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1989 Pontiac Grand Prix 2.8L Poor Idle Quality
Posted to GM Driveability on 11/3/1999

Replaced 6 injectors, because 4 was at 8 to 10 ohms. Replaced PCM with no change. Fuel pressure has dead head pressure of 60 psi Cylinder compression 160-175 psi No vacuum leaks found at all Performed cylinder vacuum test to check for intake manifold leak....

  Related Documents & Media  1989 Pontiac Grand Prix

 
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car Vehicle Data

1989 Pontiac Grand Prix

VIN [No VIN Available]
Engine2.8 L / 6 cyl
EmissionsFederal
SymptomsPoor Idle Quality
OccursIdle, Intermittently

Trouble Codes

44Lean Exhaust
Message Closed w/FIX

car Vehicle Data

1989 Pontiac Grand Prix

VIN [No VIN Available]
Engine2.8 L / 6 cyl
EmissionsFederal
SymptomsPoor Idle Quality
OccursIdle, Intermittently

Trouble Codes

44Lean Exhaust