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1996 Ford F-150 check engine light

Tiny
BEVERLYHOOTEN
  • MEMBER
  • 1996 FORD F-150
Engine Mechanical problem
1996 Ford F150 6 cyl Two Wheel Drive Manual

the codes are P0171, and P0174. What are they and how do you fix it.
Thursday, July 1st, 2010 AT 8:19 PM

2 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Need to replace your vehicle's oxygen sensors
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Thursday, July 1st, 2010 AT 8:30 PM
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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Thursday, July 1st, 2010 AT 8:31 PM

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