Keep replacing coil pack on same cylinder #2, 5.4
97 5.4 with 120,000 miles. I have been having this problems for a while now. I get "bumps" or misfire sporadically then more consistant and then finally the coil pack quits working and the check engine light goes on. I get code P0302, and P0352, both indicating cylinder #2. I have replaced the coil 3 times now and it works for a short period and goes bad.
I have tried to chase down a short in the wires leading to the coil pack with no avail.
The plugs were replaced at 65,000 miles. The coil pack has a new boot everytime I replace it.
I cant believe I keep getting bad coils, so it seems there must be a chaffed wire. Although the new coil works for a little while, it seems if the wires were bad no coil would work.
If anyone can fix this they are officially "THA MAN"