I'm hoping that someone can give me some help on this!

Truck: 2001 F250 7.3L powerstroke turbo diesel
124K miles, superchips micro tuner (set at stock at the moment)

Problem: Runs great when cold, no cranking issues at all, BUT after about 30 miles being driven, it starts acting like its missing or shuddering and then shaking, then gets worse the more you drive it, to the point of hardly pulling at all. No noticeable smoke at all, (but fuel gauge does seem to drop some during the time period, maybe its my imagination)Trying to increase the RPM's does nothing keeps doing the same thing. You can pull to the shoulder, turn the truck off for a few minutes shut it off, (and one one occasion it ran better after idling for a few minutes) (no problems ever re-cranking) and resume driving for a short period and then it starts acting up again.

It was showing codes of 603, 340, 1211, 1280, 470

Replaced the following trying to resolve the issues, with no luck
Injectors,Cam sensor, ICP, IPR valve, BPS and tube

Now its only showing the 1211 but still does the same thing.
I've checked the Ohms at the 9pin connectors with around 2.6ohms to 3.1 on most of them, all were around the same. So i'm assuming maybe no loose connection inside the valve covers (as i've read about here)

Other notes, oil has less than 100 miles on it, filled properly.
I'm a heavy equipment mechanic, not well versed on Ford Diesels, but this truck as taught me more than i'd ever needed to know (lol) So, if anyone has input, I can pretty much follow along with what they are telling me,

(sometimes though spelling things out helps )

ANY input would be GREATLY appreciated!

(ready to follow the match/lighter fluid combination instructions lol)

 

Man, it looks like you've already got the bases covered. I'm sure somebody will be along in the morning that can give you some advice. Right now, all I can do is say welcome to FTE.

 

Thanks! and to be honest, i've had the site added to my favorites for quite a while! I usually pop in, do a search for what I need (that usually answers things for me) and pop back out, this is the first time the huge archives here have not answered my problem so far! and maybe this thread will help me, and others that have similar problems in the future. I'll make sure I post the solution to the problem also when its resolved! (i've noticed some don't do that, so you don't know if it got fixed) And also, I think I need to stick around and help others where I can to kind of re-pay all the times i've used the info here to help me!

 

Any chance you can rig up a fuel pressure gauge to monitor that? Temporarily run it up to the windshield cowl not into the truck.

 

I would go ahead and pull the valve covers and check the connections.

 

Drive around for 30 minutes, and when it starts acting up, pull over and check the oil dipstick. Report back to us and tell us if you see bubbles or foam on it.

 

I'll second this. Sounds likes a fuel supply/pressure issue.

 

Same here. Sounds like the pickup screens are clogged.
Fuel pressure is gradually tapering off.
Pulling over and letting it idle for a few minutes and have it gradually recover is a good giveaway. Fuel demand is lowest at idle and the fuel pump has time to restore fuel pressure with what little fuel volume it can supply.
.
Drop the tank and clean out the screens on the mixing chamber.
While it is out, eliminate the return hose from the fuel return to the mixing chamber so that the only fuel that the mixing chamber will get is what it picks up through the foot.
Leave the return hose open so that it dumps into the tank and not the mixing chamber.
Cap off the mixing chamber nipple so that it won't draw air and reinstall.

 

I'm working on rigging one up now, So I can check it "real time" as I drive it, so I can see any changes etc.

I'll be sure to do that also.

I'm hoping to resolve this without having to get into the valve covers again (yay) BUT *** hmm just a thought, maybe I should check the Ohms while the truck is acting up *DUH*
I checked them last night (about midnight) while the truck was very cold, and would not have been acting up, maybe that can show a difference.
I'll post back on all 3 and i'll keep an eye here also for any more input!

 

I noticed a small puddle of oil in the "V" just now (don't know how I didn't notice it before) And the surrounding area is oily a little bit also, could this be related to the issues some how?

 

That is probably a leak on the high pressure oil pump (HPOP) body or one of the o-rings that seal up the high pressure lines to the heads.
Definately not the cause of your problem right now.
If it was it would be leaving huge puddles of oil on the ground.

 

Ok, i'll try that as soon as I report back on the other methods i'm trying now I have the laptop out here with me at the truck thank god for wireless internet I can keep a eye on the site while working lol

 

Good luck to you.
I have to log off for now and go do weekend chores, but will check back later.

 

Ok, just got back from the first test drive, the fuel pressure may be the culprit as it did it again, let it set idle for a minute, was able to drive a few more miles until it started bad again, And yes there were some bubbles on the oil dipstick. I'm leaving my laptop here on my work bench running, i'll refresh the page every so often to check back as I drop the tank and follow Kwikkordead's suggestions.
Any input from anyone is appreciated

The suggestion from my neighbor about full coverage insurance and a ... well nevermind haha

 

And i'm re-running the Ohms test also while its hot, and been acting up to check the 9pin,... Does anyone know how to test the ICP wiring? I did notice the plug-in on the new ICP doesn't seem to fit real snug, with some play in it, its snapped in all the way, but still seems loose. And there is some oil residue inside it i'm cleaning out (from the bad ICP I replaced that was leaking oil out the end)