What is the reason why the water temperature meter often alarms when the car is driving, and how is

There are two possibilities: 1 the water temperature is really high, 2 the water temperature gauge is problematic.

1. If the water temperature is really high, you should check it, otherwise the cylinder will be burned out.

2. If the actual water temperature is not high, it means that there is a problem with the water temperature sensor or wiring.

3. Check that there is no less antifreeze. When the car is cold, the liquid cannot touch the sensor, and the alarm will be given.

4. If it is the former, you must check it as soon as possible, otherwise it will ruin the motivation.

The point of failure in this case is usually the level sensor on the coolant reservoir, which is usually made of white plastic. This is because after a period of use in the car, the antifreeze level drops, the sensor sends an alarm signal, and the user injects antifreeze through the lid on the reservoir. At this time, because the position of the exhaust hole on the side of the damping pipe of the liquid reservoir is too low, a compressed air column is formed in the damping tube, and the liquid level in the damping tube is far lower than the liquid level in the expansion tank, and is near the alarm point of the sensor.

The solution to this situation is that the compressed air column in the damping tube of the reservoir must first be eliminated to eliminate false alarms. Here's how:

After adding antifreeze during use, the liquid level sensor must be removed from the liquid storage tank, and the liquid level sensor should be installed and tightened after the compressed air in the damping tube is discharged, so as to ensure that the liquid level in the damping tube is consistent with the wave surface in the liquid storage tank, so as to eliminate the occurrence of false alarms.

When the indicator light of the liquid level sensor is always on, please remove the liquid level sensor from the liquid storage tank first, and then install and tighten the liquid level sensor to eliminate false alarms. Note: After adding fluid or replacing the sensor, restart the engine. Use ** antifreeze to avoid damage to the sensor and engine.

The water temperature alarm is not launched, and the first trillion must first determine whether it is really an alarm? If it does call the police, the first thing to do is to check the antifreeze level. Secondly, guess the calendar, check if the electronic fan is working?

The reasons for the alarm of the car water temperature meter are: 1. Lack of antifreeze; 2. The thermostat cannot be opened normally or stuck; 3. The pumping capacity of the water pump deteriorates, resulting in poor water circulation; 4. The cooling fan cannot work normally after the water temperature rises, and the speed is slow. The solution to the alarm of the car water temperature meter is:

1. Lack of antifreeze: check the leakage part and add it to the correct water level after maintenance; 2. Water does not circulate: the thermostat cannot be opened normally or stuck, so the thermostat needs to be replaced; 3. The poor water circulation caused by the deterioration of the pumping capacity of the water pump will also lead to high temperature, which may be due to damage to the pump blades and the need to replace the pump; 4. The cooling fan cannot work normally after the water temperature is in the tomb, and it is necessary to check the fuse, relay circuit or check and replace the fan.

What causes car water temperature alarm? Reasons for the water temperature alarm of the car: 1. The alarm of the water temperature lamp is that the water temperature is too high, the lack of antifreeze, and the thermostat does not open normally or is stuck in a fully closed state; 2. The poor water circulation caused by the deterioration of the pumping capacity of the water pump will also lead to high temperature, and the cooling fan will not work normally and rotate slowly after the water temperature rises; 3. The solution is to change the thermostat or replace the water pump with a wider core; Check fuses, relay wiring, or check to replace fans.

The water temperature warning light of the car is on, and it should be stopped in time for inspection.

1. First of all, check whether there is any water leakage, and repair it in time.

2.Replace the thermostat.

3. Open the engine cover to see if the antifreeze level of the auxiliary water tank is normal, if the antifreeze is too little, you can add antifreeze. If you really don't have antifreeze, you can replace it with mineral water temporarily, but replace it with a new antifreeze afterwards.

Check as above, and if there are no problems, you can continue on the road.