out of timing?
this happened to me a couple of times. when i start the truck, it wants to bog and die, i have to rev it to keep it running, its not willing to rev past 2,000rpm with out it wanting to self-destruct. the weird thing though is when i restart the truck though, it runs completely normal. what would cause that to happen? bad coil pack? cam positioning sensor? what?
for those who dont know, it has a 4.0 OHC