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1990 Pontiac grand prix 3.1L Poor Idle Quality, Hesitation
Posted to GM Driveability on 7/27/2000

Hi GM techs and others,I has this one customer complain engine run very rough when cold,it will run better when warm up,I found the wire no 6 was burnt and warn plugs so we did a complete tune up and flush injector,it still run rough at idle,check fuel pressur...

 
Message Closed w/FIX

car Vehicle Data

1990 Pontiac grand prix

VIN 1G2WP11T4L
Engine3.1 L / 6 cyl
SymptomsPoor Idle Quality, Hesitation
OccursCold
Message Closed w/FIX

car Vehicle Data

1990 Pontiac grand prix

VIN 1G2WP11T4L
Engine3.1 L / 6 cyl
SymptomsPoor Idle Quality, Hesitation
OccursCold