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92 Pontiac Bonneville

Tiny
ZMARTINSON
  • MEMBER
  • 1992 ALL OTHER MAKES ALL OTHER MODELS
My car is a SE with the 3800 motor it has about 180,000 miles. The problem is it'll start fine and drive or idle for about 15-20 minutes. After that it just starts and dies, always starts fine and will stay running if you keep the RPM's above 2000 or so. If you let it sit for 4-5 hours, back to the same it'll start and run for awhile then die. This problem sounds kind of similar to the other 92 Bonneville problem. I have replaced the fuel filter and pump. Any help would be appriciated! This car is pretty old and I am hoping it is something easy.

Thanks!
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Monday, July 2nd, 2007 AT 5:49 PM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
You could possibly have an Idle AIr Control motor that is shorting out when it gets hot. Have the PCM scanned to see if it stored any trouble codes
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Tuesday, July 3rd, 2007 AT 8:00 AM
Tiny
REBELRENEGADE1
  • MEMBER
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Does your Bonny have a digital EGR valve? I know my bonneville has a Digital EGR valve and since the solenoid on it was superheated up and melted the EGR went bad in it. It was caused by a plugged Cat. That is just something else to check on top of the I.A.C control module.
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Thursday, July 5th, 2007 AT 7:38 AM

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