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1997 Ford F-150 Lariat 5.4L Poor Fuel Economy, MIL Lamp on
All the Ford Techs out there: Have a strange one for you. This truck wil go lean at high speed cruise, And will have very little accel above seventy miles an hour, yet the PCM is showing lean fuel trim corrections in the -5/-7 range. The Oxygen sensors are sho...
FIX posted 1/1/2005
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Message Closed w/FIX
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Related Documents & Media | VIN | 1FTEF08L5V |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy, MIL Lamp On |
| Occurs | On Accel, Cruise |
| Misc. | 4X4/Shortbed |
Trouble Codes
| P0133 | Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response |
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction |
Message Closed w/FIX
Vehicle Data
1997 Ford F-150 Lariat
| VIN | 1FTEF08L5V |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Fuel Economy, MIL Lamp On |
| Occurs | On Accel, Cruise |
| Misc. | 4X4/Shortbed |
Trouble Codes
| P0133 | Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response |
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction |
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