The car will show how to repair the high temperature when driving

1. Fault phenomenon:

2. Possible causes.

1) The cooling fan does not rotate. The cooling fan may be controlled by a thermostat switch; It may also be controlled by a water temperature sensor.

2) Insufficient cooling medium. Antifreeze: High-end cars are required to be filled with antifreeze all year round; Water or distilled water: temporary substitute; The water tank cover is leaking.

3) The thermostat is damaged. If you want to remove the thermostat, you should plug the small circulation at this time, so as to ensure that all the coolant is dissipated by the water tank; When installing a new thermostat, you should pay attention to the water hole, such as Santana does not have a water hole, at this time, a 6mm drill bit should be used to drill a hole. One function is to be used as a marker; Another function is that during the heating process of the car, the temperature difference between the two sides of the thermostat is generated, so that the thermostat is accurately opened with the water temperature.

4) The water tank is clogged. External blockages should be removed with water or gas; Internal blockages affect coolant circulation and create pressure, which can result in two outcomes, one is a leaking water tank or the other is a particularly high water temperature at high speeds.

5) Pump failure. The impeller slips or gets stuck, causing the timing belt to break; The impeller is deformed.

6) Cylinder corrosion. The combustion chamber and the waterway are flushed, and at this time, the water will be drained from the drain pipe or white smoke will be discharged, resulting in a frequent shortage of water in the water tank; The waterway and the oil channel are flushed (the oil is white when there is water); The waterway and the waterway are rushed, resulting in poor heat dissipation of the cylinder block, especially at high speed; Blocked waterways.

7) Incorrect ignition timing (corrected with timing lamp) and excessive oil pressure.

Check for water leaks. If not. It is necessary to see if the antifreeze is too dirty or clogged. At the same time, check whether the temperature sensor circuit is normal. If the water is too dirty, you need to clean the water tank. Replace with a new antifreeze.

First: first check whether the cooling fan of the water tank is running at high speed. If you don't have high speeds, you need to check the water temperature sensor.

Second: touch the upper and lower pipes of the tank with water. See if there is a temperature difference. If there is no temperature difference, it means that there is air resistance in the water tank, which hinders the flow of antifreeze, which is poor heat dissipation.

Third: See if the cooling water tank is blocked. If the tank is clogged, it needs to be replaced.

As long as you can't ask the red line, there is no problem, because the weather is higher than the hot water! You touch the upper and lower pipes of the water tank, whether there is a temperature difference, whether the fan is rotating! If there is a temperature difference fan, and the fan also rotates when the temperature is high, then there is no problem!

What car!?Is there a shortage of coolant!?

It is possible that the driving time is too long, or the temperature in the car is too high, the gear speed is too fast, the frequency is too high, or the display is malfunctioning.

It is likely that the water temperature of the engine source has changed, it is very likely that the state of the electronic wind and fire fan has failed, it may be because the ventilation and heat dissipation are not good, or because the coolant is insufficient, and it may also be because the car temperature sensor has failed.

It may be that the temperature inside the car is too high, or it may be caused by the car's engine running too fast, or it may be caused by the lack of coolant crack source in the car, so it will cause the temperature to display abnormally.

It may be that the thermostat is broken, it may be that the water in the water tank is not enough, it may be that the engine is heating too much, it may be that the contact is poor, it may be that you have turned on the heater.

The condenser of the water tank and air conditioner is generally located at the front of the vehicle. When driving at high speeds for long periods of time, the tank and condenser can become clogged with insects and dust. Coupled with the catkins in spring, the heat dissipation effect of the tank condenser will be worse.

When driving at high speeds, the water temperature is not too high due to the fast airflow. At low speed and idle, when only the water tank condenser is used to dissipate heat, the water temperature will become higher due to poor heat dissipation. Remove the water tank lid and clean the bugs and dust with high-pressure air, then wash it with water.

The first water temperature sensor is faulty. If the engine water temperature does not rise, there may be a problem with the water meter. A faulty water temperature sensor can cause the water temperature gauge pointer to not work properly, or it can create the illusion that the water level cannot rise.

Even if the engine water temperature is high, the water temperature gauge may not change. The failure of the water temperature sensor will directly affect the state of the engine and will also cause the signal of the water temperature gauge. Or when the signal is inaccurate, the cooling fan does not turn on, and the water meter does not indicate.

Faults can also manifest as the engine is unable to precisely control the amount of fuel injected and can cause the mixture to be too thick or too thin.

