfully considered one of the important components to ensure the stability of its operation and achieve the best indicators of power, torque, and fuel consumption. It uses liquids as a heat carrier, such as water, antifreeze or antifreeze. There are also motors, where heat is taken from the engine by the air flow blown by the fan.

The presence of an air lock interferes with the normal operation of the cooling system.

Features of cooling the VAZ 2114 engine

This car, like the VAZ 2113, VAZ 2115 cars, uses a closed VAZ liquid cooling system, in which antifreeze or antifreeze is used as a coolant. The coolant circulates through special channels in a running motor. Its circulation is provided by a pump, which is driven by the engine crankshaft using a drive belt.

It regulates the flow of coolant, its direction, a device called a thermostat. It is designed in such a way that before the coolant warms up to operating temperature, it circulates in a small circle, bypassing the radiator. When the liquid reaches a temperature of 870C, it opens, the flow of liquid is directed to the radiator for cooling.

The radiator is blown by a stream of oncoming air, and when there is not enough air, an electric fan turns on. For these purposes, a sensor is installed in the radiator, which issues a signal to turn it on. Also, hot liquid flows through the radiator of the stove and heats the interior of the car in cold weather. The excess of antifreeze from thermal expansion is collected in an additional tank, which is called an expansion tank.

Air in the system

Air in the engine cooling system is unacceptable. The heat exchange processes in the motor are disrupted, which can cause it to overheat, thereby creating the prerequisites for failure. In cold weather, there will be no heating of the car interior, body glazing. Sensors installed in injection engines begin to send distorted information to the electronic control unit, which disrupts the engine's operating cycle.

Why air congestion occurs

In order for an airlock to appear in the cooling system, one of several possible reasons for its appearance is sufficient. These may be such violations in the system:

1. The clamps of the rubber pipes are not tightened enough, because of this, air leaks are possible, and this leads to the fact that an air lock appears in the cooling system of the VAZ 2114. This is especially true for the cold season, when, due to frequent temperature changes, they expand and contract many times ;
2. Hanging valve built into the expansion tank cap;
3. The tightness of the water pump is broken;
4. The presence of damage in the form of cracks, leaks in the main radiator or an additional one for the stove;
5. Burnout of the gasket between the cylinder block and the block head.

Burnout gasket

They can also add problems of clogging of radiators or channels in the cylinder block, breakage of pump blades. The conclusion from the above is that it is necessary to immediately remove the airlock.

How to get rid of?

Before starting work on getting rid of air from the system, it needs a thorough inspection. Eliminate all, if any, leaks, stretch all the clamps on the nozzles, otherwise all work may be in vain. Make sure that the "main distributor" of the coolant flow is working, meaning the thermostat.

In order to expel air from the VAZ cooling system, there are several ways. Let's take a look at them:

• The first way will be as follows. Air bubbles are always lighter than any liquid, therefore they always collect at the top point of a closed vessel. For VAZ 2114, this will be a throttle assembly. You can remove the airlock from this unit like this. Remove the engine trim panel to gain access to the throttle assembly. Unscrew either of the two tubes from this node. The clamp must be left on the tube for quick re-assembly. Now it is necessary to create excess pressure in the additional tank. This can be done by supplying compressed air to the expansion tank by any means at hand. It will displace the antifreeze from the tank, which in turn will be able to remove air from the system. Some sources recommend blowing into the expansion tank neck. It is undesirable to do this, because antifreeze or antifreeze are highly toxic substances, their ingestion can cause serious harm. As soon as antifreeze or antifreeze appears from the tube or pipe, they quickly put everything in place and tighten the clamp well;
• Removing air from the cooling system by the second method has some similarities with the previously described method. You can bleed the air like this. You need to wear gloves on a well-heated engine, disconnect the pipe from the throttle assembly, you do not need to open the plug on the additional tank. Let the air out, make sure that coolant flows from the pipe or tube, and put everything back in place;
• It was the turn to consider the following method of how to expel an airlock from the engine cooling system. In this case, you need to place the machine in such a way that the expansion tank is the highest point in the system. With this method, it is desirable to have an assistant. Open the plug on the expansion tank and warm up the engine. When the operating temperature is reached, the assistant does a re-gas several times, and at this time it is necessary to add antifreeze or antifreeze to the tank. It must not be allowed to remain completely without liquid. They do this until all the air is exhausted from the system.

The third way is good for car owners with an electronic gas pedal. With such a scheme, there is no cooling of the throttle assembly, therefore, the airlock is removed using any available hill.

