Car Radiator Fan Not Working

It may cause the fan to cut in and out or not come on at all.

Car radiator fan not working.

If the fan is not working even when the car is heating up there might be a problem with the wiring. Any carif your car is overheating and the radiator fan is not working in this video we will explain how to test your radiator fan a. If there s an issue with the relay the fan will be affected. The temperature sensor determines when the radiator fan comes on by reading the cooling system temperature.

If the problem of the radiator fan not working still persists you can check the fan by connecting a different power source to it that is direct battery power. How to test radiator fan. First unplug the wiring connector. Ensure that the wires are firmly attached and are not damaged.

How to repair a cooling fan in your car diy with scotty kilmer. It is possible that a wire has worn out due to heat and needs replacement. How to inspect and repair a cooling fan that s not working. Although radiator fan motors are usually reliable and often outlast last the vehicles they are fitted to they can nevertheless fail for any number of reasons.

If the fan motor now works the switch is faulty. Faulty wiring could be to blame. Check for any damage and clean the connector. If the sensor isn t working your fan won t come on because it won t know that the temperature is hot enough to require activation which can frequently lead to overheating.

If it does not check to see that there is current flowing to the switch by using a circuit tester on the feed wire to the thermoswitch. Voltage spikes high resistances in control circuits defective vehicle batteries bad wiring short circuits moisture corrosion and even excessive vibration due to damage to the fan itself can all cause a fan motor to fail. The fan relay controls the power to the cooling fan. If it s not working the fan won t turn on when it needs to which means the engine might overheat.

The sensor is usually located in the car thermostat cover.