First time poster, but I've visited here often.
I had an unusual condition with my son's 05 Liberty with the 3.7 last winter where when the ambient temp was 30-40F, It would misfire. Engine operating temp had no effect. It misfired when cold at the beginning of a trip and was misfiring at the...
Maybe an Intake Air Temp sensor and/or IAT connector problem.
This may seem "left field"... however, I have been chasing a P03xx ghost-in-the-machine problem for over a year now and I stumbled into a piece of trivia that may be the ultimate root cause. Hear me out.
If you search for stuff...
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