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Can u tell me where the fan sensor is i changed the sensor behind the ac compressor on the tube. But still runs hot fan sensor is only thing left.

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actually, there are a lot of other things that could be the problem.

how high does your gauge go to let you know it's getting too hot?

you should use a scanner and look at the temp sensor when the engine is running warm. See if the digital temp matches the gauge. Watch the temp as it gets around 210 to 220 degrees F. The scanner should also have a pid for fan request. There should be a pid for low speed fan and another for high speed fan. If you ten\mp gets up to 235F and there is still no fan (the low and high should have come on by then) see if the computer is trying to turn them on. If it does say fan request on and the fans aren't on check the fan relays and check the fan fuses. if all those things check out good then the fan motor may be the problem

oh, sorry, btw the coolant temp. sensor... what year, model and engine do you need the information for?

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1991 Buick Regal Custom orders 3800 6cyl 3.8l. Must specify it is a phase 1 GM 3800 engine

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