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misfiring
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  1. Problems / Dealer Service
    We have a 2006 Commander V8 4.7 with almost 200,000 miles. The more work we have done, the more the worse it gets. The mechanics we have taken to say they can't figure it out, but I don't know if I believe that. I think they just didn't try hard because they knew we had spent most of our money...
  2. Problems / Dealer Service
    The engine was misfiring just a few weeks ago but not enough for the CEL to come on. Big Zaddy starts and idles just fine and misfires around 35-45 mph. I purchased a set of NGK Iridium IX spark plugs and ENA ignition coils and took her on a test drive. Within a mile she started misfiring badly...
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