1999 Ford F250 Bank 1 bank 2 to lean

1999 FORD F-250
102,000 MILES • V8 • 4WD • AUTOMATIC
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DAN SCHWAB
  • MEMBER
  • 1 POST
bank1 and bank2 to lean is my problem and it idles high when I first start the truck and it idles up and down after it idles down I changed the throdle postioning sensor and I was told to clean my maf sensor nothing helped if any one has a sugestion i would appreciate it thanks
Aug 25, 2010 at 4:45 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.
6.Oxygen Sensor.
Aug 25, 2010 at 5:54 PM
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