New to forum, Have a 2003 Rubicon with a 4 1/2 in. Rubicon express long arm lift, 16in. wheels, LT285 Bfg all terrains. Currently has issues at 105K Mi. and could use some help.
Cel came on and I went to Autozone and got code was told possible o2 sensor. Suggested I could use fuel injector cleaner if hadn't used. So I did, and problem went away for a short time. cel came on again this time got print out and code P0137. Was going to buy O2 sensor but haven't yet. Didn't drive for 2-3 days and there was no cel on when I had to drive it and it ran fine. Later my Wife went to drive it and it wouldn't start. No cel on, all gauges fine. So I tried to start it and nothing until I gave it gas while starting, but as soon as I take my foot off the gas the engine quits. Tried again and held gas pedal for a few mins. and then it would run but lower than normal rpm and rough. Is it still just an O2 sensor or something more? Was also suggested that If I am going to replace 1 sensor, I should replace them all. Good Idea or not necessary? Any help from some experienced members would be greatly appreciated Thanks!