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2004 Lincoln Navigator 5.4L Misfire, Poor Fuel Economy, MIL Lamp on
I am having problem finding the reason why bank one is rich and bank 2 is lean. i think that is my cause of the misfires. cruising fuel trim is b1 ltft -19 b2 ltft 30. all four o2 sensors are switching. any advise would greatly be appreciated.
FIX posted 6/23/2015
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Related Documents & Media | VIN | 5LMFU27R14 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2004 Lincoln Navigator
| VIN | 5LMFU27R14 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
| P0300 | Multiple Misfire Detected |
Video