2000 Ford Windstar lean codes in bank 1 and 2

2000 FORD WINDSTAR
145,000 MILES • 6 CYL • FWD • AUTOMATIC
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HCASTEEL
  • MEMBER
  • 1 POST
What is the most common cause for this van to have banks 1 and 2 lean? I have replaced o2 sensors, vacuum lines, and cleaned out intake with sea foam. I have had in shop 5 times and I get the same thing every time I get it back. After 2 days I get the codes right back after spending up to $100.00 at a time. Can you please help me with this issue?
Jun 4, 2010 at 6:39 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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.
Jun 4, 2010 at 7:00 PM
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