Some help please....
I have an 03 with the 6.0. Yesterday while leaving work my truck seemed to misfire and have zero power. put it in park reved it up, put in drive and it was back to normal. run good for another 8 hrs last night. Go to get in this morning, turn my key on all lights in the dash turn on and then i go to turn it over. NOTHING. So after searching this site i found a thread on this problem. I pull the yellow wire and jump it, truck turns over but doesnt start, so i try it a few more times and finally it fires up. So out test driving it it does the whole missfireing and losing all power. What is causing this????? I rev it up and back to normal. Also i dont think my fuel pump was cycling on when it wouldnt start. no buzzing noice anyways. Any ideas on this? First time diesel owner so i have very little knowledge on these trucks, so any info and help will be amazing right now. Truck is stock except an exhaust system and cold air intake. Roughly 76,xxx miles. Thanks for your help