Question about 1994 Buick Century

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Radiator Fan for 94 centry does not come on. Engine overheats. I assume temp sensor is faulty. I have hot wired the fan to ensure the fan does work, but without those wires... no luck. I hate to just replace things without some amount of confirmation that that is the problem, but I also needed to know for sure where it is located. I asume there are 2 sensors because the one sending the temp to the dash gauge seems to work ok, just nothing telling the computer to turn on the fan...

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The ECM turns on the fan when the coolant sensor reaches a set temp. the fan is also turned on when the AC is on. there is also a fan relay in the circuit. none of these are very expensive. if the fan works when you apply direct voltage, the fan is good. replacing it will not solve your problem. an electronic component locator can show you where the temp sensor and fan relay are. your local auto parts store can look that up for you.

Posted on Sep 03, 2010

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when A/C off, radiator fan does not turn on automatically ... to overheating (assumed to be correct as temperature gauge appears working when car is warming up) .... In mycase, the fans run, but the engine still overheats.

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