Troubleshooting Of Automotive Radiator Fan

- Dec 18 2018 - Failure 1. Does the car's cooling fan not turn during operation?
Reasons: 1. The engine water temperature does not meet the starting conditions of the cooling fan, and the temperature is low. 2. The engine diagnostic instrument can be used to test the function of the heat dissipation fan. If the heat dissipation fan can rotate normally, the circuit is normal, check the thermostat.

Failure 2. Automobile cooling fan does not turn air conditioning does not refrigerate.
Reason. First, check the temperature control switch of the electronic fan. The switch has no problem checking the fault of the electronic fan itself. Only when the electronic fan is in normal operation, can the evaporator of the air conditioning be heat dissipated and the air conditioning system be refrigerated.

Failure 3. High-grade non-turning of automotive engine cooling fan
The reason is that the high water temperature of the engine is mainly caused by the failure of the electronic fan to start. The water temperature will be normal after the failure of the electronic fan is eliminated. If the electronic fan does not work, first check whether the connector is not in good contact, check the power supply and iron connection of the electronic fan, check whether the fan is stuck, check whether the fan motor is burnt, and so on. These factors will lead to the electronic fan can not start. It is recommended that the vehicle be repaired in time to 4S shop, and drive on the road after troubleshooting.

Failure 4, the air conditioning fan is loud.
The reason is to see if the fan has a place to grind the casing, check whether the fan pages are deformed, and whether the bearings are damaged, whether foreign bodies enter the fan.

Failure 5. Frequent start-up of heat dissipation fan after extinguishing
The reason is to cool the engine.

The cooling system of ordinary vehicles also stops working after quenching, which often causes the engine temperature to rise after quenching, causing damage. So now high-end cars have set up automatic cooling function. The power supply of the radiator is directly connected to the battery. The temperature of the engine is still very hot after quenching, so the cooling fan still works for a period of time, and then stops until the temperature is cooled, so as to avoid the automobile self-ignition caused by high temperature.