Why turning on a fan on a cold engine is dangerous and how to fix the problem

Published: 01/28/2021

• Messages 10
• Insufficient fluid
• Diagnosis and common causes of cooling system problems
• What to do if the radiator cooling fan runs constantly
• Closes the sensor
• Lack of fluid in the unit
• Confinement of mass
• Main types of radiator cooling fans
• Why does the cooling fan turn on on a cold VAZ 2114 engine: find out the reasons
• A LITTLE ABOUT THE ENGINE COOLING SYSTEM
• avtoexperts.ru
• RESULTS
• What's the result?

Messages 10

1 Topic by mastepanov2011 2017-03-04 23:02:53

• mastepanov2011
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• Car: VAZ 2111 1.5 v8

Topic: Resolved: Fan comes on when ignition is turned on but does not turn off

Good evening guys, the problem is that when the ignition is turned on, the fan is triggered. I changed the relay to another one, it didn’t help, the fuse is intact, when you remove the chip from the dtozh, the carlson switches on. I think it’s the dtozh? I read articles, but I didn’t really understand. 2111 8th grade engineer.

2 Reply from krasnopolskaya.y 2017-03-04 23:10:38

• krasnopolskaya.y
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• Registration: 2016-02-29
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• Auto: 2112

Re: Resolved: When the ignition is turned on, the fan comes on, but does not turn off

open circuit of the sensor behind the thermostat

3 Reply from “Robotron” 2017-03-05 08:21:17

• "Robotron"
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• Registration: 2015-11-22
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• Car: VAZ - I turn it myself

Re: Resolved: When the ignition is turned on, the fan comes on, but does not turn off

The DTOZH itself is faulty or the circuit itself to the sensor, sometimes the chip itself is acting up to the sensor and it wouldn’t hurt to clean out all the masses. lada2111.rf/spravka/749-massa-2110.html

4 Reply from Patroclus 2017-03-05 14:01:31

• Patroclus
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• Car: Lada Priora 2171 Wagon: VESTA

Re: Resolved: When the ignition is turned on, the fan comes on, but does not turn off

wait, how does KARLOSON work when the chip is removed, IF IT ALREADY SPINS WHEN THE IGNITION IS TURNED ON??

5 Reply from mastepanov2011 2017-03-05 18:15:32

• mastepanov2011
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• Messages: 137Thanks: 16
• Car: VAZ 2111 1.5 v8

Re: Resolved: When the ignition is turned on, the fan comes on, but does not turn off

I removed the ignition on chip, it turns right away, and when the chip on the sensor is in When the ignition is on, after 5 seconds it turns on.

Thanks, I'll take a look.

6 Reply from Patroclus 2017-03-06 00:18:29

• Patroclus
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• Registration: 2014-07-05
• Messages: 637Thanks: 104
• Car: Lada Priora 2171 Wagon: VESTA

Re: Resolved: When the ignition is turned on, the fan comes on, but does not turn off

Check the temperature sensor circuit for the controller (it has TWO wires), with one being the sensor for the tidy. one wire goes to ground, ZP, the second to the controller O. The clamp is connected to them and removed from the dates, it should be less than 5 volts, if not, look at the wires

Insufficient fluid

Very often the sensor reacts to a small amount of liquid in the system. At the same time, the existing antifreeze heats up extremely quickly. This starts the fan. The most common cause of such a malfunction is a simple oversight. Drivers often forget to control the amount of coolant. It gradually evaporates, and as a result the radiator is half empty.

A small amount of liquid heats up very quickly, and the temperature of the liquid does not coincide with that of the engine. It turns out that the engine has just been started, it has not yet warmed up, but the cooling fan is already threshing, since the liquid has already heated up. The problem can be solved quite simply, you need to add antifreeze and bleed the cooling system to rid it of air pockets.

The fan may also short to ground. This happens for various reasons, but most often due to poor screwing of the corresponding wire to the body. In this case, the fan is connected to the battery directly. And he starts working non-stop. The main problem here is the possibility of the car catching fire if there is a stronger short circuit with greater heating of the wires.

To resolve, check all connections related to the sensor. All wires must have intact insulation. They must also be securely fastened to each other. Any small gap can lead to a problem.

