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The reason why the fan runs on after the engine gets hot is that the engine needs to be cooled in order to prevent damage. It may be running for a long time on your vehicle because it is fairly old now. It may be that the entire cooling system needs an inspection and some maintenance, in order that the engine might be enabled
to run cooler.If this is done the fan should not need to cool the engine for a long period after it is switched off.
well the electric fan will turn on and off at any time. when you stop your vehicle and the fan continues to run what is happening is the temp sensor says the motor is still too hot and it needs more cooling. now as it reaches the cooling temp it is also suppose to shut it down. have the sensors checked.
Most cars with electric cooling fans incorporate a feature that will turn on the fan after the engine has been turned off until the radiator has cooled down. If it keeps coming on after cool down and is draining your battery, then you need to replace the switch that controls the fan.
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