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1991 Chevrolet G10 Chevy Van 4.3L Excessive Emissions, SPARK KNOCK
Vehicle is a high nox failure (which is new test in Mass.). the problem i'm having is the [...] going in and out of closed loop on a road test. (verified in a snapshot)Timing is correct,egr operation O.K. Van is at operating temp and under load detonates e...
FIX posted 12/30/1999
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| VIN | 2GCCG15Z1M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / tbi |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Spark Knock |
| Occurs | Always, Under Load, on Accel |
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Vehicle Data
1991 Chevrolet G10 Chevy Van
| VIN | 2GCCG15Z1M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / tbi |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Spark Knock |
| Occurs | Always, Under Load, on Accel |
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