1992 Pontiac Firebird engine wont run at operating temp

Tiny
DONNYSTYLE
  • MEMBER
  • 1992 PONTIAC FIREBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
I have a 1992 pontiac firebird that has a new motor with 10 thousand miles on it, My question is the engine sputters out and stalls when it gets to about 210 - 215 degrees. I have changed the fuel pump, fuel filter, blew out the fuel lines, changed the dist. Ca, ign. Rotor, wires, and plugs. When I first start it, it runs mint but as soon as it warms up it stalls under load, it idels fine. Any help would so helpful,

thank you
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Tuesday, September 22nd, 2009 AT 9:19 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on? Have you checked to make sure the EGR is functioning correctly?

Let me know.
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Thursday, September 24th, 2009 AT 10:46 AM
Tiny
DONNYSTYLE
  • MEMBER
Thank you for your quick response. I haven't checked the e.G.R. Yet, the check engine light has not come on yet. This car has got me totally stumped.

Thank you very much again for any suggestions
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Thursday, September 24th, 2009 AT 11:16 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Let me know what you find. Also, the temp is getting higher than I like. You may want to replace the t-stat.
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Thursday, September 24th, 2009 AT 1:51 PM
Tiny
DONNYSTYLE
  • MEMBER
Thanks again for your help with my 92 pontiac firebird, it ended up being the foolish e.G.R. Valve I removed the hose plugged the hole and now it runs great. I guess the valve was sticking open.
Thank you again,
D.J.
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Monday, September 28th, 2009 AT 11:37 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
I'm glad you found the problem. Let us know if you have questions in the future.
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Monday, September 28th, 2009 AT 12:11 PM
Tiny
CONSTRUCT
  • MEMBER
While I'm no "pro" car mechanic I also own a 92 v8 pontiac firebird original engine (few parts replaced) and after a full tuneup timed and completely maintenanced I get a operating temp of about 120 average in the hot sun of florida. Again I'm no pro mechanic but shouldn't a v6 version of the 92 run operating temp of about the same? Before the tuneup and maintenance mine also ran above temp at around 240-260.
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Thursday, October 15th, 2009 AT 6:54 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Actually the factory thermostat is set to open fully at 195 degrees. If you are running at 120, it isn't running warm enough which will eventually cause other problems.
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Thursday, October 15th, 2009 AT 1:41 PM

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