1997 Pontiac Grand Prix Replaced Lower Intake That Leaking Antifreeze Put

158,000 MILES
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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.
Mar 25, 2013 at 11:04 AM
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ASEMASTER6371
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coils had nothing to do with the issue.

re check all vacuum lines.

is the motor noisy from the valves??

Roy
Apr 26, 2013 at 11:08 AM
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