1996 Mercury Cougar XR7 "p1131" Questions

Running Rough: P1131 & P0171 DTCs Hey :) I have a 1999 Mercury Cougar that is running rough. I ran a diagnostics on it and came up with two codes: P1131 & P0171. I am wondering what the likely

...air when you give it gas i put it on a soulus computer and im getting codes p1780 p1000 p1408 and p1131 please help Theres a vacuum leak. check the tubing to the PCV and the big tube that goes on ...

fault codes ''failed smog check'' I need to know what these fault codes mean: p1744 p1131 p1151 and air conditioning electrical diagram ...

...99 the check enguine is turn on and I went to autoozone for a computer diagnostic and the codes was P1131 and P0171. I don´t know what is the problem. Credit goes to the person who posted it. ...

my 99 cougar is running lean and has 5 error codes po171 p1131 p1151 p0420 p0174 i read the chart but dont no what they are or what the problem is ?? help check the car for vacuum leak or leaks,all ...

2000 Mercury Cougar 2.5l V6 with following fault codes: P0304, P0136, P0156, P0420, P0430, P1131, P1151, P0505. Car was throwing cat con fault. I removed the converter. Idle Air Control valve was also

...but dont no what they are the codes are P0402-- Exhaust gas recirculation Flow Excessive Detected P1131--Lack of H02S11 Switches Indicates Lean Please Help i already Replaced My EGR Vacuum Solenoid ...

code p1131 on a 1999 mercury cougar manufacturer control fuel air metering? Lack of HO2S-11 Switch, Indicates Lean.Right bank front 02 sensor. When an HO2S sensor indicates lean at the end of a test, ...

how do i solve a p1131 problem on my 1999 mercury cougar Probably a leaking intake gasket, or cracked/broken vacuum hose. I would suggest have a professional tech diagnose it.

...fuel trim bank one condition, P1151 could not adjust fuel trim because of a lean or rich condition, P1131 detected bank 1 02 at its lean limit. These codes to me seem like they are pointing to a fuel ...