98 Ford Expedition problem code P0171 P0174

Tiny
1024QUINTANA
  • MEMBER
  • 1998 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I got a 98 ford expedition and the check engine light came on and the guy at auto zone check it and the code was p0171 and po174 I think he told me to check all the hoses but I couldn't find anything so I call my father and he said it might be the fuel injecters and nowthe car engine is shaking acting like it's about to die like if I was running out of gas
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Wednesday, March 16th, 2011 AT 4:33 AM

1 Reply

Tiny
RASMATAZ
  • EXPERT
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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Wednesday, March 16th, 2011 AT 5:11 AM

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