Truck lost power while driving

Reply Subscribe

Thread Tools

Search this Thread

#11

10-10-2012, 03:48 PM

bobfbigman

Diesel Bomber

Join Date: Nov 2009

Posts: 1,942

Likes: 10

Received 144 Likes on 130 Posts

That oil leak on the back could very well be the ICP sensor leaking, very common on this year and if it is bad enough the wire going to it will be damaged too and can cause some very wierd readings. You also might have lost the plug in the side of the HPOP, also common on these years and it can be fixed by tapping it 1/2-20 and installing a plug.
I agree that you have to find out what the ICP actual is compared to the dsired, this will tell you whats going on with the High pressure system.

Reply Like

#12

10-10-2012, 03:59 PM

wjjarvis84

Newbie

Thread Starter

Join Date: Oct 2012

Posts: 6

Likes: 0

Received 0 Likes on 0 Posts

Quote:

Originally Posted by Mdub707

Next time it does this, get out and unplug the ICP sensor, if you can. I know on your 03 it's buried in the back. If you can unplug it and then try restarting it, if it fires right up and seems to idle fine, it's probably just the sensor. If it still has issues, there's a high pressure oil leak. When you unplug it, it defaults to 2000psi desired, so it will start and run great, but you probably wont be able to drive it very fast, it's more for limping it home. If it still starts hard and idles choppy it's gotta be a high pressure oil leak. That, or the HPOP is starting to die on you. What were your ICP numbers when you went WOT?

I just replaced the ICP and pig tail. The pigtail was torn a little, so replaced everything. When I went WOT the ICP values went as high as 3700. This was before the truck started to mess up. Once the truck started to hiccup I tried to go WOT and couldn't get truck to respond well, so I gave up on that. I'm going to pull the IPR and check the screen. if the truck messes up again (and it will) I'll try to pull the ICP to get it started.

Reply Like

#13

10-12-2012, 07:46 AM

Mdub707

BOMBARDIER

Join Date: Oct 2007

Posts: 8,208

Likes: 260

Received 630 Likes on 510 Posts

Sounds good. 3700 is pretty solid, I believe the 03's didn't go as high as the later trucks anyways, I didn't think they even went up to 3700. Bob would know for sure. I know my 06 I've tapped over 4000 a few times.

Reply Like