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1999 Buick Century Custom 3.1L Poor Idle Quality
I need some help with this Buick. Runs good, good power below about 2500 rpm and at part throttle. Above a certain throttle opening, or at about 2500 rpm, under load or in neutral, it starts a rythmic idle fluctuation and loss of power that continues until you...
FIX posted 6/9/2008
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14 Replies Received
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Related Documents & Media | VIN | 2G4WS52M8X |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality |
| Occurs | Always, at About 2500 RPM |
Trouble Codes
| P0449 | PCM Internal Fault |
Message Closed w/FIX
Vehicle Data
1999 Buick Century Custom
| VIN | 2G4WS52M8X |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality |
| Occurs | Always, at About 2500 RPM |
Trouble Codes
| P0449 | PCM Internal Fault |
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