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1991 Pontiac Grand Prix LE 2.3L Poor Idle Quality
Posted to GM Driveability on 1/18/2001

car has rolling idle, and #1 low [...] readings are as follows exhaust oxygen reads opposit of what realy is. checked o2 with lab scope good oscillation and reads same as o2 reading on scanner. intergrator reads in 20's at 2500 r's and 72 at idle block learn r...

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car Vehicle Data

1991 Pontiac Grand Prix LE

VIN 1G2WH54D5M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic
DeliveryFI
Emissionsca emissions
SymptomsPoor Idle Quality
OccursIdle, Idle Only
Message Closed

car Vehicle Data

1991 Pontiac Grand Prix LE

VIN 1G2WH54D5M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic
DeliveryFI
Emissionsca emissions
SymptomsPoor Idle Quality
OccursIdle, Idle Only