I have a bone stock 2005 King Ranch 6.0 Crew Cab Dually 4WD that cranks and runs good, then after some time (30+/-) it just dies or if I shut it off it wont crank back. After it sits several minutes it fires back up. No check engine or codes. I replaced the cam sensor, run it with the ICP unplugged (it still died). I checked the FICM voltage... a sad 44.3 volts, but as mentioned, it cranks/runs fine, it just dies. My diesel knowledge is about a 6 out of 10, so I look to ya'll for help.