Last attempt to fix it before i sell it.....any advice?!?!?

[FL_SmokinPSD]

Okay guys i know ive posted a lot but every time i think its fixed theres another problem.

Truck is a 2000 F350, 7.3 4x4 DP_TUNER, ITP Boost Anihilator, DIY intake, muffler delete.

Parts ive replaced so far, CPS, ICP, Fuel filter, oil filter, tranny filter, all fluids.
Had ford check it out, they said all they could find was a 1211 code "probably caused by DP_TUNER.

Heres the problem, Truck idles rough, if i hold it at 1000rpm its run really bad, gets 10mpg MAX city or highway. Went on trip got off highway and kept stalling at every stop light. sounds like waste gate was open a lot on highway but if i got off gas and back on it, it stopped.

ANY IDEAS ARE GREAT, and how to test them, even if its a long shot

THANKS GUYS YALL HAVE BEEN AWESOME SO FAR

[HVAC SuperTech]

maybe your EBPV is stuck? how many miles? is the sound a miss, like an injector is out?

[FL_SmokinPSD]

Its got 235k, im new to diesel, but its kinda like a knock or tap, but its not a bad motor, i hope yall know what im talking about.

[HVAC SuperTech]

I am gonna move this to the engine 911 forum section. Hopefully a tech can help yu out. be patient as they arent on right now. May take them till tommrow to answer you.

[cchase]

I would be checking the UVC harness to make sure it is getting a conection and doesnt have any kinks or tears

[FL_SmokinPSD]

uvc?

And how do i check the EBPV???
sorry for sounding like i know nothing....but its the truth.

[HVAC SuperTech]

are you getting a code? a UVC, or undervalve cover harness would pull a code, or SES light. Its the wiring harness that controls your injectors. more than likely not your problem. theres alot of miles on your injectors. If you dont know much about diesels, I would have someone from your area check it out. either that or wait for some more responses here.

A EPBV is a valve that opens after the engine warms up and has warm enough air cycling through the engine to open the valve. its closed when you start it up.

[cchase]

I would try and get a Buzz and compression test done.

Yeah I over looked the no real code thing, so its probably not the UVC

[bigcountrysg]

You need to have a shop run an Injector Buzz test, and cylinder contribution test.

The buzz test will tell you if the soleniods on the injectors are working or not. There for if all the injectors pass the buzz test then it is not a problem with the Injector Drive Module (IDM) or uvc or injector soleniods.

Then you move on to Cylinder Contribution test. This will tell you the contributing percentage of each injector.

Your problem sounds similar to what I just dealt with on my truck. How ever mine cleared up once the engine was at normal operating tempature. I ended up having a bad injector.

I took it to the dealer paid the 100 dollars so they could run the two tests I spoke of above. The result my number 8 cylinder injctor was bad. I replaced the one injector and that repaired the problem.

If there is nothing found with those two tests. The only other thing you can do is a compression test. Which you can do yourself if you have the gauge to do it. It does require a special adapter.

To check the ebpv it is located on the turbo before the downpipe. There is a little lever on the bottom of the exhaust side of the turbo. To see if it is stuck closed, you can disconnect the rod going to it. Then see if you can move the lever. It should move freely. If it is not moving freely then you need to remove the downpipe and inspect the valve.

You can also unplug the ebpv sensor that activates the ebpv.

[Broncoguy]

Not trying to hijack, but.. BigCountry, how did ford confirm that the #8 injector was bad. I just ran the test on mine with AE and it came back with a #8 cylinder fault code. Just curious if this was the same thing ford found on your truck.