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This seems to have fixed the above problem as it has been over 2 weeks with none of any of the indications returning: In my case, it turned out to be failing upstream O2 sensor. The big clue was was that I had a slightly wandering idle when it was running “good”. After reading a lot of forum...

Ok. I have a 2005 liberty sport with the 3.7. Got it cheap from the po, because he didn’t use it and was tired of paying a shop to chase this issue. It was clean and straight, so I thought “what the hell”. I have read about 1000 different threads here and elsewhere. What happens is: jeep...