Mechanics

PONTIAC GRAND PRIX COIL PACK PROBLEM

1997 Pontiac Grand Prix • 158,000 miles

I replaced the lower intake that was leaking antifreeze and put everything back just as it came came off and I replaced the plugs when I i fired it back up it sounded good but when drove it I kept dieing but ran good when it ran so I cleanded the coil pack up good it stoped dieing but fell on its face when I dove it I changed out the coil pack stiil ran the same. Ran fuel pressure check it was good. It set a code of multiple miss fires I checked every looked good but still fell on its face. Then it also ran a map sensor code so I am extremely lost! Any help would be great.
Avatar
Guest
March 25, 2013.



Coils had nothing to do with the issue.

Re check all vacuum lines.

Is the motor noisy from the valves?

Roy

ASEMaster6371
Apr 26, 2013.