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1996 Chevrolet Cavalier 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp on
Posted to GM Driveability on 8/1/2014 12 Replies

Car runs fine in open-loop, it has great vacuum idles fine. Once in closed-loop the vacuum slowly drops from 18in/hg - 8in/hg and eventually stalls out. I see this happening on the scan tool and actual vacuum gauge. If I unplug the O2 sensor or tsp to force it...

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  Related Documents & Media  1996 Chevrolet Cavalier

 
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet Cavalier

VIN 3G1JC1247T
Engine2.2 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / SEFI
EmissionsNot OBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet Cavalier

VIN 3G1JC1247T
Engine2.2 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / SEFI
EmissionsNot OBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)