Many modern cars are equipped with thermostats with sensors. This allows you to more efficiently manage the cooling system. But such management has its drawbacks. In particular, when the system breaks down, various “miracles” can begin. If the sensor installed on the thermostat fails, the fan will run constantly. The reason for this is the following. The control unit, not receiving signals about the operation of the thermostat, goes into emergency mode. At the same time, just in case, the fan turns on; in case of such an error, it will work constantly.

Checking the sensor is quite simple. Like any temperature sensor, in normal condition, it should show infinite resistance when the engine is cold, in all other cases it should show from 100 to 500 ohms. If the check shows different readings, it is better to replace the sensor. Fortunately, it is quite inexpensive.

Air temperature sensor

. Some modern cars are equipped with additional oncoming flow temperature sensors. That is, they react to the ambient temperature. If the indicator specified in them is exceeded, they give a command to turn on the fan. This is done to increase the cooling efficiency of the motor.

This scheme is often found on foreign cars that have sandwich radiators consisting of 3 layers. In this case, the fan will work almost all summer even on a cold motor. It is not recommended to disconnect the sensor; this may lead to engine overheating.

Contacts

. On cars with fan control via an ECU, problems with contacts may occur. They oxidize and stop transmitting signals to the control unit. It, in turn, goes into emergency operation mode, which is expressed by turning on the fan, as well as changing the operating mode of other systems. In general, it is advisable to clean contacts twice a year in spring and autumn. But, if your fan suddenly starts spinning from the moment you turn on the ignition, clean the contacts and coat them with a special lubricant.

Air conditioner

. On some models, the air conditioner has much in common with the cooling system. Therefore, a clogged air conditioner radiator causes the fan to spin. This can be treated by flushing the radiator. Ideally, it is better to flush both radiators at once. This will make the operation of this paired system as efficient as possible.

Conclusion

. For many drivers, the principle of operation of the cooling system is a dark forest. People start thinking about how and what works there only when there are signs of a malfunction. That’s when people start wondering why the cooling fan turns on when the engine is cold. This is very scary for many inexperienced drivers. In fact, this is not a very terrible breakdown, but for your own peace of mind, it is better to check the cooling system and fix the breakdown.

Air jams

It is no secret that the cause of excessive heating of the liquid is air locks. They appear due to errors when replacing antifreeze, as well as due to leaks in the cooling system. As a result, the liquid heats up unevenly, which leads to unstable operation of the fan, with frequent starts when hotter liquid enters the radiator.

Before troubleshooting, be sure to check the system for fluid leaks. Having eliminated them, they move on to clearing out the traffic jams. For this you will need a compressor. Unscrew one of the tubes supplying coolant to it from the throttle. Next, you need to connect a compressor to the neck of the expansion tank and supply compressed air to it. Usually a couple of minutes is enough to clear all existing traffic jams.

Sensor short circuit. Quite often the sensor shorts out. In this case, the fan either threshes without stopping, or turns on much earlier than scheduled

If you have such suspicions, you need to pay attention to the time the fan turns on and compare the turn-on temperature with the standard one. If the temperature turns out to be lower, then you just need to change the sensor and everything will return to normal.

Insulation for the winter

. Many car enthusiasts install special insulation on the radiator in winter, this allows them to reduce the time it takes to warm up the car and save fuel. But during thaws the air temperature is quite high. If there is insulation, the motor does not cool enough, which forces the fan to work more intensely. To eliminate the cause, simply remove the insulation from the radiator.

Conclusion. The cooling system of the machine must always be in good condition. Therefore, the driver must carefully monitor the condition of this system.

It is especially important to correctly find the reason why the cooling fan constantly works or turns on frequently. This is certainly not a fatal problem, but ignoring this signal can lead to serious engine malfunctions.

Source

Diagnosis and common causes of cooling system problems

Closing contacts

One of the most common causes of this breakdown is a banal short circuit of the contacts of the coolant temperature sensor. In this case, when the ignition is turned on, the cooling fan turns on, since electric current is constantly supplied to the fan due to a short circuit. The consequence of such a malfunction may be, perhaps, accelerated discharge of the car battery.

We recommend reading an article on the topic: how to extend the life of a car battery. This article talks about the reasons for the short life of the battery, how to actually extend it, as well as the main signs of battery failure.

To diagnose this malfunction, you should disconnect the sensor and use an ohmmeter to measure the resistance at its contacts. If the sensor is working normally, then the resistance will be extremely high (the readings are only nines, which is analogous to “infinite” resistance). If the resistance is low, then the contacts are closed and the sensor must be replaced.

