Fuel pressure regulator, or a stuck relay.
on the bottom of the throttle body
I take it you have daytime running lights , if so by engaging the emergency / parking brake the daytime running lights should go off
no
42
The optional diesel engine in an '04 F250 Ford is a 6.0L V-8 Turbo Diesel made by Navistar (International)
On the front part
It could either have a gasoline engine or a diesel engine
7.5
What year F250 and what engine??
What Year model
Yes
the firewall on a f250 is the wall of the cab between the engine and the passenger compartment on any vehicle the firewall is the wall that seperates engine compartment from passenger compartment