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1988 Buick Regal Limited 2.8L Excessive Emissions, Poor Idle Quality, MIL Lamp on
Did speed density update. Tried new 02 Sensor, EGR Valve, ECM, PCV Valve & Replaced upper Plenum Gaskets. Vehicle runs good at highway speeds, idles fine when first comes to a stop, then starts idling rough. Service engine light goes off at part throttle then...
FIX posted 3/5/1998
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| VIN | 2G4WD14W3J |
| Engine | 2.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / MPFI |
| Emissions | U.S. Fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, MIL Lamp On |
| Occurs | Always |
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Vehicle Data
1988 Buick Regal Limited
| VIN | 2G4WD14W3J |
| Engine | 2.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / MPFI |
| Emissions | U.S. Fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, MIL Lamp On |
| Occurs | Always |
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