Also similar symptoms include a short circuit of the fan terminals to ground, in which case it will also work constantly as soon as the ignition is turned on. Since the voltage is supplied directly from the battery.

Small amount of antifreeze

Another common problem is too little coolant. It is to its temperature that the DTOZH reacts. With a small amount of antifreeze, the liquid warms up much faster than the engine itself warms up, as a result the fan turns on too early. Add fluid to the required level and, just in case, check for leaks in the cooling system.

Thermostat and its sensors

On some modern cars, the cooling system is equipped with thermostats with sensors that regulate the operation of the cooling system more efficiently. However, this design is more complex in structure than a conventional one, and due to its complexity it is susceptible to various problems. If the operation of a specific sensor that is connected to the thermostat is disrupted. Or the cooling control system does not receive data from the thermostat sensors, then, as a rule, it “goes into protection”, turning on the fan for constant operation. Checking these sensors is, in principle, similar to checking the contacts of a conventional DTOZH. We measure the resistance, and if it is low, then the sensor should be changed.

Oxidation of contacts

It is worth noting that the ECU can also “go into defense” in cases where the fan is controlled through the on-board computer itself. The reason for this may be problems with contacts. As a rule, contacts tend to oxidize over time, which greatly complicates the transmission of signals from sensors to the ECU. And if the required signal does not pass through at all, then in this case the control unit forcibly turns on the cooling fan, regardless of the engine temperature.

To eliminate it, you just need to clean the contacts and coat them with insulating grease to prevent the spread of corrosion. By the way, this procedure is recommended to be carried out 2 times a year to avoid unpleasant situations at the most inopportune moment.

Let's watch the video, the reason for the periodic switching on of the fan on a cold engine (Mazda 6 car):

Problems with the air conditioning system

On some vehicles, the air conditioning radiator is directly connected to the engine cooling system. And when the radiator of the air conditioning system becomes clogged, the operation of two systems at once is disrupted. Although the fan does not turn on immediately in this case, this problem can lead to much more serious consequences, including engine overheating.

To fix it, you need to clean the radiator, or preferably two at once. For more productive operation of these two interconnected systems.

That's all we wanted to say on this issue. In fact, this is not the worst malfunction, but if ignored for a long time, it is fraught with certain consequences. Therefore, you shouldn’t delay repairs either, and if the engine cooling fan turns on when you turn on the ignition, it is recommended to carefully check the cooling system for problems and fix the breakdown as soon as possible.

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Auto-assistance

On the VAZ-2110, in the engine cooling system, there is an electric fan, which turns on when the coolant temperature reaches 100-105 degrees Celsius. It is to this temperature that the fan switching sensor, which is located on injection engines in the outlet pipe of the cylinder head, is configured. Its factory marking is LS0112. In addition, the electrical circuit for turning on the fan includes fuse F7, located in the mounting block and a fan relay located in the car interior behind the right panel of the front console.

Therefore, if malfunctions occur that lead to the engine cooling system fan not turning on, you will have to look for this reason precisely in those nodes that were reported just above. Although there is one more point not related to the electrical circuit for turning on the fan.

The fact is that at a temperature of 100 degrees, water, which is an integral part of antifreeze, boils at normal atmospheric pressure. If the safety valve located in the cap of the expansion tank is faulty and there is atmospheric pressure in it, and the fan switching sensor has an operating temperature of more than 100 degrees, then the coolant will boil and the fan will not turn on, although the entire electrical circuit for turning it on is completely working. We change the cap of the expansion tank to one that will maintain the pressure in the engine cooling system above atmospheric pressure, then, according to the laws of physics, the boiling point of water will rise above 105 degrees, which means that the fan will have time to work.

When troubleshooting an electrical circuit, you need to start by checking fuse F7, for which you will have to open the mounting block. If it is intact and its contacts are not oxidized, then our further path lies to the fan switch sensor. You can check its performance yourself, without computer diagnostics, as follows.

The first thing to do is to warm up the engine to a temperature exceeding one hundred degrees, and then turn it off and turn on the ignition again. Open the hood of the car and remove the terminal from the fan switch sensor. If after this action the fan of the engine cooling system starts to rotate, this will indicate that it is working, but the sensor needs to be replaced. If the fan does not work, then this will indicate a malfunction, and the switch on sensor in this case will be operational.

