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1991 Chevrolet G20 Sportvan 5.7L Excessive Emissions
Posted to GM Driveability on 11/18/2010 5 Replies

i have this 91 chev. van that seems to be giving me a little problem. it is a state vehicle with low milage,77,000. co readings are just high enough to fail smog test both at 15mph and 25mph. limits are at 15mph .43 and .56 at 25mph. found o2 sensor bias lean,...

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  Related Documents & Media  1991 Chevrolet G20 Sportvan

 
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet G20 Sportvan

VIN 1GAGG35K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca emissions
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet G20 Sportvan

VIN 1GAGG35K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / tbi
Emissionsca emissions
SymptomsExcessive Emissions
OccursAlways