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Engine hot- A/C off, message appeared

Tiny
DAVID THORNE
  • MEMBER
  • 2009 SATURN VUE
  • 1.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 102,000 MILES
It say engine hot- a/c off. Replaced coolant temperature sensor and it went away for a few days. Doesn't show up until car has been on for a period of time. Also RPM's bounce up and down now.
Saturday, October 24th, 2020 AT 12:06 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
We need to suspect that the engine is actually overheating so here are some guides on where we need to start:

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

https://www.2carpros.com/articles/head-gasket-blown-test

I would suggest letting the engine get warm and then do the head gasket test due to the bouncing RPM. We need to make sure the head is not warped before we go any further because if we do then nothing else matters until that is fixed.

Let me know what you find with this and we can go form there. Thanks
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Saturday, October 24th, 2020 AT 6:28 PM

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