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1991 Ford Explorer 4.0L Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy, MIL Lamp on
Hello group. Customer came in complaining about an erratic idle, intermittent stalling and excessive fuel consumption. A short test drive confirmed the hunting idle. It almost stalled when put in gear. When it was brought into the shop, the rotten egg smel...
FIX posted 3/6/2000
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Message Closed w/FIX
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| VIN | 1FMDU24X2M |
| Engine | 4.0 L / 6 cyl |
| Emissions | Canadian |
| Symptoms | Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, Idle |
| Misc. | 0-58A-R00 |
Trouble Codes
| 41 | KOEO - keep alive - No EGO switch |
| 42 | KOER - System rich |
Message Closed w/FIX
Vehicle Data
1991 Ford Explorer
| VIN | 1FMDU24X2M |
| Engine | 4.0 L / 6 cyl |
| Emissions | Canadian |
| Symptoms | Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, Idle |
| Misc. | 0-58A-R00 |
Trouble Codes
| 41 | KOEO - keep alive - No EGO switch |
| 42 | KOER - System rich |
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