What causes the radiator fan to stop working?
Six things may prevent an electric cooling fan from coming on: Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay.
What would likely be the result if the radiator fan quit working?
A radiator fan is imperative in keeping the temperature of the coolant low enough. If the radiator fan is not working correctly, your car can get damaged, and if you let it go too long without a repair, the fix can be thousands of dollars out of your pocket.
What happens if radiator fan stops?
What happens if the cooling fan stops working? If your cooling fan stops working, your engine could overheat. This could cause damage to your engine parts. It’s a serious issue and needs to be looked at by a garage.
Should both radiator fans turn on?
Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
Why does the radiator fan turn on when the AC is on?
The A/C runs on a separate circuit and is triggered by A/C system. The engine cooling system is normally triggered by the temp control sensor/sending unit or ECM/PCM depending on system, but virtually works under the same premise. Once it reaches a 200 plus or minus depending on vehicle the fan will kick on.
Why is my radiator fan not working in my garage?
You also no longer hear the reassuring sound of the radiator fan kicking in when you pull into your garage. If this is the case, it might be time to check if the fan is working properly, and is cooling things down under the hood.
Why is the fan not working on my range hood?
Some range hoods use an electro-mechanical switch to control the exhaust fan. The fan switch activates the fan and controls the fan speed. If the fan switch doesn’t work properly, replace it. If your range hood fan won’t turn on, the fan switch might be broken.
What to do if your radiator fan starts?
To check it, disconnect the wires from the sensor and touch them together. If this starts the fan, the sensor is faulty and will need to be replaced. Check your service manual to make sure exactly where the temperature sensor is on your car. 4. Coolant Level Check the coolant level in your engine.
Why is my radiator fan not working on my Honda Civic?
Figure 1. 1999 Civic under-hood fuse box with location of fan relay (circled in red). Another easy way you can check if the radiator fan switch relay is bad is to swap the radiator fan relay with the condenser fan relay. If the radiator fan begins working, this is an indication that the fan relay is bad.