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Originally Posted by dave40614
99 grand am 2.4L, just finished head gasket job. All looks fine, except coolant fans won't come on ( I ran it three clicks past 200 F still nothing). When I turn the AC on the fans come on, and stay on after the AC is turned off.
Anyone know how to test this system ( relays, sending units, etc...)
Thank you,
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On the drivers side of the block, next to the power sterring pump the is a plastic outlet which looks like a thermostat housing. Coming out of that outlet at the southeast direction is a brass fitting with a cannon connection. This is the temp sensor for the fans. I'm not sure of a way to test it but it is aa cheap part and easy to replace.