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1992 Buick Park Avenue 3.8L Excessive Emissions, Poor Idle Quality, Misfire
customer said this all started after fill up checked fuel pressure,computer codes, removed plugs, compression check 140 - 150 all cyl. at idle the engine shakes very bad. skipping on cylinders 1,2 ,3 bring up rpm and it seems to run a little smother but still ...
Summary posted 3/28/2001
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Related Documents & Media 
| VIN | 1G4CW53L9N |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Always, Under Load, Idle |
Trouble Codes
| 34 | mass air flow circuit |
Message Closed w/Summary
Vehicle Data
1992 Buick Park Avenue
| VIN | 1G4CW53L9N |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Always, Under Load, Idle |
Trouble Codes
| 34 | mass air flow circuit |
Video