VAZ-2110 (injector): not included cooling fan. Possible causes of fault

The Fan in the cooling system of any vehicle performs an important function. As one of the important components, it provides cooling of the radiator, through which the antifreeze. Usually it should turn on when the temperature of the antifreeze to 100-107 °C. However, there are cases when the VAZ-2110 with injector does not turn on the cooling fan, which leads to undesirable consequences.

Usually the entire system from fuel injection engines operating in automatic mode, but what to do when some of its elements refuses to perform its functions? The fan does not turn on or does not work without rest, the sensor gives the wrong information and so on. Should immediately look for the cause of the malfunction and immediately eliminate it.

Functionality

To the internal combustion engine worked effectively, it is necessary to maintain a certain temperature. This task aims to provide a cooling system, which sometimes gives failures in work. In this case, to avoid overheating engine, the result of which is the failure of cylinder head gaskets and parts Chu.

To understand why the car VAZ-2110 with injector does not turn on the cooling fan, you must know how it works. In good condition, maintain optimal temperature of the antifreeze in the engine that prevents boiling. If you constantly ignore the failure of any element, through an indefinite period of time needed major repairs. And it already promises a lot of costs, but this can be avoided!

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In most cases, the cause of a particular malfunction of the engine is overheating. The temperature in the cylinder after burning of fuel-air mixture up to 2000 °C. this produces a tremendous amount of heat that, if not withdraw, adversely affects some important details. Because, as you know, strong heating leads to a significant deformation of objects.

Cooling System

Typically, the cooling system of any vehicle consists of the following elements:

• Radiator
• Cooling jacket BC;
• Temperature controller
• The connection Spigots and hoses;
• Centrifugal pump;
• Fan motor.

And if a device fails, the car VAZ-2110 with injector does not turn on the cooling fan.

For proper operation of the entire system is needed every element, but the fan still is one of the important components. Its task is to cool the radiator and, accordingly, passes through the liquid when necessary. If he is no longer activated, it affects the efficiency of the system.

How to wire a fan?

Depending on the type of engine, fan operation is controlled by a variety of means. If the motor has a carburetor, the operation of the device controlled thermobimetallic sensor TM-108, located on the housing of the radiator (looking in the direction of motion, it is on the left side). In many automobiles the sensor responds to the maximum temperature of the antifreeze (107 °C). With this value, the sensor immediately sends a control signal to the fan relay, and he begins his work. But what if the car VAZ-2110 with injector does not turn on the cooling fan?

The VAZ-2110, equipped with a fuel-injected powerplants, the fan operation is controlled by the controller, but the sensor is also present. It is located near the thermostat. When the antifreeze reaches its maximum temperature, the sensor sends a signal to the computer, and that only cycles the fan through the pulse in his relay.

Consequences of engine overheating

People and cars in something similar. The healthy man under the hot sun and without a hat, risking a severe blow, which threw him off his feet. The car is tight man, but there is a limit.

When the temperature of engine exceeds the normal, begins the destructive process.

Before understanding, why not turn on the cooling fan for VAZ-2110 with the injector, you need to know about the consequences of overheating. Moreover, its degree depends on stages:

• Weak degree;
• The average degree;
• Strong power.

Weak engine overheating (no more than 5-10 minutes) do not carry any threat, as any experienced driver will quickly react to the situation and will choke the motor. The worst that can happen – melting the pistons, however, most modern cars have a problem for weak overheating will not occur.

Average overheating (20 minutes) is already having a significant impact on the engine. A sample list of troubles that can follow:

• The curvature of the cylinder head;
• Cracks in the cylinder head;
• Burnt gaskets cylinder head;
• Destruction mikolevykh walls;
• Transmission oil through the seals.

However, this is not the worst thing that could happen.

Strong overheating – this is a real threat to the engine. And we are not talking about what is not included cooling fanVAZ-2110 with the injector, but a much more serious things. Damaged all parts of the engine, sometimes even a possible explosion. But it doesn't happen often, because the car protects itself: every piece has its own rate of failure, and for this reason the engine just stops.

