Not your average vp44 question

[Dieselinmyblood]

Ok, sorry it’s been a bit ... my girlfriends friends car is currently blocking the truck in the drive way . I’ve checked a lot of the grounds and they are the same or within .01 of the battery with a fluke 87. I know this is a small update but IBMobile got me to thinking about some other info i read/watched. It’s rare, but smart people put Cummins engines in ford trucks or other projects. I’ve seen a video of some one “hotwiring” (his words) an ECM and vp44 system. I’ve printed off moparmans schematics and one other that seemed worthwhile . Can I (key off accept for steering lock) send both powers to the ECM and drive the truck like that ? Isolate literally everything accept the ecm and vp44 ? It’s a manual after all

[Mopar1973Man]

1 hour ago, Dieselinmyblood said:

Isolate literally everything accept the ecm and vp44 ? It’s a manual after all

 

No, not really. Being you need the PCM to start the CCD network. You need the ABS computer for road speed signal. Without the PCM you can't read any error codes from the OBDII port. Without the PCM the speedometer won't work and the grid heater won't cancel for road speed.

 

These are common issues with retro fitting 24V ISB Cummins. Once you isolate the ECM its a dumb computer and lots of other mods end up happening. Best to fix the existing problems that moding around the problem.

[JAG1]

I have two second gens so a lot of bullet proofing gets done to both trucks. I just want to say that the G 100 ground was hidden on both mine. Hiding under a small bit of wire harness way down low in front of the drivers battery on the fender, but underneath a bit of that harness that it makes it like nothing is there, but is.

 

I'm into reliability and bullet proofing more so than anything else. Enjoy having a truck that everyone wonders how a museum piece can run for so long. I'm out to prove the best in reliability without buying a new truck. Just like my wife..... the older she gets the more I'm hooked on her.

[Dieselinmyblood]

16 hours ago, Mopar1973Man said:

 

No, not really. Being you need the PCM to start the CCD network. You need the ABS computer for road speed signal. Without the PCM you can't read any error codes from the OBDII port. Without the PCM the speedometer won't work and the grid heater won't cancel for road speed.

 

These are common issues with retro fitting 24V ISB Cummins. Once you isolate the ECM its a dumb computer and lots of other mods end up happening. Best to fix the existing problems that moding around the problem.

I’m not trying to do it permanently. I meant once it’s acting up I can flip a switch to send power where it needs to be and turn the ignition off so it isolates it to only the ecm and vp44. I’m not looking for codes since it hasn’t produced any, anyways and I have a gps to monitor speed . It’s just a test . If my issues go away I can start hunting wires or the pcm if they stay then it’s a pump or ecm . 

 

15 hours ago, JAG1 said:

I have two second gens so a lot of bullet proofing gets done to both trucks. I just want to say that the G 100 ground was hidden on both mine. Hiding under a small bit of wire harness way down low in front of the drivers battery on the fender, but underneath a bit of that harness that it makes it like nothing is there, but is.

 

I'm into reliability and bullet proofing more so than anything else. Enjoy having a truck that everyone wonders how a museum piece can run for so long. I'm out to prove the best in reliability without buying a new truck. Just like my wife..... the older she gets the more I'm hooked on her.

 

I actually found those grounds yesterday afternoon. 

Edited June 1, 2019 by Dieselinmyblood

[IBMobile]

10 hours ago, Dieselinmyblood said:

It’s just a test . If my issues go away I can start hunting wires or the pcm if they stay then it’s a pump or ecm . 

I'd give it a try.