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  1. L

    2003 explorer - 4.0 - engine misfires

    i have a 03 explorer with a 4.0 has 157000 miles was running great , shut off .. came back next morn running ruff, scaned it ,, says random misfires when starting and when running , po303 - thru po305 and ,, bought it last year so i thought in need of tune up .. changed plugs ,, old ones lookd...
  2. L

    hi my name is larry im a new member

    i have a 2003 4.0 explorer ,, started running ruff & check engine lite came on . also flashes when driving ,, i went home and scanned it . it had po316 misfire upon starting also it has po301 thru p0303 engine misfire ,, pulled plugs all looked good but i put new set in .. same as wires looked...
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