Car Radiator Fan Not Working Properly

If the clutch is not engaging use a voltmeter to check for voltage getting to the compressor.

Car radiator fan not working properly. Although new cars are not immune to wiring problems radiator fan failures due to issues with wiring are more likely to occur on older vehicles. With no airflow through the radiator it will soon warm up to the temperature at which the fan should cut in. There are springs within the fan clutch that can wear out or corrode over the years. If the fan is not working these units or the wiring to them may be at fault.

Long term exposure to heat vibration moisture and corrosion can cause connections to go bad or wiring insulation to become brittle and flake off leaving wires exposed. If there s an issue with the relay the fan will be affected. The ecu is. The fan relay controls the power to the cooling fan.

It may cause the fan to cut in and out or not come on at all. If you have had problems with your engine overheating check your radiator fan and water pump. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. Checking the circuit and motor for faults.

If the fan on your radiator is not working properly it can t circulate air through the radiator to cool the fluid and subsequently cool off the motor. With the engine running turn the a c on max cool set fans high and make sure that the clutch is engaging on the. When diagnosing an air conditioning issue it s easiest to begin at the compressor. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn.

The assembly usually has only three components fan motor thermostatic or thermo switch and relay. Vehicle overheating another symptom of a possible problem with the cooling or radiator fan motors is the vehicle. Your car s radiator holds coolant fluid for the motor to ensure that the motor doesn t overheat. If it s not working the fan won t turn on when it needs to which means the engine might overheat.

If everything else seems to be fine the fan clutch is the most likely cause of radiator fan failure. Cooling fans do not come on the most common symptom of a faulty cooling fan motor are cooling fans that do not come. If you notice that your engine is running at higher temperatures than normal that may be a sign that the relay is not functioning properly. If the fan is not working even when the car is heating up there might be a problem with the wiring.

Everything electrical is supported by a fuse so that if there is an electrical surge going towards a. If this burns out or fails you ll need to replace it.