I would like to hope that this article will be useful to the owners of not only VAZ cars and will help them in getting rid of air jams in the engine cooling system.

autovaz-2114.ru

Instructions for freeing the VAZ-2115 cooling system from air congestion

Due to the cooling system, the vehicle is able to very quickly reduce the temperature of the main engine parts heated during operation and other components that undergo overheating. It should be noted that not only parts are cooled, but also gas and oil. By means of a simple device, the engine is protected from severe overheating. With the help of various coolants, which are antifreeze and antifreeze, "traveling" through special channels, heat is taken and subsequently cooled in the system radiator. However, the functionality of the unit may be impaired, which is most often facilitated by the appearance of an air lock. In the material below, we will consider three effective methods that have proven their effectiveness in practice and can help any motorist whose VAZ-2115 stove is airing.

Early signs of malfunction indicating a problem

Almost every experienced car owner of a domestic vehicle knows how to expel air from the VAZ-2115 stove. The fact is that, as practice shows, this phenomenon manifests itself quite often and is of a periodic nature.

Most often, a malfunction manifests itself due to the mistakes of the motorist himself, who incorrectly refills or changes the coolant. Less often, the problem manifests itself if it detects:

• suction, which is present at the junction of the pipes;
• defect of the atmospheric valve;
• depressurization of the pump;
• leakage in radiators.

However, whatever the technical side of the issue forced the car owner to get rid of the airlock, it should be remembered that in the presence of this problem, the engine will start to warm up and cool down for too long. Due to the airiness, the coolant will not normally move to the cooling radiator, which will lead to overheating of the power unit.

Methods to expel air from the VAZ-2115 stove

If the motorist diagnosed his car and realized that his VAZ-2115 stove was airing, you should use at least one of the methods below, which are considered quite effective solutions to the problem.

First method (purging the system)

According to the very first method, the motorist needs to dismantle the plastic casing that covers the vehicle's power unit. To remove this structural element, you will have to unscrew the cap that covers the hole for adding oil. Then you need to remove the cover. It is worth noting that immediately after removing the protective casing, the cover should be replaced, which will preserve the cleanliness of the power unit, preventing the possibility of dirt and dust entering.

The next step, which can solve the problem of airiness in the system, should be the search for the pipes that are responsible for warming up the throttle assembly. At this stage, it is necessary to pull off any branch pipe and, by twisting the lid from the opening of the container with antifreeze, cover the resulting "hole" with a clean rag.

To get rid of the malfunction, you will have to actively purge the inside of the tank. Through such actions, pressure is created, which pushes out the collected air. The need to stop the procedure should be indicated by the antifreeze coming from the branch pipe, since it will begin to come out only after there are no air accumulations in the system.

After blowing through the VAZ-2115 system, the tube must be returned to its original place, and you should not hesitate, everything should be done as quickly as possible, otherwise a "portion" of unnecessary air will reappear in the tank.

Method two

If the VAZ-2115 stove is very airy, you can get rid of the resulting plug in just a few minutes without blowing out the system. To drive out the accumulation of air, after active warming up of the power unit for 15 minutes, muffle it and, with the cover of the expansion tank closed, remove any pipe on the throttle assembly. After the antifreeze or antifreeze begins to come out, you need to quickly insert the pipe into its original place. However, when using this method, one should not forget that after the operation of the power unit, the antifreeze could warm up to 80 ° C.

Third method

The instructions described below will most likely help everyone who has a VAZ-2115 stove airborne. To clean the system, you must first put the car at an angle; a steep hill is suitable for this, the vehicle must stand with its nose at the highest point. After the car is put on the handbrake, and special stands will be installed under all the wheels to protect the driver from unexpected rolling, you need to twist the plugs that close the holes on the radiator and expansion tank.

The power unit must be activated for at least 10 minutes so that it has time to warm up, then you need to press the accelerator pedal at regular intervals, while adding coolant to the system.

Topping up antifreeze or antifreeze should be done until bubbles stop appearing. After their complete disappearance, the work can be completed.

Conclusion

With a competent approach, any owner of a domestic vehicle can get rid of an airlock in the cooling system, and everything can be done without referring to qualified specialists, quickly and at no cost. It is worth noting that as soon as a similar problem was diagnosed, you should not postpone its solution, since many additional problems may appear in the future. The performance of the power unit and its constituent components depends on normal access for the circulation of antifreeze or antifreeze.

remam.ru

Removing air plugs from the VAZ-2114 stove

Airing the heating system on VAZ-2114 cars is a fairly common phenomenon. Faced with the problem of an airlock, you can solve it yourself. The main thing here is to find the reason, and then use one of the three most effective methods.

