Maintenance method for automobile radiator fan failure：
Problem 1: The cooling fan does not work during the driving of the car
Overhaul method: This problem may be caused by the fact that the engine water temperature does not reach the condition that the cooling fan starts. The auto repairman can use the engine diagnostic instrument to test the cooling fan. If everything works properly, the auto repairman needs to check if it is a festival. The heater has failed.
Question 2: The cooling fan starts frequently after the car is turned off.
This is normal behavior in most cases. After the car is turned off, the cooling system will normally stop working. At this time, the temperature of the engine has not cooled down. For this reason, the cooling fan will continue to work for a while, only after the temperature of the engine has dropped. The cooling fan will naturally stop working.
Question 3: The fan gear position is not high.
First of all, the auto repair master should check whether there is any bad contact in the connector of the fan. In addition, it is necessary to check the power supply of the fan, whether the fan is stuck or not, etc. These factors will cause the fan to have a higher gear position. The situation does not work.
Question 4: Fan noise
If you hear abnormal noise while the fan is working normally, there are 4 cases:
1. The fan wears the outer casing;
2. The bearing of the fan may be damaged;
3. The fan blade is deformed;
4. Some foreign objects have entered the fan.
In the above four cases, the first three need to replace the related parts, and in the last case, only the foreign matter needs to be cleaned.
