1991 Pontiac Grand Prix car dies going down the road

Tiny
MINIMATT
  • MEMBER
  • 1991 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 175,000 MILES
Hello, just got a 91 pontiac grand prix and it dies at stops and once down the road. No warning signs really just dies. I have checked for vaccuum leaks and found none. I wiggled all the wires around trying to find a bad connection and nothing. It has a new fuel pump in it. What would you do next? Would it be the mass air sensor? O2 sensor? Please help. Thanks alot
Wednesday, February 4th, 2009 AT 10:03 AM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
If it dies at stops try cleaning the Idle Air Control Motor. Also clean out around the butterfly in the throttle bore with carb cleaner and a rag. This will help th estalling at idle issue. Be sure the tune up is in good shape as well. When it dies, does it start right back up?If so the injection service should help.
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Thursday, February 5th, 2009 AT 7:27 AM

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