2000 Ford Explorer codes p0171 and p0174

2000 FORD EXPLORER
124,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FLIKK FAMILY
  • MEMBER
  • 1 POST
I HAVE CHANGED O2 SENSORS, SPARK PLUGS TWICE, SPARK PLUG WIRES TWICE, AND HAD 4 MECHANICS TRY TO FIX IT. IT WILL GO OFF FOR ABOUT 2 DAYS AND THEN COME RIGHT BACK WHAT CAN I DO?
May 15, 2008 at 7:37 PM
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MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
your problem is either a leaking intake manifold gasket or a faulty mass air flow sensor. unless you have a scan tool that can watch o2 sensor voltage when cold to determine if thats when its running lean then replace mass air flow sensor and if the light comes back on then you know its the lower intake manifold gaskets are worn
May 15, 2008 at 11:33 PM
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