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1988 Pontiac Bonneville SE 3.8L Excessive Emissions
The next problem was a failed asm25 emission test.....high co levels at cruise....We replace the 02 sensor and cat....the puzzling part is the processor readings are always good...( switching from 200-800....) even when the tailpipe emissions are off the scale...
FIX posted 3/17/2001
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| VIN | 1G2H254C4J |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Emissions | US FED |
| Symptoms | Excessive Emissions |
| Occurs | Always, Under Load, Cruise |
| Misc. | 4Dr Sdn |
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Vehicle Data
1988 Pontiac Bonneville SE
| VIN | 1G2H254C4J |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Emissions | US FED |
| Symptoms | Excessive Emissions |
| Occurs | Always, Under Load, Cruise |
| Misc. | 4Dr Sdn |
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