Engine coolant temperature sensor failure?

Tiny
PERRI COYNE
  • MEMBER
  • 2014 CADILLAC ATS
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
Just replaced thermostat on the car listed above on 12/4/2020. Getting no reading on the dash gauge, and the needle remains on cold setting under normal driving conditions. However, getting a dash warning the A/C is turned off due to hot engine. The fan runs for about 5-10 minutes even after a 3-minute drive. Could this be an engine coolant temperature sensor failure?
Saturday, December 5th, 2020 AT 11:50 AM

3 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Yes, that sounds like you could be having an issue with the coolant temperature sensor. Here is a tutorial for you to view on the sensors replacement:

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

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

I've attached 2 pictures below of the location and steps for replacement for your car. Hope this helps and thanks for using 2CarPros.
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Saturday, December 5th, 2020 AT 12:26 PM
Tiny
PERRI COYNE
  • MEMBER
  • 2 POSTS
Thank you very much Danny. I also believe that to be the case.
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Monday, December 7th, 2020 AT 6:54 AM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
You're welcome!
Keep us updated when the repair is completed. Thanks again for using 2CarPros and we hope you will use our site again in the future.

Danny-
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Monday, December 7th, 2020 AT 3:01 PM

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