1991 Pontiac Firebird 3.1l,after it warms up ,stumbles &amp

1991 PONTIAC FIREBIRD
138,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TEPE
  • MEMBER
  • 1 POST
3.1L,runs great cold, warms up then it stumbles or misses.Get ready to stop or slow down it stalls then starts right back up. Put plugs ,wires, cap, rotor, coil modual,fuel pump,fuel filter on it.
Sep 17, 2009 at 2:37 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Has the check engine light come on? Have you checked the crank sensor? Fuel pump pressure?
Sep 24, 2009 at 3:55 AM
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