What does it mean when the fuse blows on an electric fan?
If the fuse does blow, then it’s a sure indication that you have too much draw on the system and a second relay should be added. For a second relay, both gray wires can be connected to the temperature sender, and both orange wires can be connected to your 12 volt ignition source.
Can a car fan still run after the engine is turned off?
Then you notice the engine cooling fan is still running even though the car is turned off. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Your car fan will run for a few minutes after you turn off the car then turn off. This is normal in many vehicles, such as BMW or Mercedes-Benz.
What should the ground signal be on an electric fan?
The temperature sender, if used, is designed to provide a ground signal at about 185 degrees, and will shut back off when the temperature drops below 165 degrees. This wire (gray in our kit) supplies the ground signal to trigger the relay. The orange wire on the relay should see a 12 volt signal when the ignition switch is turned on.
Can a fan be connected to more than one relay?
For smaller fans, both fans can be connected to a single relay as shown above, and the proper fuse should be installed to protect the circuit while at the same time providing enough current to flow without exceeding the fuse rating.
If the fuse does blow, then it’s a sure indication that you have too much draw on the system and a second relay should be added. For a second relay, both gray wires can be connected to the temperature sender, and both orange wires can be connected to your 12 volt ignition source.
The temperature sender, if used, is designed to provide a ground signal at about 185 degrees, and will shut back off when the temperature drops below 165 degrees. This wire (gray in our kit) supplies the ground signal to trigger the relay. The orange wire on the relay should see a 12 volt signal when the ignition switch is turned on.
What should I do if my Audi A4 fan randomly turns on?
Replace the ECU cover if it is compromised in any way. On some models, like mine, there is a metal clip which bridges across the ECU itself. Push down on either end of it to release the clip. You can then lift the ECU out of the way which will reveal the 219 fan control relay.
For smaller fans, both fans can be connected to a single relay as shown above, and the proper fuse should be installed to protect the circuit while at the same time providing enough current to flow without exceeding the fuse rating.