Hello. I've read numerous threads already about this issue but feel like a may be missing something. I have a 2003 f350 7.3 with 209000 miles on it. I'm in Alaska its about 50 or 60 degrees at the moment. Tach doesn't move when cranking. The truck will not start unless plugged in. Rough idle when it does start until it gets to operating temp then runs fine. No change when I unplug the ICP and looks to have been replaced before. Oil change ~2000 miles ago with 15w40 and oil level look good. Changed fuel filter and filled the tank up and put Lucas injector cleaner and half a court of automatic transmission fluid in with it to clean injectors. Passenger side valve cover has had new pluggin. This truck is giving me a headache. Please help. Thanks in advance.