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2000 Ford F-150 System too lean in bank 1

Tiny
CHIDO11
  • MEMBER
  • 2000 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
Does anyone know what this mean? I also have a Air intake temperature low voltage circuit 2. 2000 Ford Lightning thanks in advance.
Tuesday, September 14th, 2010 AT 3:46 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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Tuesday, September 14th, 2010 AT 4:12 PM
Tiny
MUDDIGER
  • MEMBER
  • 6 POSTS
If you replace the egr valve and the pcv valve it should fix the problem
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Tuesday, September 14th, 2010 AT 5:11 PM

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