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1991 Ford Bronco 5.8L Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp on
Idle surges in gear only at idle. Bucks when cruising at a steady speed. Check engine light comes on after 8 miles of continuous driving. Sets code 42.
FIX posted 5/4/2000
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Message Closed w/FIX
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| VIN | 1FMEV15H9M |
| Engine | 5.8 L / 8 cyl |
| Symptoms | Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp On |
| Occurs | Cruise, Idle |
Trouble Codes
| 42 | EGO indicates System Always Rich |
Message Closed w/FIX
Vehicle Data
1991 Ford Bronco
| VIN | 1FMEV15H9M |
| Engine | 5.8 L / 8 cyl |
| Symptoms | Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp On |
| Occurs | Cruise, Idle |
Trouble Codes
| 42 | EGO indicates System Always Rich |
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