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1996 Ford F-150 Special 4.9L MIL Lamp on
96 F-150 4.9 2WD. PO 171 and 174 keep setting. Searched high and low twice for vacuum leaks and can find none. Isolated all vacuum operated components and no help. Replaced MAF with new Ford unit. Still has LTFT readings in the +20% range which is way too much...
FIX posted 1/18/2004
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Message Closed w/FIX
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21 Replies Received
21 Replies Received
Related Documents & Media | VIN | 1FTEF149FE |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always, Hot |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
1996 Ford F-150 Special
| VIN | 1FTEF149FE |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always, Hot |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video