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  1. F

    Rough Idle, Check engine light

    Instead of running cold I should have said. It is taking longer than usual to warm up.
  2. F

    Rough Idle, Check engine light

    2000 Explorer XLT 4.0 liter OHC (I think) Has a check engine light constantly on not blinking and had a rough Idle. The #4 piston was misfiring so I changed spark plug and wire and the idle is dramatically better. Probably need to change rest of plugs and wires which will help the idle even...
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