Outragous Rpm

[northerndisel]

I have a 99 chevy 1 ton 6.5 turbo diesel i am having a problem with the rpm jump from nothing to full when it is in park or nuetral it seem like when i start to give it gas it jumps and starts to rev out of control just wondering what it could be

[KutzlerTrans]

Check the wire loom behind the alternator for arching. I will look at some info tommorow on this. It seems to me i remember seeing this before

[northerndisel]

i have and there is no arching going on i just wondering if maybe it has soem thing to do with the throttle body sensor or somehtign in that lines

[97diesel4x4]

diesels don't have throttle bodys or blades that close in the intake.
They run off the amount of fuel that is injected and the 94-up 6.5 diesel are drive by wire so the throttle pedal is where your problem is because it sends the signal by wire to the injection pump.
search on these sites there's a lot of info www.dieselplace.com ,

www.sixfiveturbodiesel.com and www.thedieselpageforums.com

[northerndisel]

would liek to know if it could be the armature shaft

[chrisk1500]

Bad sign - points to IP failure.

How many miles on the truck - IP may still be under warranty.

[97diesel4x4]

Do a search on fuel solenoid armature screw. Or armature shaft . It sounds like either the screw is loose or broken. There is a possibility of fixing if it is just loose, if it is broken, the only fix is a new IP.
The solenoid itself is not serviceable.

Do the search, you'll find a couple of threads on this.

[northerndisel]

Sorry but dont mind me asking what is the ip

[chrisk1500]

Injection pump....