Cooling system of an injection engine on a VAZ 2114 (diagram)

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The VAZ 2114 uses a hidden cooling system, which operates on the basis of a special liquid. A mechanical pump ensures that this coolant moves through the system.

Alas, the build quality of the VAZ 2114 radiator and the cooling system as a whole leaves much to be desired, which is why it can fail over time. The main disadvantage of the OS (cooling system) of the “fourteenth” model is the need for constant monitoring, regular maintenance and repair.

The solution to these issues is complicated by the fact that the cooling system of the injection engine on the VAZ 2114 is quite complex and includes 28 elements. The most convenient way to get to know them is on a special chart.

How the OS works

The cooling system of the VAZ 2114 operates on the basis of internal heat exchange, which is carried out under the influence of coolant. It moves forcibly thanks to a pump, which is activated by a drive belt. The mixture enters the OS through the expansion tank.

The electric fan is located on the electric motor shaft. Depending on the indicators of the sensor, it is turned on or off. One of the main elements of the OS is a thermostat valve with a storage tank , which senses changes in air temperature.

If the fluid temperature is around 87 degrees, the main valve turns on and sends fluid through the large circuit. At a temperature of 102 degrees, the valve stops at 8 mm.

How much does this repair cost?

With proper skill, you can dismantle the old heating element yourself, even without removing the console. It is clear that the procedure is much easier to carry out with the console removed, but if there is not enough time, you can carry out the replacement this way. You don't need a pit or a lift to work, but you shouldn't do any repairs on cold days. If there are no conditions, it is better to seek qualified help from service technicians. The price for this work, depending on the region, starts from 1,500 thousand rubles and above. For repairing a breakdown on a VAZ, this price is quite high, but it is due to difficult access to the element being replaced.

Replacing the coolant

To normalize the cooling system on a VAZ 2114, sometimes it is enough to replace the coolant. To determine when this needs to be done, you should know some nuances:

• The effective life of antifreeze is 2 years, and antifreeze is 5 years;
• Typically, replacing antifreeze is required after a mileage of 20-40 thousand kilometers, depending on operating conditions;
• A changed color of the composition indicates that it needs to be replaced.

antifreeze as a liquid , since it has a long service life and does not wear out the system so intensively. in favor of antifreeze is its affordable price.

Before adding new fluid, the system should be flushed. For this:

• Drain all existing coolant from the system;
• Screw the plugs tightly;
• Fill with high-quality distilled water to the maximum;
• Start the engine and bring it to operating temperature;
• The revolutions should be about 3 thousand. Avoid overheating the engine;
• After turning off the engine, leave the car for 7 minutes, after which the water is drained. If the system is heavily contaminated, the procedure must be repeated until completely clean distillate begins to pour out.

Specific examples

The painted copper radiator on the VAZ 2114 deserves special attention in the debate about which heater radiator is better, copper or aluminum. By the way, these are made by an office called “LUZAR”. There is no need to take such units: they are very cold, and have minimal heat transfer! But such devices have a full year warranty.

Why is everything so bad with Luzar? An autopsy will show: the rubber band, which is located next to the passage channels of the ribs, simply becomes damp after a relatively short period of time (less than a year) and the same short mileage. Another big disadvantage of Luzarov radiators is that the pipes are separated from each other, this reduces heat transfer, but makes the cost advantageous.

In general, it is now difficult to find a zero radiator that is relatively recent. Factory junk will crumble, radiators from the manufacturer are not always of decent quality. Therefore, the guideline you can choose is very simple (when choosing a radiator): it just has to be working and not clogged. And what material it is made of is the tenth thing.

Another company, DAAZ, has proven itself very well. There is only one minus - try to find it, and then try to find the original. By the way, the heat output of the Daazov heater is slightly lower than the factory one in the VAZ. And in terms of quality it clearly wins.

Another example is a heater from Oberkraft. The factory carefully approaches the testing process of the unit, which is why it is covered by a good warranty (one year). This device is made of aluminum alloy, which meets modern quality standards. An obvious advantage is the good, uniform distribution of heat throughout the cabin (apparently, they decided not to skimp on pipes), but considering the price, you can’t say that this is an easy purchase – from 1,800 rubles. But there are justifications for this price:

1. Corrosion resistant
2. Relatively light in weight
3. Very important: resistant to temperature changes!
4. Robust design
5. Excellent and uniform heat dissipation.

