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2001 Ford F-150 King Ranch 5.4L Poor Idle Quality, MIL Lamp on
Guy from parts store owns truck , he has replaced about anything they stock . Truck came in with po171, lean . Rough idle . I motorvaced injectors . Fuel trims were -+3. ran great . Came back 100 mile later, po171 again . Check for vac leaks , smoked it severa...
FIX posted 2/20/2009
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Related Documents & Media | VIN | 1FTRW08L51 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed w/FIX
Vehicle Data
2001 Ford F-150 King Ranch
| VIN | 1FTRW08L51 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
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