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2000 Pontiac Grand Prix Normal Operating Temperature

Tiny
DFCRAM98
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 70,000 MILES
Since having my care repaired due to a "Service Engine Soon" light warning, my temp guage reads much higher than it did before(no matter what the driving conditions. It consistently registered around the large mark between the 160 & 210 mark(for about 9 years)Now it registers at or above 210 after only a few minutes on the road(not at high speeds). I am being told that my engine was actually running way too cool all these years and is now running at a normal temperature. They replaced a temp sensor & a thermostat which actually stuck & overheated so I had to take it back today. So what is the normal temp guage reading for a 2000 Pontiac Grand Prix GT?

Dfcram98
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Thursday, February 4th, 2010 AT 9:24 PM

4 Replies

Tiny
TOOOMANYTOYS
  • MECHANIC
  • 513 POSTS
It should be around 210 to 220. Are the fans coming on when the vehicle is at operating temperature.
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Thursday, February 4th, 2010 AT 9:29 PM
Tiny
DFCRAM98
  • MEMBER
  • 3 POSTS
The fans are coming on. But why is it now running
hotter than before after the thermostat & it's sensor
was replaced?

Dfcram98
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Thursday, February 4th, 2010 AT 9:49 PM
Tiny
TOOOMANYTOYS
  • MECHANIC
  • 513 POSTS
If the thermostat was worn, it allows coolant to flow through at lower temperatures. Which would cause an overcooling concern. The thermostat acts as a temperature regulator when working correctly
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Friday, February 5th, 2010 AT 7:38 AM
Tiny
DFCRAM98
  • MEMBER
  • 3 POSTS
Thanks for all your help! I now have to tell myself that
everything is okay when I see a higher reading on my
temp guage. Again, thanks!
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Friday, February 5th, 2010 AT 12:15 PM

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