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    Engine Sputtering (Misfiring?) - Ideas?

    I took it to the dealership last week and they were able to diagnose the misfire even though the CEL never came on. Misfire on 3 so they replaced the spark plug and coil pack - all covered under warranty. Running great now!
  2. H

    Engine Sputtering (Misfiring?) - Ideas?

    Also, the check engine light has not come on, which surprised me for how rough it is idling especially.
  3. H

    Engine Sputtering (Misfiring?) - Ideas?

    Hi everyone, new poster here. I purchased my 2012 Expedition EL Limited in June with 17K miles and it has been a great vehicle the last few months. Beginning yesterday I noticed it was idling a little rough and sometimes you I would a little loss of power when accelerating. I've driven it a...
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