Join Date: Jun 1999
Location: ST.LOUIS MO. USA
Your fan is controlled by the ECM. It works off a coolant sensor . It should turn on around 228 degrees and back off at around 214 degrees. It also comes on when the A/C is turned on from a high pressure switch. These both go through a relay mounted either on the front passenger side of the core support or on the right side fender, towards the front.The fan does not run all the time.I beleive it stays off above 30mph unless you have an overheat condition.What exactly is the system doing? Also check to make sure the undercar airdam is in place. If it is missing it will cause your car to over heat. It is not controlled by the same sender for the gauge.This senor is in the intake [front]Should be a yellow wire and black wire.
[This message has been edited by DAV43 (edited 06-17-99).]