To troubleshoot the fan motor, it will have to be removed from the vehicle. Possible causes of the malfunction may be: wear of the commutator brushes or their freezing and short circuit in the armature winding, but in this case a characteristic smell coming from the electric motor will be felt.

If under the hood of a VAZ2110 car all fan switching units are working properly, then you need to check its switching relay. To do this, remove the trim on the right side of the front console by unscrewing two screws. There you will see three standing relays. Typically, the fan switch relay is located in this row, the outermost one, towards the front of the car body. But, in order to make sure that it is located in this place, it is necessary to examine the bundle of wires suitable for it. The colors can be seen on the electrical diagram of the VAZ-2110. The test is carried out by replacing the fan relay with a known good one.

Provided that the driver was unable to independently find the cause of the malfunction in the operation of this system, then in this case, he will have to contact a service station to conduct computer diagnostics of the electrical circuit for turning on the fan.

What to do if the radiator cooling fan runs constantly

Another problem that can arise with the radiator cooling fan is its constant operation. If the electric motor does not turn off or turns on too early, when the coolant temperature is still far from the critical zone, it is necessary to determine the cause of such a malfunction and eliminate it.

Running the radiator cooling fan without stopping may be associated with the following problems:

It is worth noting that constant operation of the cooling fan is not as dangerous as its complete failure, but not in a situation where the problem is associated with a stuck thermostat and overheating of the engine.

Content

• Sensor short circuit
• Insufficient fluid
• Weight
• Thermostat

There may be several reasons for this behavior. It is advisable to find the breakdown, because a constantly running fan is not only a discomfort, it may be a harbinger of more serious malfunctions. Although it should be noted that a constantly running fan is less dangerous than its complete failure.

Diagnostics

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On injection cars, checking and finding the cause can be much easier. It is enough to carry out computer diagnostics. Typically, error codes quite accurately indicate the cause of the failure. On some models, if there is a “cooling system malfunction” error, the fan will spin constantly. This is protection against overheating. Even after eliminating the problem, it will not stop on its own. Errors need to be cleared. To do this, simply remove the terminal from the battery for a few seconds. Errors that have already been eliminated will be erased, and everything will return to normal.

Closes the sensor

In frequent cases, the fan operates immediately after the ignitor is turned on. This occurs during the process of closing the sensor contact. In this way, it is possible to ensure the constant operation of the blowing object. This method is considered the most harmless in the process of observing breakdowns. If the ignition is in the on mode, this will lead to battery discharge.

To carry out a thorough check, it is necessary to install a cold sensor and measure the resistance at the terminals. If the sensor is working properly, then the resistance indicator will show the process progressing to infinity. With less resistance, the contacts close.

Accordingly, to ensure performance, you will need to change the product. A thorough diagnosis will immediately indicate the presence of breakdowns using a special code. That is, when the sensor turns on, it is possible to determine the indicator.

Common faults

Since the fan is spinning, it needs to be forced to stop and turn on only when there is a real need for it.

There are several main reasons why cooling system fans may turn on when the engine is cold. This is related to:

Each of the points may be the reason why the fan turns on and starts rotating when the engine is cold.

Power sensor

One of the most common reasons why a fan runs on a cold engine is a short circuit in the controller, that is, the sensor.

Quite often it happens that the fan starts when the ignition is turned on. If this occurs at the same time, the contacts on the controller have probably shorted. As a result, the airflow works constantly.

Lack of fluid in the unit

The sensor partially fails with the smallest amount of liquid. Even in the presence of antifreeze, the sensor immediately warms up. This process can disrupt the entire function of the system and cause many problems. Such a malfunction is characterized by a banal oversight.

With careful monitoring, you can get rid of serious problems and breakdowns. To do this, you need to check the amount of liquid. Since during evaporation there is no liquid in the radiator

If there is a small amount of liquid, the temperature reaches the unit temperature. For example, if you start the engine, it will not be completely heated, but the fan will immediately cool down. This process occurs due to the fact that the liquid heats up very quickly in the unit. Problems can be resolved in the simplest way. By adding a little antifreeze, you can avoid air locks in the system.

Confinement of mass

The functioning of the fan depends on different methods, as you have already seen from reading this article. There is another reason that disables the fan's performance. For example, if the corresponding wires are poorly screwed to the body, the fan is connected directly to the battery. It should be noted that in this case, it is necessary to take timely measures to avoid serious problems.

