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p1131
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  1. 4.6L Tech
    Ok so im kinda new here so hey.So i just put a bbk off road x pipe and a borla cat back on my car with the SR Performance Plug-in MIL Eliminators so the check engine light wont come on.Everything was ok then five days later the check engine light came on and i got 3 codes which are p1131 ,p0171...
  2. SVT Cobra Tech
    Hi I am new and looking for some information. I have a 1999 svt cobra that I just purchased and I keep getting the P1131 and P0135 codes. I have replaced the bank 1 sensor 1 o2 sensor and I still have the CEL come on. It has a K&N, long tube headers, 4 cats and no mufflers. I have checked wiring...
  3. V6 Talk
    Ok my first mustang,and ive been reading a bunch of good info, 3.8 v6 resufaced head job and up, also new timing chain to go with it, why not, im kepping it. Reading code1131, car stumbles, acts stupid while acelarating, missfire, jerking, couple of vacum leaks im going to fix, if that dont...
  4. V6 Tech
    My check engine light came on last night, so I got codes ran on it and it came back with a P1131 code saying something about the bank 1 being too lean. It's a 1996 base V6 manual with 99,400 miles on it. If anyone could help me I would greatly appreciate it. Thanks guys. Thanks, Logan
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