While driving one day I heard a loud pop and it lost power. I had a bad coil pack before this so I thought it was the same thing again. Had it scanned sure enough coil #1 misfire primary/secondary circit. Changed the coil pack forgot to reset the computer, not far down the road it started again. So buy coil pack and plug replace still same thing only never got better this time. So do I replace it again and try to unhook the battery before starting it even though the battery died and I had to jump it. Is that enough to reset the code? Help I don't know what else to try it's just getting worse now 1 and 4 are bad. Could my engine be blown?
Read more: https://fordnews.org/expedition/loud-pop-then-loss-of-power-03-ford-expedition-4x4-5-4.html
