Hi billymac here.A temp switch and a fan relay turns this fan on. The temp switch is on the thermostat houseing follow the upper radiator hose down to the engine. With the engine running unplug this sensor does the fan come on. If yes sensor is bad or connector. If no relay or fan motor is bad usually it is the sensor. Billymac
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Sunday, January 11th, 2009 AT 8:48 PM