In winter, even the highest quality stove will play tricks in terms of heat output. We offer a couple of good tips on how to make the interior warmer:

• You need to change the antifreeze and rinse the entire cooling system - this will remove all the debris in the tubes, making it easier for air to enter the cabin
• A great way to improve the microclimate is to install a new stove!
• You can also replace the cooling radiator with a new one - this will save the antifreeze from premature fatigue
• An option is to replace the pump, because it is responsible for the stability of coolant circulation at idle
• Run all the pipes and get rid of air pockets

As strange as it may sound, the stove can be insulated. Yes, for example, after running the entire system, you can glue all the joints, then the heat through the pipes will be precisely directed through the channels towards you, and not spread in an unknown direction. Another way: change the mode of air intake from outside to recirculation (why it is worth explaining this elementary action as one of the ways: yes, because many people think that the stove needs to be plugged! But the air intake does not come clearly from under the hood, which is what they are trying shut up, but just from outside!

So, as soon as such a crazy thought appears in your head, change the air intake mode). The last option for preserving heat is to insulate the interior itself. A very logical action, especially considering the presence of gaps around the body on the fourteenth.

Why the OS does not work

The cooling system most often stops working due to improper operation of the thermostat. You can't do anything other than replace it.

If you don’t know which cooling radiator is best to choose for the VAZ 2114, look at the existing one. Buy an analogue from the manufacturer, or purchase a device with the closest characteristics.

The fourteenth model is equipped with an aluminum radiator with two additional tanks. The radiator design includes:

• Radiator;
• Upper tank with pipes;
• Bottom tank with pipes.

Which heater radiator to install on a VAZ 2114

Key advantages of aluminum radiators:

1. A radiator made of aluminum will have significantly more side fins. This makes it more convenient and practical.
2. The width of all channels in an aluminum radiator is much larger. It is because of this that you can increase the efficiency of supplying warm air at idle.

The main disadvantages of an aluminum radiator:

1. The aluminum radiator heats up extremely quickly.
2. It is almost impossible to restore an aluminum radiator that has even a small leak.

Aluminum radiator VAZ 2114

Key advantages of a copper radiator:

1. The copper radiator on the VAZ 2114 heats up for a very long time. It also takes a long time to cool down.
2. A radiator made of copper can be easily restored.

Copper radiator of the VAZ 2114 stove and its disadvantages:

1. A small number of ribs.
2. The channels are too narrow and small. They clog very quickly, which has the most negative effect on warming up. As a result, such a radiator has to be repaired quite often.
3. There is practically no heating at idle.
4. It is too difficult to find a sufficiently efficient copper radiator. Many of them are made from extremely low-quality material with many different impurities. The heat transfer of such devices is at the lowest level.

Copper heater radiator VAZ 2114

Radiator replacement

If there is a need to replace the radiator, remember the first golden rule - the engine must be cold before dismantling the device. Therefore, if you just arrived at the garage, let the car sit for a couple of hours. Better yet, leave the car and come back tomorrow.

The replacement procedure itself is as follows.

1. Unscrew the plug from the expansion tank and the cylinder and radiator plugs.
2. Drain the coolant into a large container.
3. Disconnect the radiator ventilation system from the battery.
4. Remove the silicone pipes of the VAZ 2114 cooling system by disconnecting them from the radiator and tank.
5. Remove the mounting bolts from the casing.
6. Hold the radiator and remove the skin and fan together.
7. This will completely free the radiator, so you can easily replace it with a new one.
8. Assembly of the unit is carried out in reverse order. After replacing the radiator, start the engine and check the efficiency of the new unit.

The main causes of radiator failure

Engine cooling radiator

Let's look at the main reasons for radiator failure on a VAZ-2114:

• mechanical damage (bounced stones or large debris on the road);
• deposits inside the tubes in the form of scale or rust, dirt;
• damage as a result of an accident.

How to prevent engine overheating?

To prevent engine overheating, it is necessary to constantly monitor the amount of coolant in the expansion tank, the operation of the thermostat and the condition of the radiator itself.

