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2005 Volkswagen Jetta Question: Cooling fans run at to low a temp.

 

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soxfan04, 2.5L 5 Cylinder, Haverhill, MA, September 02, 2011, 07:28
 Rookie

When I start the car the fans come on within a almost right away and they don't turn off till the engine cools off.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, September 02, 2011, 07:53
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     Master

    The way the cooling fan/s work on that car is there is a temperature switch on the radiator it reaches a certain temperature it thinks the fan should be switched on, it sends a signal to the fuel/ignition control computer it then sens a signal out to the electric fan/s to then turn on. My guess would be a bad fan switch. I just looked to see if there was any technical service bulletin but I don't see any in my information.

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