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RPM surging and temperature gauge that is dropping?

Tiny
CARRISLU
  • MEMBER
  • 1997 SATURN SC1
  • 165,000 MILES
What could it be if a 1997 saturn sc1 has running temperature to cold and back up again?
Friday, March 16th, 2012 AT 12:02 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go here for the surging

Refer to this link:https://www.2carpros.com/articles/engine-surges
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Friday, March 16th, 2012 AT 12:07 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Just to add to this one you need a new coolant temp sensor also inspect the inside of the coolant temp sensor connector if the terminals are green or blue instead of silver you will have to replace the connector as well.I have replaced a ton of those sensors for that issue and a lot of other issues. Its a really common issue on those cars.
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Friday, March 16th, 2012 AT 3:50 AM

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