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1998 Lincoln Navigator 5.4L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
vehicle s.e.s light will come on after 15 to 20 miles of driving code p0171 and p0174 will be set. Customer has added fuel additive to the tank. The o2 sensors were powder white spark plugs were also powder white. Fuel filter was severly restricted. It has the...
FIX posted 6/27/2002
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Message Closed w/FIX
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14 Replies Received
14 Replies Received
Related Documents & Media | VIN | 5LMPU28L1J |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
1998 Lincoln Navigator
| VIN | 5LMPU28L1J |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video