The wave of destruction starts its movement from the combustion chamber and gradually affects all parts of the engine:

• Begin to melt and burn the pistons.
• Molten chunks of aluminum pistons touch the cylinder walls, which greatly hampered the progress of the pistons, which leads to their further destruction.
• If the engine continues, the oil starts losing its lubricating properties.
• Due to an overheated oil all friction parts begin to fail.
• Begins melting connecting rod and main inserts.
• Under the influence of the pistons to the crankshaft to break in two two parts.

In the end, it all ends with the piston punches any wall of the block, which means the complete destruction of the engine. Against this background, the problem, why not turn on the cooling fan for VAZ-2110 with injector 16 valves, just a trifle.

Troubleshooting

Many problems can be avoided if the time to eliminate all detected malfunction of the cooling system of the engine. It seems that the track overheating with a sensor is not difficult, but in fact drivers do not always pay attention to it. And old cars, and absent any indication when this problem occurs.

Therefore, you must always remember about indirect signs of overheating. And the first of them – the broken stove that might indicate the boiling of the coolant. In this case the fumes of antifreeze in the system it creates an air tube through which fluid does not flow into the stove.

Also, an overheated engine will start to detonate and make ringing noises when pressing on the accelerator pedal. The walls of the combustion chamber begin to expand, leading to increased clearance. Further movement of the car will inevitably lead to significant loss in capacity and increase in metallic thud.

If not the cooling fan switches on VAZ-2110 with the injector, the reasons must be sought in the components of the cooling system, checking:

• Guard;
• Relay;
• Fan motor;
• Relief valve surge tank cap;
• Sensor.

If the cause has not been elucidated, you should pay attention to the continuity of the wiring, typically all points to it. This will require a tester. After you've found and replaced the open wire, the efficiency of the fan is restored. If you encounter difficulties during diagnosis wiring, you should contact the experts.

The Fuse, motor and relay

To find the cause of the overheating should be, starting with checking the fuse and fan relay. The first of them is located in the mounting block engine compartment. There it is under the label F7 (20A). You need to get it and to visually assess the integrity or use a multimeter.

In most cases does not turn on the cooling fan for VAZ-2110 (injector, 8 valve) it is the fault of the fuse, as it does not pass control signal. Worth it to pull out and visually assess the integrity or use a multimeter. If necessary to be replaced immediately, otherwise you should look for the cause elsewhere. And you should check the fan itself. To do this, disconnect the fan connector and directly through wires to connect the motor to the battery, not forgetting about polarity.

If the drive is OK, then next is to go to the salon because it is here that relay. Its more exact location – another mounting block on the left side relative to the front passenger footwell. Of the three relays necessary the one to the left. To validate, you need to put another relay in place of the old. Then start the car and wait for heating to maximum temperature, while observing the fan. If no result the search continues.

Expansion tank

If not the cooling fan switches on VAZ-2110 with injector, repair it can wait, as it might be the valve cap of the surge tank. Water, which is part of the antifreeze, as we know, boils at 100 °C in normal atmospheric pressure. For this reason, in the cooling system supported a higher level of pressure, and then the liquid begins to boil at 107 °C, at such a value responsive sensor.

When a faulty valve pressure is equal to atmospheric, and the liquid boils at 100 °C is 107 °C, then the sensor is not “sees”, although the whole system is OK. To check the status of the cover is possible only in a visual way, however, to accurately assess her condition in his garage is unlikely to succeed. Therefore, if you suspect a problem it is better to replace an old cover the new one.

Sensor

The Internet today can bring substantial help. Onsome forums you can find questions owners, why not the cooling fan switches on VAZ-2110 with the injector. Causes and pictures while you discuss a few people who mostly refer to sensor.

To test it you should start the engine and wait to heat the coolant to operating temperature. Then you need to unplug the sensor, the controller will determine the open circuit and brings the fan into emergency mode. If it work, then the reason lies in the sensor. We should replace it and for the authenticity check again.

Continuous operation

This phenomenon, though rarely, but occurs. Causes of constant fan operation in this case can be a relay which is closed or open in the wiring device. To eliminate breakage, it is enough to replace the faulty element.

As you can see, it is possible to independently perform diagnostics and determine why the cooling fan won't turn on VAZ-2110 with the injector. The fault can easily be detected during the inspection of each item, however, there can be difficulties. In this case you should address to experts or to start all over again. The final choice is always the owner of the car.