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  1. 03 WJ with confusing & contradicting problems

    Drivetrain Tech Center
    I've been dealing with this on and off problem for 7 months now. This is a 2003 WJ 4.0l. I sometimes get a misfire code for cyl 3, after being cleared a month goes by and it shows up on cyl 1. Every morning when it first starts, it's rough like an old ford thats half dead. I give it a litle rev...