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Code PO174

Tiny
PATRICKAHLA
  • MEMBER
  • 1917 FORD EXPLORER
Ford Explorer Sport 188,000 miles.4.0 engine.
I have a code PO174. System too lean(left cylinder bank)I have already replaced o2 sensors on both banks. So now I have no idea what to do. Could someone please help.

Thank you.
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Tuesday, January 16th, 2007 AT 1:17 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
If there are no vacuum leaks then its probably the Mass Airflow Meter. Ford ahd some problems with them.I would go to the dealer even if there is an aftermarket unit available
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Tuesday, January 16th, 2007 AT 1:42 PM

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