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1991 Buick Park Avenue Ultra 3.8L Excessive Emissions, No "Closed Loop"
Hello all, I have a Buick here that I'm stuck on. The vehicle came in for a state inspection and failed the emissions test, specifically NOx. HC and CO were very low (.22 gpm; .33 gpm respectively) while NOx reached 9.82 gpm. I inspected the coolant level and ...
FIX posted 7/7/2001
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Related Documents & Media | VIN | 1G4CU53L1M |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD1, US FED EMISSIONS |
| Symptoms | Excessive Emissions, No "Closed Loop" |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
1991 Buick Park Avenue Ultra
| VIN | 1G4CU53L1M |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD1, US FED EMISSIONS |
| Symptoms | Excessive Emissions, No "Closed Loop" |
| Occurs | Always |
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