Therefore, heat dissipation regulation is also very important, and the cooling fan is one of the important components of engine heat dissipation regulation. Under normal circumstances, when the engine water temperature reaches a certain level, the cooling air will be turned on automatically. The main purpose is to accelerate heat dissipation and also to prevent the engine from overheating.

If the air conditioner is still turning when the car is cold, it is very bad. It is not conducive to the rapid cooling of the engine, and it will also increase the fuel consumption of the car.

Confirm that the liquid level in the coolant replenishment tank is appropriate; Start the engine again and observe the water temperature gauge, which gradually increases. Holding the water pipe on the water tank in my hand, I feel that it is gradually getting warmer; With the sewer pipe in hand, the temperature is almost constant. When the water temperature reaches 80, the downcomer begins to heat up gradually until it is the same temperature as the downcomer, and it feels hot.

The engine continued to run, and the electric fan started to run at about 95 water temperature, and the water temperature dropped slightly, and it stopped running for about 1 minute. It's normal to repeat this way.

Drive the car to the auto repair shop immediately and let the auto mechanic help you check what is wrong? Then go to repair it in a targeted manner.

Maintenance. Because the temperature display of the car is abnormal, the sensor is faulty, so it should be repaired.

The temperature of the car is not normal, how to solve it?

1.The normal working temperature of the engine is generally around 90. Once the water temperature scale on the dashboard exceeds 90, the owner is wary of the engine "boiling".

In fact, if the water temperature is too high or too low, it can have a detrimental effect on the engine. Too high a water temperature can cause the tank to burst, the piston to break, and the cylinder to be pulled.

Increased fuel consumption. Generally speaking, if you find that the water temperature is too high, you should check the coolant immediately.

Insufficient or ineffective coolant can cause the tank temperature to rise. If you notice a coolant leak, fix it as soon as possible.

2.If the cooling fan fails, the heat generated by the vehicle at high speed will not be transferred to the coolant in time, affecting the heat dissipation and causing the engine to "boil". Once the water pump fails, it causes the engine cooling system to malfunction, causing the engine to "boil".

Generally, if there is a problem with the water pump, it may be that the bearing is locked or the impeller is damaged, and it should be repaired in time. In addition to paying attention to the "boiling" of the engine, the owner cannot ignore the problem of low water temperature. If the water temperature is too low and the mixture does not burn sufficiently, the engine power will decrease.

Often, a faulty thermostat or a frequent cooling fan can cause the engine water temperature to be too low. The electronic thermostat is read with a car diagnostic computer.

The fault can be confirmed by analyzing whether the opening of the electronic thermostat is normal.

3.If the electronic thermostat is faulty and the coolant is not circulating properly, then the water temperature is too high. Replace the electronic thermostat.

The 4S store will be free of charge during the warranty period; If the warranty period is exceeded, the replacement cost of the 4S shop is about 2000-3000 yuan, and the replacement cost of the repair shop is about 1500-2000 yuan. If the antifreeze is not changed for a long time.

Or use water instead of antifreeze for a long time, which can easily cause rust inside the tank. Moreover, this situation is very common in family cars of 6 to 10 year olds! But!

Long-term water use can produce limescale, which can lead to clogging of the inside of the tank. Acids build up and gradually corrode the tank, causing more and more corrosion inside the tank. This will affect the heat dissipation efficiency of the tank!

First of all, you must observe the change of engine water temperature, and then you must observe whether there is a problem with the temperature display, check the working condition of the connection circuit, and then check whether your gasoline combustion is sufficient, check the engine, check whether the emissions exceed the standard, and check the branch leakage shed to check a drop pipe.

If the water tank and Chunbi condenser are blocked by dust, they should be cleaned with high-pressure air, and then cleaned with water.

Go to the local professional car 4S shop to make an adjustment of Lu Ji, and you can also manually adjust it in your own car, but in this case, the deviation of Wen Pao Zen degree should be within 3 degrees.

It is very likely that the vertical section has a problem due to the failure of the water temperature sensor, so it is necessary to reconnect the circuit or replace the water temperature sensor, and the temperature can be normal.

First of all, check whether the engine is abnormal and whether the cooling fan is abnormal.

