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1998 Ford F-150 Lariat 5.4L Poor Idle Quality
After replacing the ECM for the internal failure code of 605 the vehicle now runs well but after sitting the idle surges. The O2 sensors are showing real lean after idling for a few minutes. The MAF has been cleaned and all voltages show as designed. The sweep...
FIX posted 10/23/2006
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Message Closed w/FIX
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Related Documents & Media | VIN | 1FTRX18L4W |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / multi point |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality |
| Occurs | Idle |
Trouble Codes
| 171 | lean condition R/bank 1 adaptive at limit |
| 174 | lean condition L/bank 2 adaptive at limit |
| 605 | original code calling for ecm replacement which we have done |
Message Closed w/FIX
Vehicle Data
1998 Ford F-150 Lariat
| VIN | 1FTRX18L4W |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / multi point |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality |
| Occurs | Idle |
Trouble Codes
| 171 | lean condition R/bank 1 adaptive at limit |
| 174 | lean condition L/bank 2 adaptive at limit |
| 605 | original code calling for ecm replacement which we have done |
Video