Some stuff is bad right out of the box.

after she cranks awhile it will fire up rev up to 2k then die. idk don't want to buy a ip if I don't need it but im lost on what to check. I doubled checked the pmd with a different meter and I was getting about .6v on the b and f plug

Is this pmd on an extension? My pmd acts funny sometimes as well. Not as bad but I have had to replace the extension cable because their was so much resistance it burnt a pin out of it. I now need the short one, the original one because the female pins are getting corroded and shorting, causing random dying, floor it-rev to 2k-act like it's dying all the way back to 800-repeat-all while blowing a mix of black, grey, and white smoke, weird surging sometimes when I hit the brakes. When you say you're getting .6 at the pmd do you mean at the connector of the IP or the connector of the extension? Replace the cables or try removing the extension temporarily. Check all the grounds. Make sure your not getting air in the fuel lines somewhere. Good luck

.6 at the pmd. Had a hard time getting a reading by the IP. Ill move the pmd back to IP to eliminate the extension. Ill have to find some clear line for the return also

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Just remembered the new pmd has a different plug so that won't work.

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Couple things I'm remembering as I go on. One thing the speedometer will read a speed while cranking. It won't just jump up to 10 but while cranking it will build up like. 5mph per rotation. And there was some mystery fluid under the truck want to say it was about center where the engine and transmission mate

The connectors for the pmd are not different. If you have an extension, it should plug into a short cable that then plugs into the ip. That short cable should be grounded on a bolt on the top of the ip. This is the original pmd cable and you should be able to just plug it into the pmd.
The "mystery fluid" you're seeing at the bellhousing is most likely diesel coming from the back of the filter manager in the backside of the valley. This is a common leak, I'm pretty sure mine is doin it too I'm just too lazy to change the lines.

Its a after market pmd. A gray one

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another thing that i remember is the surging pmd, seams to be melted at the "F" pin. both the old male plug on the relocation harness and pmd where melted. wonder if anything else got damaged. its kind of weird how one pmd will surge to 2k but another if it starts right it wont respond to past 1100 then after you shut her down she wont rev past 500 or so

The grey and the black PMD's do have different connectors,the wiring is the same but connector housings are different.
http://www.kennedydiesel.com/docs/FS...nterchange.pdf

Also the water in fuel sensor O-ring as well as the fuel heater O-rings are what is the most common filter housing leak.

took the pmd and harness to another 6.5 and she fired right up. so whats left? i will try to crack the fuel lines at the injectors when i get around to it prob be tomorrow. would i just be making sure they are getting fuel or should i make a pop tester and go ahead and pull the injectors.

i know its getting fuel (smoke while trying to start and it actually starting) so what sensor/switch would mess up like this? if it was mechanical wouldnt it be screwed up all the time? so does this eliminate the ip. what sensor would screw with the throttle to the point that it would only respond a couple hundred rpms(to 1200rpms). then once she ran a couple minutes she would screw up and not rev past 600. then why would one pmd box work but surge and the new one not do anything or if it does start its smoking?

I would say it's the IP.
Sensors throw trouble codes when they are at fault unless the ECM is the problem?

If I swap ecms is there any relearn or security things I have to deal with?