Cooling system features

To understand the essence of airflow and the consequences that an airlock can lead to, you need to understand the cooling system itself. It is not recommended to start repairs with your own hands, without owning at least basic theoretical knowledge:

• VAZ-2114 vehicles are based on a closed liquid cooling system;
• antifreeze or antifreeze is used as a coolant;
• special channels are used to circulate the coolant through the engine;
• circulation is carried out using a pump, and it, in turn, is driven by the crankshaft through the drive belt;
• the thermostat is responsible for adjusting the flow of coolant and its direction;
• the thermostat has a design that allows it to circulate in a small circle until the coolant warms up to the required parameters (in this case, the coolant does not enter the radiator);
• when the temperature reaches 87 degrees, an opening occurs and coolant penetrates directly into the radiator;
• radiator blowing is carried out due to air flows when the car is moving;
• if the natural airflow does not cope, then the electric fan is activated;
• a special sensor is responsible for its activation;
• hot liquid penetrates the heater radiator and allows the antifreeze to be warmed up in winter;
• the excess of antifreeze, which is formed during its thermal expansion, turns out to be in an additional (expansion) tank.

As you can see, if there is a traffic jam in this circuit, this can lead to serious negative consequences for the VAZ-2114.

Reasons for the formation of a plug

Under no circumstances should air enter the engine cooling system. This will lead to disturbances in heat transfer, which will entail overheating of the engine, lack of heat inside the cabin and more. The engine receives false information from the sensors, therefore it ceases to function correctly.

If your VAZ-2114 stove is blown, there may be several reasons:

1. Fixation of rubber sleeves. Clamps often loosen, resulting in leakage. Air is sucked through them, which leads to the appearance of air locks. Most often, a similar phenomenon is observed in winter - sharp temperature changes compress and unclench the rubber of the pipes.
2. Pump. Another fairly common reason is the pump. The problem is the same - a violation of the tightness of the water pump.
3. Valve. It is worth paying attention to the valve, which is built into the expansion tank (on the lid). If it freezes, it can provoke airing.
4. Damage to radiators. Cracks can occur on the main radiator or on the auxiliary, that is, on the heater radiator. In these situations, the likelihood of airlock formation is equally high.
5. Cylinder head gasket. If it burns out, the tightness will be broken and air leaks will begin. As a result, there is a traffic jam in the system.

And also among the possible reasons for airing or the formation of an airlock include:

• damage to the pump blades;
• clogging of the channels of the cylinder block;
• contamination of the radiator.

Important! Before getting rid of the plug, be sure to eliminate the cause that entailed the airing. Retighten the clamps, replace the gasket, clean the radiator, etc.

Problem solving methods

If you do not remove excess air from the system, this will lead to the following consequences:

• increased fuel consumption;
• low efficiency of the stove;
• engine wear;
• breakage.

Important! The laws of physics say that air tends to its highest point. When airing the stove on the VAZ-2114, this place will be the throttle assembly. So you should drive out the cork from there.

In total, there are three methods of combating airborne air pollution. Each of them has its own nuances.

Method one

Some people take this method critically, but in fact it is very effective.

1. Remove the oil filler cap. This will allow you to dismantle the plastic protection from the mounts (they are rubber).
2. It is better to screw the lid back on right away, otherwise you risk bringing in excess dirt into the motor.
3. Remove one of the throttle heating tubes. It doesn't matter which one.
4. The expansion tank has a cover. It should be removed too.
5. Begin to actively blow into this very tank. The fact that you managed to expel air will be indicated by antifreeze or antifreeze flowing from the dismantled branch pipe.
6. Return everything to its place as quickly as possible, twist the tube and fix the clamp. If you delay, the suction will start again and you will have to repeat the procedure.

The method is not complicated, but not everyone will agree to it. Therefore, look at the alternatives.

Method two

You won't have to blow anywhere here. The job is just as easy.

1. Warm up the engine so that it reaches a temperature of about 90 degrees. Then turn off the engine.
2. So far, the plug on the expansion tank remains there. You don't need to touch it.
3. On the throttle assembly, remove the clamp and tube. That is, one should act similarly to the first method.
4. Wait for all excess air to drain from the system. It is easy to determine this - the coolant will begin to flow out after a while.
5. When the leak begins, immediately replace the branch pipe, fixing it on the fitting and tightening the clamp until it stops. Make sure the clamp is properly tightened, otherwise the work will be wasted.

Important! In this situation, watch out for antifreeze. It is hot, and leaving the system may cause hot liquid to come into contact with your skin.

Third method

A number of VAZ-2114 owners note that it was in this method that they found the best way to cope with the problem of airborne airing. But you need to create certain conditions.

1. Choose a place where you can drive the front wheels of your car so that the radiator cap is positioned as the highest point of your cooling system. Although the front end can simply be raised in the garage with a jack. Proceed at your own discretion.
2. Remove the caps from the radiator and expansion tank.
3. Start the engine. Let it warm up to the 90 degree mark.
4. Press the gas pedal actively. Just make sure before that that you have not turned on the transmission.
5. You will need help, since when gassing, you need to gradually pour coolant into the tank at the same time. Pour until no more bubbles form when you press the gas.

