Car is overheating and fans not working?

Tiny
TODD ANDREWS
  • MEMBER
  • 2009 CHEVROLET IMPALA
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
The car is overheating and the fans are not working. Replaced temp sensor and fan relays. Could it be bad thermostat?
Friday, August 12th, 2022 AT 8:02 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Yes, it could when the engine is overheating do you hear a thumping noise? This is a sure sign the thermostat is stuck closed. Here are two generic guides to help with the thermostat location and how to change it out in the diagrams below:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

and

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Saturday, August 13th, 2022 AT 9:51 AM

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