Engine shuts off after it has warmed up and will not restart

Tiny
JENNY JERRY
  • MEMBER
  • 2001 CHEVROLET MONTE CARLO
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
My car starts and runs great, but after it gets warmed up it shuts off and will not start back up until it cools down.
Sunday, April 10th, 2022 AT 1:36 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,457 POSTS
I have seen this happen when the engine coolant temperature sensor shorts out when hot, is the check engine light on? If so, this guide will help us get the codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a guide to help walk you through the coolant sensor replacement with specific instructions to help you do the job on your car in the diagrams below:

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

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Monday, April 11th, 2022 AT 9:38 AM

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