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Ford Expedition 4X4

Tiny
SCOOBY-DOO$
  • MEMBER
  • 1998 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 164,000 MILES
Check engine light is on. Had it put on scanner and it said running lean on bank1 and bank2. Was told O2 sensors, so I replaced all 4. No luck had code cleared and came back on.
Tuesday, November 30th, 2010 AT 12:34 AM

1 Reply

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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Tuesday, November 30th, 2010 AT 12:37 AM

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