USING ACTRON DIAGNOSTIC ALARM CODE READER I GOT ...

  • Tiny
  • Anonymous
  • 1998 Ford Explorer
  • 135,000 miles

Using actron diagnostic alarm code reader I got a 171 and 174 alarm system to lean bank 1 and bank 2. Truck runs rough at idle but ok when driving. Could it be 02 sensor or fuel injector

Saturday, January 19th, 2013 AT 8:15 PM

1 Answer

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Low fuel pressure, vacuum leaks, mass air flow sensor and pcv are the common causes

Roy

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Saturday, January 19th, 2013 AT 8:17 PM

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