Mechanics

PONTIAC GRAND PRIX COMPRESSION PROBLEM

1997 Pontiac Grand Prix • 174,000 miles

Car misfires when idle, could be the problem
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Guest
February 7, 2013.



Check for applicable trouble codes. To check codes yourself, you need an obd2 code reader. Some of the national brand autostores will check codes for free. The code might tell you which cylinder has a problem? Then you check fuel--spark--compression on that cylinder.

How long since a tune-up?

JDL
Feb 7, 2013.