Question about 2001 Chevrolet Cavalier

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My a/c comp and engine cooling fan are not working it seems like they both quit at the same time is there a sensor that opperates both on a 2001 chevy cavalier

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There is a fan relay, and an AC relay that both turn the fan on at certain times, including when the AC is on. a coolant temp sensor tells the computer (ECM) to turn on the fan but only when the engine reaches a certain temp. an electronic component locator can show you where these sensors and relays are located. they are not very expensive. your local auto parts store can look that up for you.

Posted on Sep 03, 2010

Testimonial: "thanks i have replaced the temp sender and relays i will check with my local parts store on the rest of the sensors"

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If the fan doesnt come on when ac is turned on, it is most likely a fan motor. take fan and housing off and run 2 jumper wires from battery to fan terminal. if it doesnt run then it is the motor. i have replaced 2 of these over the years. never a sensor.

Posted on Sep 21, 2010

  • Will Whetstone Sep 04, 2012

    Thanks for the feed back. I should have identified the blower fan in the interior AC/Heat is my problem. Since the blower and AC compressor are not turning on even though the temp control shows digital indicator changes, blower/fan indicator works however the car does not get cold or hot air blowing out and the compressor does not turn on. I am hoping it is all related to a ground.

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