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1998 Lincoln Navigator 5.4L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
Hi, I have what seems to be a case of unmetered air getting into the engine. The codes p0171 and p0174 set quickly. The engine has been checked for vacuum leaks using a smoke machine. I am satisfied that there are no hose leaks, but am not confident that the s...
FIX posted 6/10/2004
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Message Closed w/FIX
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16 Replies Received
16 Replies Received
Related Documents & Media | VIN | 5LMPU28LXW |
| 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 | Hot |
Trouble Codes
| 171 | Bank 1 Lean |
| 174 | Bank 2 Lean |
Message Closed w/FIX
Vehicle Data
1998 Lincoln Navigator
| VIN | 5LMPU28LXW |
| 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 | Hot |
Trouble Codes
| 171 | Bank 1 Lean |
| 174 | Bank 2 Lean |
Video