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Cooling fan not working

Tiny
PCOLA79
  • MEMBER
  • 1994 CHEVROLET CORSICA
Engine Cooling problem
1994 Chevy Corsica 3.1 6 cyl Front Wheel Drive Automatic

Hello my engine cooling fan is not working, will not work even with a/c on, the fan motor is good, I tested it. Bought a new relay, my relay has 4 prongs, the 2 on the right have power, tested with test light, also have a new cooling temperature sensor. When I unplug cooling temperature sensor fan kicks on and plug back in with car running fan stays on, shut car off and restart, fan will not come on. It seems the computer is not grounding the relay to kick the fan on. Do not really know any help would be appreciated, maybe another thing to test. THANKS
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Wednesday, April 14th, 2010 AT 3:55 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
You have an engine coolant temperature sensor that sounds like is not working right. Here is a guide to show you what you are in for when doing the job.

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Here is the location for your car both 4 and 6 cylinder engine.

Check out the diagrams (Below)

Let us know what happens and please upload pictures or videos of the problem.

Cheers
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Wednesday, April 14th, 2010 AT 11:21 PM
Tiny
PCOLA79
  • MEMBER
  • 4 POSTS
Yep that was it, once I replaced the sensor everything started working good. Thanks for your help I love this site ;)
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Thursday, April 15th, 2010 AT 12:32 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Cheers, Ken
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Thursday, April 15th, 2010 AT 1:40 PM

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