Engine is overheating?

Tiny
WHITEMIKENSD
  • MEMBER
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,800 MILES
My car's message center is telling me that the coolant is low, then I check it and its not. Then the temperature gauge keeps moving up to almost overheating. What could the problem be?
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Friday, August 29th, 2008 AT 1:03 PM

1 Reply

Tiny
KASEKENNY
  • EXPERT
More than likely the temperature sensor is the issue but we need to verify this by checking its operation.

Here are a few guides that will help with this:

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

https://youtu.be/071_-NGrk5s

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

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

Below is the wiring diagram and we need to start with checking the resistance across the sensor. Then start the engine and make sure as the engine gets hotter the resistance should be changing smoothly and not jumping.

If it doesn't then we need to replace the sensor. Please run through this material and let us know what you find.

Thanks
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Monday, August 2nd, 2021 AT 5:16 PM

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