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2001 Focus Engine light on

Tiny
RON CAHILL
  • MEMBER
  • 2001 FORD FOCUS
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 124 MILES
My 2001 Ford Focus engine light comes on repeatedly for same problem, have turned it off with my obd11 after reading code PO101, lean to bank2, its due for inspection in n.J. Probably will fail account light?Car runs great, but will sometimes stumble when idling, thats when eng. Light comes back on.
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Wednesday, February 16th, 2011 AT 8:30 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
While it could be a O2 sensor, I would start by cleaning the Mass Air Flow sensor with a MAF cleaner available at any autoparts store.
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Wednesday, February 16th, 2011 AT 8:34 PM
Tiny
RON CAHILL
  • MEMBER
  • 3 POSTS
Had new 02 sensor installed 18 months ago, both sensors appear to be working fine, was the sensor in front of engine, no.1 Ithink its called.I have been reading up in my ford repair manual and seems like you are right, I believe problem has to be air/fuel mixture related myself. Will follow your advice. Thanks alot.
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Wednesday, February 16th, 2011 AT 8:41 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Thanks for using 2carpros.
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Thursday, February 17th, 2011 AT 4:52 PM

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