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1988 Oldsmobile 88 Royale 3.8L Excessive Emissions, Poor Idle Quality, Misfire
Very rough idle which seems to be worse the warmer the engine gets. Initially we had very high HC at idle with a smelly exhaust yet the O2 sensor is switching. We checked and replaced the pcv valve and inspected the pcv valve grommets as per a tsb. We replaced...
FIX posted 4/25/1999
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Message Closed w/FIX
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| VIN | 1G3HY51C7K |
| Engine | 3.8 L / 6 cyl |
| Emissions | Federal emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Always, Idle |
Message Closed w/FIX
Vehicle Data
1988 Oldsmobile 88 Royale
| VIN | 1G3HY51C7K |
| Engine | 3.8 L / 6 cyl |
| Emissions | Federal emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Misfire |
| Occurs | Always, Idle |
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