Question about 2004 Ford Focus

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After about 2 minutes the engine fan comes on , it only reaches half way on the temperature gauge and keeps going on and off throughout the journey . Why does it come on so quickly ???

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Just for peace of mind, I would check the relay for the cooling fan and the coolant temperature sensor with a multimeter. The temp sensor is supposed to trip the relay and cause the fan to run and cool the engine when the coolant temp reaches a certain point. If you register your vehicle at autozone.com, you will have access to a free online repair manual for your particular vehicle and will help you in finding components. It is free. Hope this helped.

Posted on Jul 16, 2009

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http://wiki.answers.com/Q/Should_the_radiator_fan_run_after_the_engine_is_turned_off

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You probably need to bleed the cooling system properly.

Open the cooling system bleeder screws.

Slowly fill the cooling system with a 50/50 coolant mixture until coolant runs freely out of bleeder screws.
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