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    P0303 engine code on 2008 Wrangler JKU

    Hi. My Jeep has over 223,000 miles on it. This has been a great Jeep! Recently, upon acceleration it started stuttering and misfiring, and I am pretty certain it gives a slight backfire when I mash the pedal. Check Engine light flashes, but does not stay on. It sounds like a John Deere tractor...