With this option, you can expect the car to catch fire. If a strong short circuit occurs, then all the wires will heat up accordingly. To avoid serious consequences, you should check the connections and wires that have access to the sensor. Reliable fastening of wires and intact insulation reduces the risk of serious consequences.

Which drive is better?

Electric fans have been considered the most promising for several years now. The fact is that a modern car includes a number of electrical devices, the most important of which are sensors. If the sensors and control unit are working correctly, the unit that receives and analyzes the electrical signals can adjust the operation of the actuators so that they operate with maximum efficiency and minimum energy consumption at a particular time.

If the car is equipped with a towbar or climate control, it has two fans. Each of them has a turn-on relay. Let’s take a closer look at what the most popular electric fan consists of.

It is preferable to use the viscous coupling only on SUVs. For example, in UAZ cars adapted for crossing water obstacles, the electronics would fail after contact with water.

Main types of radiator cooling fans

Today there are only two types of fans:

• Mechanical;
• electronic.

Mechanical (works when the crankshaft rotates). To maintain the integrity of the device and blades at high speeds, the fan impeller is connected to the pulley via a hydromechanical drive.

When the crankshaft rotation speed increases, the clutch performs light braking to prevent damage to the device. Although earlier the first models of vases did not have such a device.

Electronic. With the development of technology, electronic drives began to be in demand. It consists of two main components - a control system and an electric motor. The use of electronics made it possible to ensure uniform cooling of the power unit and eliminate the risk of damage to the fan.

Electrically driven elements

As for electrically driven fans, they consist of the following elements:

• Electric motor.
• Electronic control unit.
• Temperature sensor.
• Fan switch relay.

More modern units have two temperature sensors in their design, one of which is installed in the pipe coming out of the radiator, and the second in the thermostat housing. Sometimes it is mounted in a pipe that comes out of the engine. The electronic unit, depending on the difference in the readings of these two sensors, controls the intensity of rotation of the impeller. And it is driven by an electric radiator cooling fan motor.

For the correct operation of this motor, it is also important to have an air flow meter and a device that will monitor the crankshaft frequency (CPCV). After the control unit has received a short signal from all sensors, the information is processed and the electronics activates a relay that turns on the fan

During its operation, the system controls the number of rotations and can increase or decrease the speed of the impeller. A similar design is now used on most cars and SUVs.

Why does the cooling fan turn on on a cold VAZ 2114 engine: find out the reasons

Sometimes motorists are faced with the fact that the cooling fan turns on on a cold VAZ 2114 engine. Such a malfunction is certainly quite unpleasant, since it can indicate serious problems in the cooling system. We will talk about the reasons for this phenomenon, as well as how to eliminate it, in today’s article. Cooling fan VAZ 2114

Cooling fan

Before we talk about troubleshooting, we should say a few words about the cooling fan itself. It serves to create a flow of air directed towards the radiator and serves to cool the latter. The fan turns on automatically when the temperature sensor located under the radiator is triggered. When the coolant reaches a temperature of 100-105 C, the sensor closes and starts the rotation of the fan, which blows over the radiator and cools it. As you can see from this, normal fan activation is only possible when the engine is fully warmed up, and starting it when the engine is cold indicates obvious problems in the system. Operation of the VAZ 2114 cooling system

Possible causes, their search and solution

There may be several reasons why the cooling fan turns on on a cold VAZ 2114 engine. The most likely of them are:

• low level of coolant in the system;
• sensor failure;
• fan short circuit;
• thermostat failure.

You should start your search with the first reason, since it is the most probable and at the same time the most quickly resolved. When the coolant level is low, the sensor can operate almost immediately after starting the engine, thus turning on the fan. This is due to the fact that a small amount of liquid heats up very quickly, while the engine itself is still “cold”. In order to solve this problem, you just need to add coolant to the required level.

If you measure the resistance at the sensor contacts with the engine off, the tester should go off scale or show 0, depending on the model of the device (that is, the resistance will tend to infinity). If the multimeter shows very specific numbers, then the sensor is permanently closed, and it should be replaced with a new, similar one. Temperature sensor VAZ 2114 If the sensor also turns out to be working, then you should check the fan. Sometimes (especially if the housing is poorly screwed on or the wires are poorly insulated), it shorts to ground, as a result of which the fan starts working directly from the battery, without the participation of an electronic circuit with a sensor. This cause can be eliminated by checking and tightening all fasteners, as well as insulating exposed wire sections. It should be remembered that such a malfunction is quite serious and can cause:

Rapid fan wear. Battery discharge (if you leave the ignition on without the engine running). Car fires (due to strong heating of wires).