Touch the temperature of the upper and lower water pipes with your hands to judge where the fault is, 2When you find that the water temperature of the car is too high, do not turn off the fire immediately, at this time, the piston, cylinder, crankshaft, etc. are in a state of high temperature expansion, and the soft metal may fall off after the fire is turned off, and some even cause the cylinder to stick, 3If the water temperature is too high during driving, it must not be flushed with cold water, which may lead to the cracking of the cylinder; At the same time, don't be in a hurry to open the lid of the water tank, so as not to squirt out the hot water and hurt people again, 4Open the engine cover, check whether the coolant of the auxiliary water tank is too low, in this situation, if possible, you can add coolant, if there is no coolant, you can also add clean water to replace it temporarily, 5Let the engine run at high speed, gently unscrew the water tank cover until the gas is just released, at this time, some of the cooling water will flow out with the gas, and repeat this many times until you feel that the gas is exhausted.

Answer: 1. Insufficient antifreeze. For example, antifreeze leakage, natural wear and tear, etc., should be repaired or added in time.

2. The cooling fan does not rotate. Some cooling fans are controlled by the temperature of the coolant, and some are constantly rotating, the main function is to help the engine dissipate heat, if the cooling fan does not rotate in the case of high engine temperature, the fan must be faulty. 3. Thermostat failure.

The thermostat is blocked, the large circulation cannot be opened, and the heat dissipation is not good, and the engine water temperature will rise sharply. 4) The water tank is clogged. First of all, the outside of the water tank, if there is a large amount of dust accumulation outside the water tank, the water temperature will rise if the heat dissipation is not good, and the water gun can be rinsed.

In addition, there will be rust inside the tank for a long time, and if the quality of the added antifreeze is not good, it will be even more so, and the water tank needs to be cleaned in time. 5) Pump failure. Replace the water pump.

6. The internal waterway of the engine is abnormal. For example, waterway blockage, waterway erosion and other failures, but such failures rarely occur.

Cars can also have a high fever just like people, what should I do if the car is hot?

How to deal with the high temperature of the car display: 1. First open the external circulation in the car, exhaust the hot gas, pay attention to the tuyere to go down, and open all the windows at the same time. At this time, it will be more comfortable to turn on the air conditioner, and the fuel consumption will not be very high.

2. You can open the window of the driver's seat and open and close the door of the co-pilot repeatedly. The temperature in the car will drop in about 2 minutes. Because the hot air in the car is on the liquid core, and the cold air is below, the back and forth opening and closing of the door can bring in part of the cold air, and the temperature inside the car will also change.

3. Take a little alcohol and a lot of water to make a spray according to a certain proportion, and then spray it around the car, which can also achieve the effect of cooling. 4. You can open a small gap in the front two windows and the back side of the window to ensure the air circulation inside the car.

The solution to the high temperature of the car.

1. When we encounter an alarm of high water temperature, we should first slow down, and then drive the car to the side of the road, do not rush to turn off the engine, because the water temperature is too high, which will cause the temperature of the piston, steel wall, cylinder, crankshaft, etc. to be too high, and the oil will become thinner and lose its lubrication.

If the ignition is turned off at this time, the parts are in a state of expansion, and the gap between the accessories is very small, which will cause some soft metals to fall off after the shutdown, and even cause the cylinder to stick if there are sharp drawbacks. Therefore, do not turn off the heat immediately after you find that the pot is boiling, but keep idling for the time being to try to cool down.

2. When cooling down, do not pour cold water on the engine, which may cause the engine block to crack due to quenching. The correct way is: put on gloves, add a multi-folded damp cloth to the water tank cover, gently unscrew a small slit in the water tank cover, wait for the water vapor to slowly drain out, and after the water tank pressure drops, add cold water or antifreeze.

3. Due to water seepage in the water pipe and insufficient cooling water, distilled water or pure water can be supplemented for emergency use, and maintenance can be carried out when it is convenient. Just be careful not to open the lid of the water tank when heating the car to avoid being burned by the water vapor sprayed by the strong pressure inside. If there is enough water, look at the fan behind the tank, even after the engine is turned off when the water temperature is high.

If the fan does not move, turn the fan blades first to see if the fan motor is stuck, and you can easily turn it under normal conditions. If there is no problem with the motor, check the fan fuse, which is one of the reasons for many occurrences, especially in the summer when the electricity consumption is high.

Thermostat failure is also the cause of high water temperature, once the failure will cut off the cooling water circulation, when the water tank above and below the two thick glue pipes have obvious temperature difference, that is, the thermostat is damaged and faulty, need to be removed and replaced, which is generally handed over to professionals to deal with.