P0358 Ford - this code comes and goes. Just put plugs in it.

Question

I just put plugs in my truck and this code comes and goes. I repleaced #8 coil pack and am still having the same issue. Could the issue be a bad Plug?

Answer 1

its possible, just replace that spark plug as well and see if that fixes it.

if that does not fix it just post a new question and I can post how to check the wiring or how to check the ECU. You may have a wiring issue before a bad ecu