cumminsman87

OK. That is what I thought too. Just wanted to make sure I am on the right track.

Here are the instructions for #8 8. Ensure ignition is off and FPCM harness connector and ECM harness connector are still disconnected. Using DVOM, measure resistance between ground and terminal No. 1 (Black wire) on FPCM harness connector. If resistance is 5 ohms or greater, replace and program ECM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. If resistance is less than 5 ohms, repair short to ground in Black wire between FPCM and ECM. I am getting an open loop. So that is greater than 5ohms. Please correct me if I am wrong or there is something else I need to check.

I was able to run through the tests again this morning. Here are the results. Step #3 12.31 Volts #4 .1 Ohms #5 .1 Ohms #6 Open Loop #7 .3 Ohms #8 Open Loop. So I guess I have a bad ECM? If someone could explain how this tells me I have a bad ECM I would appreciate it. WIth the ECM being unplugged in this step im not understanding. Thanks

I was told the alarm was set off at one point when it stopped running. But then he had it running once after that. So I dont really know for sure.

Yes sir. Even pulled the horn to get #2.

Yes i have followed those directions before purchasing the vp44. Everything checks out. Edge is unhooked as well. I had both batteries tested this evening. One tested a little low on cold cranking amps so it was replaced. The other tested out good. I do have some black smoke coming out the tail pipe.

Thoroughbred Diesel.

Yes, it does keep running. And no have not got it started yet.

I waited for the fuel pressure to build through my snubber. Just trying to eliminate fuel pressure being an issue.

Hello Guys, New to the forum. Recently bought a cab swapped 2001 24v 5.9 6 speed with a 15x VP pump. I bought the truck not running and dont really know alot about the mods that have been done to it. It does have an edge tuner and a dual turbo installed as well. I have replaced the VP44 and still have a no start. I have bled the return line banjo and 1, 3 and 4, to the point of flowing good. I have 20psi coming off the fass lift pump dropping to 10psi while cranking. I do have power and ground at the vp plug. I have also tested continuity and grounds from ECM and PCM. Replacing the VP44 did change the sound while cranking. Before it was just cranking. Now it seems like it is trying. Looking to be pointed in the right direction. Thanks

Vehicle Nickname: Cumminsman87 Date Added To The Garage: 2022-12-11 Garage Link: Cumminsman87