Why does my cooling fan run after shutting the engine 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 it off. When the engine is turned off, the coolant doesn’t circulate, and the heat stays trapped, therefore prolonging the engine from cooling.
Why does my engine fan stay on?
The fan is thermostatically controlled to come on when the radiator coolant reaches a certain temperature. You car’s cooling system is probably compromised – either low coolant (due to leaks) or a thermostat problem or radiator issue.
Why does my car AC fan keep running?
The thermostat is faulty. If the fan and the cooling system are running when they shouldn’t, there’s a chance the thermostat may require a replacement. If only the fan is running when the AC isn’t, there may be a faulty relay switch stopping the settings you enter on the thermostat from being communicated to the fan.
What happens when the radiator fan does not work?
When the radiator fan does not work, this is a serious problem. The fan helps cool off the radiator, which acts as a heat sink drawing heat away from the engine. If the fan is not working properly, the radiator will not properly cool the engine. This, in turn, could cause critical engine components to fail.
Can a bad coolant sensor cause a car to not start?
Some cars use the engine coolant temperature sensor to control the electric cooling fans. You have two separate temperature sensors for the fans, dashboard gauge, and engine management in most cars. However, if your car has a single sensor, a bad engine coolant temperature sensor may result in your fans won’t start at all. 4.
Why does my car fan not turn on?
This fan is electrically controlled and relies on the signal from the onboard computer. If the fan receives a false signal, the fan might not turn on, causing the engine to overheat. Some vehicles have a separate coolant temperature sensor for the fan, but many cars use the same sensor. 7. Poor Idling