dodgedieseldad
12-30-2007, 02:16 AM
my brother is using my truck to haul a skidsteer to oklahoma outside of tulsa the truck wont run over 2000 rpm if there is anyone knowledgable about duramaxes in the area please call me at 816 738 9355 im south of kc mo 40 miles and cant drive down there because my girlfriend is 2 weeks past her due date the baby could come at anytime. yes there is a new fuel filter he put it on on the side of the road sounds like a fuel rail pressure sensor to me but cant be sure without being there any help would be greatly appreciated
sparky1562
12-30-2007, 11:06 AM
Do you know if he primed it correctly after he change the filter? Make sure he pumped it until it was hard, opened the bleed screw and pumped it until no air bubbles come out. Also, have him check the gaskets and make sure they sealed up correclty, and that the WIF sensor is tight.
I checked the temp in Tulsa, was not that cold, so I doubt it is gelled fuel.
On edit: maybe I miss read that. Did he get it restarted and it still won't run over 2000 RPM? sounds like he limped it.
duramaxdiesel
12-30-2007, 11:10 AM
Is the CEL on? Could it be in limp mode? Have him cycle the ignition a few times and see if it will drive normally again.
dodgedieseldad
12-30-2007, 01:56 PM
it has a pump so priming isnt an issue he limped it to an advanced auto and scanned it po 238 and another that said massive fuel leak i think the fuel pressure regulator is toast. theres no programming in it right now just stock. it will come out of limp mode but goes right back when he accelerates. my buddy is on his way to pick up the truck and bring it home thanks for helping guys i appreciate it