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V-6 F-150

Tiny
TLCROSBY
  • MEMBER
  • 2001 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 164,000 MILES
I have 2001 Ford F-150 (V-6) that the check engine light has come on. I have replaced the EGR Vavle, MAF Sensor, DPFE Sensor and the valve cover gaskets and cannot get the light to sty off. The code is for lean bank 1 and 2.
Wednesday, April 20th, 2011 AT 6:33 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I assume you have codes PO171 and PO174. These codes are common on a Ford and are nearly always caused by a severe vacuum leak. Listen for a hissing noise at idle and try to follow it to it's source. The rubber connectors and PCV hose are common locations for the problem.
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Wednesday, April 20th, 2011 AT 7:51 PM

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