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1999 Pontiac Grand Am

Tiny
QUIANAR
  • MEMBER
  • 1999 PONTIAC GRAND AM
Engine Cooling problem
1999 Pontiac Grand Am 6 cyl Automatic

what are the symptoms of needing a new thermostat?
Thursday, October 7th, 2010 AT 5:55 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Thermostat stuck closed--engine overheating. Thermostat stuck open-- it may take longer for the engine to reach operating temp. Is your temp gage acting normal? Other issues could cause the same problems. I don't worry about a thermostat, I just change it, if I suspect something.
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Friday, October 8th, 2010 AT 12:49 PM
Tiny
QUIANAR
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No my thermostat acts normal until im at a light or at a stop and it will up to 215 but once I get to driving it will eventually go back down down know it its stuck open or closed could you tell me about those issues just in case I change the thermostat and I still have the same problem?
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Monday, October 11th, 2010 AT 5:43 PM
Tiny
JDL
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Just my opinion, 215 isn't overheating, no where close. The cooling fans my not even kick on till around 220. If your worried about the thermostat, change it.
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Monday, October 11th, 2010 AT 6:06 PM

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