That is why special attention should be paid to searching for possible faults (exposed sections of wires). The last reason that can lead to spontaneous turning on of the fan is a breakdown of the thermostat (or rather the control sensor installed on it). The bottom line is this: if the thermostat sensor fails, the electronic unit automatically starts a fan to cool the system, since the electronic unit cannot accurately control the temperature of the liquid. A kind of “reinsurance” is performed in case of possible overheating. If the indicators obtained during measurement are outside the limits of this norm, then the sensor should be replaced with a new one. Finishing the conversation about the possible reasons for the spontaneous turning on of the fan, we should say a few words about how to prevent them

If the indicators obtained during measurement are outside the limits of this norm, then the sensor should be replaced with a new one. Finishing the conversation about the possible reasons for the spontaneous turning on of the fan, we should say a few words about how to prevent them.

To do this you will need:

• promptly monitor the coolant level in the system;
• periodically check the condition of the electronic wires of the cooling system;
• clean the sensor contacts from emerging oxides (it is recommended to carry out a similar procedure twice a year - in autumn and spring).

If you notice that the fan begins to turn on on its own, then the search for a breakdown cannot be put off until later, since the consequences (in some cases) can be extremely serious.

When is it advisable to repair it yourself and in the service?

If your car has problems with the electric fan of the cooling system, you can fix the problem in the sequence described above. Almost any repair can be done by yourself. Since the main problems come down to faulty sensors, replacing them will not be difficult. It is enough to dismantle the faulty part and install a new one in its place. If the problem lies in bad contacts, then they can be cleaned or, as a last resort, the connectors can be replaced. If you are not confident in your abilities, then in order to avoid new problems it is better to contact the service.

Video: solving the problem of a constantly running fan

To decide whether to carry out independent repairs in case of problems with the cooling fan or seek outside help, you can familiarize yourself with the approximate prices for a particular operation.

Table: cost of repairing the cooling system with your own hands and in the service

Constant rotation of the cooling fan on a cold engine is not normal. Therefore, you should deal with the malfunction that has arisen, find and eliminate the cause of its occurrence in order to prevent rapid wear of the device. Diagnostics consists of checking the coolant level, as well as the elements responsible for the operation of the electric fan, which every car owner can do.

Source

A LITTLE ABOUT THE ENGINE COOLING SYSTEM

To understand the role of the fan in the engine cooling system, it is necessary to consider in detail how this system works. It consists of many interconnected elements, such as a radiator, thermostat, expansion tank, and so on. But the main role in the overall structure, of course, is played by the coolant jacket.

Imagine that there are small grooves on the sides of car cylinders. They contain antifreeze. It absorbs most of the heat as the piston rises and falls.

So that the engine cooling process does not stop for a moment while driving, antifreeze constantly circulates through the system. If its temperature is below 80 degrees, then it goes in the inner circle, but as soon as this temperature line is crossed, everything changes radically. The coolant is directed to a large circle through a valve, which is also a thermostat.

When passing a large circle, the coolant enters the honeycomb radiators. It is opposite this part that the engine cooling system fan is installed. As soon as the need arises, it is activated and helps the heat dissipate into the atmosphere.

After the antifreeze passes through the honeycomb radiators cooled by the engine fan, it will again enter the cylinder grooves, but its temperature will be much lower. This process is not interrupted for a single moment while the car is moving.

avtoexperts.ru

When the engine is running, the temperature in the combustion chambers reaches about 1500-2000 degrees Celsius. If you do not remove heat from the cylinder walls, then overheating of the engine is inevitable and, as a result, expensive repairs or replacements.

Cooling Fan

To maintain the operating thermal conditions of the engine (+90 degrees) in any operating conditions, a cooling system is provided. It includes the following elements:

• Radiator; • Expansion tank; • Pump; • Thermostat; • Fan; • Temperature and fan sensors; • Set of connecting pipes; • Heater radiator; • Antifreeze.

RESULTS

The fan is an important device for ensuring normal operation of the motor. It helps the structure to cool effectively even at maximum engine speeds

Devices with electronic control units are becoming increasingly popular.

Materials: https://www.autonastroy.ru/pochemu-vklyuchaetsya-ventilyator-ohlazhdeniya-na-holodnom-dvigatele/