Nope, the electric radiator fan. It's suppose to cool down the car. Like the other person said, it is the only part of the engine that wouldl be running, even after you turn the car off. If that fan is broken, it may also explain why your car was smoking.ghostwatcher said:When they looked at it today, well they did it very quickly, couldn't find what was wrong. Got to wait for tomorrow, maybe I should ask them to check if its the radiator?