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Getting codes 172 O2 sensor lean bank 1, 173 O2.

Tiny
MATTHEWHILL
  • MEMBER
  • 1995 LINCOLN MARK VIII
  • 117,000 MILES
Getting codes 172 o2 sensor lean bank 1, 173 o2 sensor rich bank 1, 176 o2 sensor lean bank 2, 524 low speed fuel pump open circuit failure between battery and electronic control assembly any ideas on what the problem is
Thursday, February 28th, 2013 AT 11:33 PM

6 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Without seeing it, I would start with looking for vacuum leaks.

I would also get the fuel pressure checked.

Roy
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Friday, March 1st, 2013 AT 1:11 AM
Tiny
MATTHEWHILL
  • MEMBER
  • 5 POSTS
Car misses really bad in the low rpm range but does alright in higher rpm's
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Friday, March 1st, 2013 AT 10:13 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Definitely sounds like a vacuum leak.

Roy
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Friday, March 1st, 2013 AT 10:31 AM
Tiny
MATTHEWHILL
  • MEMBER
  • 5 POSTS
Ill check it out this weekend and let you know what I find
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Friday, March 1st, 2013 AT 11:59 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
We will be here

Roy
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Saturday, March 2nd, 2013 AT 2:43 AM
Tiny
MATTHEWHILL
  • MEMBER
  • 5 POSTS
Found 2 vacume leaks and fixed them car still doing same thing didnt help
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Tuesday, March 12th, 2013 AT 12:21 AM

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