This is what a newly installed engine cooling radiator looks like. You need to make sure it is clean and blow it out regularly.

The appearance of traces of coolant on the asphalt after a short or long period of parking, as well as wet marks on the radiator itself, is a signal to check the radiator for leaks and possibly subsequently replace it.

Engine overheating

Coolant leaks can be caused by small cracks or loose connections. In such cases, it is possible to repair the radiator even without dismantling it. When repair is not possible, the only option is replacement.

Radiator repair

In some cases, the radiator can be repaired, so you don’t have to buy a new spare part.

Mostly repair work consists of eliminating leaks that have arisen as a result of defects, cracks and holes.

Most often, liquid leaks at the junction of plastic and metal parts. If there is a small leak, you can pour a special liquid with a coolant mixture inside the radiator. Thanks to its special composition, this product will seal the defects that caused the leak. If the damage is serious, repairs will no longer save the situation; you will still have to replace the radiator.

To check the tightness of the radiator, you can conduct a simple experiment at home.

1. Fill the bathroom with enough water to submerge the radiator.
2. Close all pipe openings tightly.
3. Lower the radiator under water about 30-50 centimeters. Apply a pressure of 0.2 MPa to it.
4. Watch what happens. If bubbles appear, the system is not sealed and needs to be repaired or replaced.

Do not even try to repair the radiator after side or frontal impacts in an accident. In such situations, he suffers first of all, and no clogging liquids will help you.

The most common mistakes of those who choose a particular radiator model

Some car owners prefer units. It is not worth buying such devices. The fact is that they have practically no heat transfer! The warranty on units from this manufacturer is 12 months, but the efficiency of such radiators is practically zero.

Radiator LUZAR

Sometimes car enthusiasts prefer heaters from. These devices are quite efficient. Manufacturer's warranty - 1 year. These radiators help distribute heat evenly throughout the car's interior, but the cost of these units may seem overpriced.

Radiator Oberkraft

Advice! Some car enthusiasts are faced with another problem. It turns out that even buying a fairly high-quality radiator may not give the expected result. In order for the stove to work effectively enough, you need to change the antifreeze in advance, and then rinse the cooling system of the machine. In a similar way, you can get rid of various debris in the tubes. This is extremely important, because only after this procedure the air entering the cabin will become cleaner.

We can also recommend replacing the pump. This unit is responsible for how coolant circulates in the car at idle.

Some experienced motorists also recommend getting rid of all air jams.

OVEN RADIATOR

Often the reason for the lack of heat in the car is the heater radiator on a VAZ. The VAZ 2114 heater radiator is designed to transfer heat from the coolant passing through it into the car interior. Over time, this element becomes clogged with dirt and debris, and coolant does not pass through it. Someone is trying to flush the system by adding special chemical liquids to the antifreeze, but practice shows that nothing better can be thought of as a replacement. Replacement is more expedient, the radiator is generally inexpensive, and removing and installing it again is quite troublesome. The part is also replaced if antifreeze begins to leak in the cabin. All stove radiators (RS) can be divided into three types according to the material of manufacture and type of manufacture:

1. Prefabricated aluminum;
2. Non-prefabricated aluminum;
3. Copper (brass).

The aluminum radiator of the Dimitrovgrad Automotive Aggregate Plant (abbreviation DAAZ) is considered factory-made.

In turn, aluminum parts may not be original. As a rule, they are significantly cheaper than factory spare parts, but the quality varies.

Car owners do not have a consensus on which cooling radiator is better to install in the stove on a VAZ 2114, but original spare parts are definitely the most reliable. Among the manufacturers of parts we can note:

• DAAZ;
• LUZAR;
• Pramo;
• Fenox;
• Kraft;
• Bautler;
• "Orenburg radiator".

The cost of all radiators is different; copper parts are considered the most expensive. You should know that the radiator of the VAZ 2115 (VAZ 2113) stove is absolutely identical to the stove element of the 2114 model, so they are completely interchangeable. In addition, the spare part can be easily installed in VAZ models 2108-09-099, as well as ZAZ 1102 (Tavria), without any modifications.

There are many negative reviews about the RP company LUZAR. Buyers note that they do not heat the interior well and often leak. Therefore, it is worth considering whether it is worth purchasing the products of this company.