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Engine overheating?

Tiny
KIMNAN NOISY HAWK
  • MEMBER
  • 1997 PONTIAC GRAND PRIX
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 2,350,458 MILES
I changed the engine coolant temperature sensor, and it still tries to heat up. And when the car is idling it revs up on its own. What could be wrong?
Saturday, September 10th, 2016 AT 11:40 AM

10 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Have you checked the computer for codes yet?
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Saturday, September 10th, 2016 AT 9:09 PM
Tiny
KIMNAN NOISY HAWK
  • MEMBER
  • 5 POSTS
No. What are computer codes?
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Sunday, September 11th, 2016 AT 9:59 AM
Tiny
TY ANDERSON
  • MECHANIC
  • 684 POSTS
Does the check engine light come on and stay on when you start the engine? If so, most automotive parts stores will scan the vehicle's computer for codes. These codes will start with a pxxxx format (like P0128). If your vehicle has a failure detected by your vehicle's computer this will narrow down what is causing the issue your experiencing.

If I am understanding your question right is your vehicle overheating and at idle the engine is revving on its own?
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Sunday, September 11th, 2016 AT 12:34 PM
Tiny
KIMNAN NOISY HAWK
  • MEMBER
  • 5 POSTS
Yes, you are correct and I thought changing the engine temperature sensor would help, but it has not.
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Tuesday, September 13th, 2016 AT 6:51 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Can you have it scanned for codes and if there ar codes can write down the exact code numbers not code descriptions?
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Tuesday, September 13th, 2016 AT 7:57 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Also is the radiator fan working correctly?
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Tuesday, September 13th, 2016 AT 7:58 AM
Tiny
KIMNAN NOISY HAWK
  • MEMBER
  • 5 POSTS
Yes, radiator fans both working. Where would I take to it to get scanned for codes?
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Tuesday, September 13th, 2016 AT 9:51 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
A auto parts store as long as you do not live in California.
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Tuesday, September 13th, 2016 AT 12:08 PM
Tiny
KIMNAN NOISY HAWK
  • MEMBER
  • 5 POSTS
Okay. Then once I get the numbers what do I do next?
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Tuesday, September 13th, 2016 AT 12:46 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Let me know the exact code numbers not code descriptions? Then we will go from there.
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Tuesday, September 13th, 2016 AT 4:27 PM

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