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Trouble Codes

Tiny
LINDATBIRD
  • MEMBER
  • 2001 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 108,000 MILES
I have a 2001 Ford F-150 2W V-6. Receiving trouble code readings P0171 and P0174. I need to know what to check to correct problem. Fuel and air filters have been replaced recently. Vehicle misses intermittantly upon acceleration especially on steep grades.
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Thursday, February 24th, 2011 AT 4:41 PM

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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Sunday, March 20th, 2011 AT 12:01 AM

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