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1991 Pontiac Sunbird LE 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall
Posted to GM Driveability on 1/14/2005 23 Replies

this car seems to have rough idle once it goes into closed loop. intergrator drops to 85 and block learn stays at 100. with the probe HC reads great at 2000 RPM and CO is great .2 but when relasing the throttle the HC & CO goes up and down. So bad sometimes 8-...

23 Replies Received (View Replies)

  Related Documents & Media  1991 Pontiac Sunbird LE

 
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car Vehicle Data

1991 Pontiac Sunbird LE

VIN 1G2JB11T8M
Engine3.1 L / 6 cyl / GAS
Trans3-speed Automatic
DeliveryFI / mpi
Emissionscanadian
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall
OccursAlways, Idle, Intermittently
Misc.2Dr

Trouble Codes

45rich condition
Message Closed w/FIX

car Vehicle Data

1991 Pontiac Sunbird LE

VIN 1G2JB11T8M
Engine3.1 L / 6 cyl / GAS
Trans3-speed Automatic
DeliveryFI / mpi
Emissionscanadian
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall
OccursAlways, Idle, Intermittently
Misc.2Dr

Trouble Codes

45rich condition