Ford Repair Questions? Ask a Mechanic for Answers ASAP
First off did you clear the codes after replacing the coil and plug?
Is it a misfire code P0305 or a coil code like P0355
Brad jumped in when he shouldn't have. Yes we are having problems with the coil driver wires breaking at the pcm harness connector. I'll post the pcm pin out here in a couple of minutes. Here it is pcm pins, check number 27 real close, pull on it and see if insulation streches, if it does its broken inside. check 26 too that one is real bad about doing it. That diagram will be upside down, 26 should be in the drivers side lower corner. Confirm wire colors. You will have to remove the black shield around the bolt and cut the tape holding it on to inspect them.
Check the previous post for the pdf file link. The site seems slow in updating tonight, so please be patient. I was editing my answer while you were trying to look at it.
please post your findings when you get a look at it, I really am interested to see if that is the problem.
Ohm that wire back to the coil from the pcm with it unplugged while bending the harness around. It should stay below 5 ohms. I still think it might be semi broken, it can break the wire with out breaking the insulation, you need to pull on it. Take off any add on wiring and seal off, heat shrink is the best