Important! Although the third method is considered easy to implement, it does not always give the desired result. So the previous two, although more complicated, but the effect of them is higher.

The airing problem is familiar to many owners of VAZ-2114 cars. Tell us about your solution methods, share your impressions of the presented methods of dealing with air congestion. It will be interesting to learn about alternative methods and the peculiarities of their implementation.

The engine cooling system is far from the most minor element responsible for the normal functioning of the car. Problems associated with normal engine cooling are of interest to any car owner. It is about this, and about how you can improve the work of this element of the car, and we will talk in our article.

Disadvantages of a basic cooling system

The main reason why it is very often necessary to refine the cooling system of the VAZ 2114 is the uneven operation of this system itself. So, when the stove is turned on, the heating of the interior, although it happens very slowly (especially when starting the car after parking with the engine turned off), still happens. But, when the system reaches 80 C, heating stops abruptly and cooling occurs.

The opposite situation also occurs in summer, when the operation of the fan shows itself completely unsatisfactory, and it is extremely difficult to be in the car (if an additional air conditioner is not installed).

All these shortcomings are caused by the imperfection of the cooling system itself, and we will tell you how to fix them below.

Why modernization is needed

It should be noted right away that the alteration of the cooling system of the VAZ 2114 is not a prerequisite for the normal operation of the car.

Its main goal is to achieve maximum comfort in the passenger compartment both in hot and frosty weather. It will help to avoid excessive heat or cold inside the car and save you from sudden temperature jumps (typical, by the way, of all other cars from AvtoVAZ - after all, they all have a cooling system built according to one general principle).

The most likely reason for the poor performance of the system is considered by many to be a radiator, which really does not have a high throughput, others are sinning on the pump (and in some cases it is really his fault).

But, as serious research has shown, the main reason for the poor performance of the cooling system is its thermostat. After all, it is this part that is responsible for the uniform heating of the water and its protection from excessive heating or freezing.

Modification of the thermostat activation system according to the diagram below will help to avoid such troubles as:

1. Long heating of the passenger compartment after parking.
2. Temperature jumps while driving.
3. Poor cooling in summer heat.
4. Uneven heating of the passenger compartment.

How to upgrade the system

The simplest scheme for modifying the cooling system of the VAZ 2114 is to replace in places the branch pipe extending from the stove and the branch pipe extending from the expansion tank. Thanks to such a simple and quick modernization, the following happens: during its operation, the car engine heats up the coolant, which then enters the thermostat.

From the thermostat, part of the coolant goes to the stove, and the other part goes to the pump and from there to the engine (it goes through a small circle). Part of the liquid supplied to the stove gives off part of the heat and, in a somewhat cooled form, enters the thermostat again.

The thermostat mixes the coolant coming from the stove with the heated fluid coming from the engine. As a result, the overall temperature of the liquid decreases (due to the cooled coolant from the stove) and the valve does not open. Due to this, the thermostat valve will open only when all the liquid in it has a temperature of +85 C.

As you can see, the circulation of the liquid and its temperature in the system will become much more uniform and will not have sudden changes, as when using the "classic" scheme installed from the factory.

A 6-hole thermostat ("new design") must be installed for this arrangement. If for any reason there is a thermostat with 5 holes, then it should be replaced with the specified one.

When preparing to tune the cooling system of the VAZ 2114 according to the above scheme, it should be remembered that when replacing the pipes in places, their length will not be suitable - one will be longer and the other shorter. That is why, in order to complete the required procedure, you will need to purchase new pipes and adjust them in length, or make them yourself.

For this entire procedure, you need a minimum of tools:

• crosshead screwdriver;
• pliers;

Before dismantling the nozzles, put a cloth under them in order to avoid a coolant spill.

When fixing the pipes with clamps, it is important not to apply excessive force. Excessive tightening can soon lead to destruction of the pipe material.

By upgrading the cooling system in this way, you can achieve the following results:

1. Even in the most severe frosts, the interior of the car will be warm (thanks to a more even circulation of liquid and an increase in the efficiency of the stove, on average, by 20%.
2. In the summer heat, the cooling of the passenger compartment will be almost 2 times more effective (after all, the speed of fluid circulation will more than double).
3. The operation of the car engine will become more uniform and smooth, the "failures" characteristic of VAZ (and other cars of domestic production) will disappear.

In addition to all this, the readings of the temperature sensors will now show the true temperature, which exactly corresponds to the temperature in the system.

As you can see, a very simple and quick (the replacement itself can be performed in a few minutes) procedure helps to solve a number of serious problems at once. It is also worth noting that such tuning can be performed not only on 2114, but also on other VAZ cars.

Useful video

For more information on this issue, you can glean from the video below: