1991 Chevrolet G20 Sportvan 5.7L Excessive Emissions
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,...
FIX posted 11/18/2010
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Vehicle Data1991 Chevrolet G20 Sportvan
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Message Closed w/FIX
Vehicle Data
1991 Chevrolet G20 Sportvan
VIN | 1GAGG35K3M |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection / tbi |
Emissions | ca emissions |
Symptoms | Excessive Emissions |
Occurs | Always |