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1998 Ford Expedition Engine bogs down while at idle

Tiny
STSUPERNAUT
  • MEMBER
  • 1998 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 147,399 MILES
I did as you had said, "about going to autozone" to have the systems codes check. It came back with 4 codes, ie. P0171, P0174, P1131 and P1151. What is the next step to fix this problem? I just would like ya to point me in the direction I should go from here.
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Monday, June 28th, 2010 AT 7:22 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks
2. EGR and PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Mass Air Flow Sensor.
6. Oxygen Sensor.
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Monday, June 28th, 2010 AT 8:15 PM
Tiny
KEVINJRGASTON
  • MEMBER
  • 17 POSTS
Lucas Complete fuel system treatment (found at most autoparts stores) could take care of a couple of those issues related to clogs in the fuel system. It could be the o2 or egr, though
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Monday, July 5th, 2010 AT 4:23 PM

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