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1987 Chevrolet El Camino 5.0L Poor Idle Quality, Misfire, Backfire
This vehicle runs poorly with the EST connected, timing goes to 30 degrees at idle and will advance to appx. 38 degrees at higher RPM. The KV firing line increases from 8k to 16-24k with EST connected. Also multiple firing spark lines (10-15) With EST disc...
FIX posted 7/16/1998
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Message Closed w/FIX
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| VIN | 3GCCW80H3H |
| Engine | 5.0 L / 8 cyl |
| Emissions | OBDI, Ca Emissions |
| Symptoms | Poor Idle Quality, Misfire, Backfire |
| Occurs | Always, Est Connected |
Message Closed w/FIX
Vehicle Data
1987 Chevrolet El Camino
| VIN | 3GCCW80H3H |
| Engine | 5.0 L / 8 cyl |
| Emissions | OBDI, Ca Emissions |
| Symptoms | Poor Idle Quality, Misfire, Backfire |
| Occurs | Always, Est Connected |
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