Puke Dee Eye tuned 871 ecm, can't flash it to stock or connect at all.

[Rawze]

- Yeah, those morons out in Southern Nevada like to corrupt the h#ell out of the ecm programming into oblivion for all their customers. Their programming is also beyond absolute trash engine killing garbage not worth 3 cents. Seen plenty of their crap over the years, especially for the 871's.

As far as I know, their programming does not brick the ecm, but the copy process does fail whenever you try to copy the program out using CT, because of corrupted memory blocks (they do it on purpose) with their horrible garbage.

If someone want to see all their engine killing, terrible jacked-to-all-h#ell horrible, no mode control, complete garbage settings that badly, then a person can simply connect live and look at them, or document the entire ecm live, which takes a while, but is doable.

As far as the ecm goes, it sounds to me like it ended up in a catetonic state one way or another. I have my doubts of it being caused by simply trying to read the ecm image (though it would give you copy errors), but one cannot be sure sometimes.

It also might just be coincidence and it is simply a flaky ecm. CM870, 871, 570 ecm's are known to get flaky with age. Those older model ecm's are well known to be intermittent when you tap on them, etc.. when they are more than 8+ years old, or if someone never changes the crank shaft damper at the proper intervals, and vibration gets to them.

Assuming that you do not have a flaky/bad ecm for the moment, and that it simply will not communicate at all... Then you will have to remove it from the vehicle and hook it up to an official rom-boot harness, and use the button that comes with the harness to force it into rom-boot mode.

According to the cummins paperwork that came with my official harness ... You hold said button in BEFORE YOU POWER UP THE ECM.. and then power up the ecm, holding the button about 5-7 seconds longer while ecm initially powers up, then release the button and it will be in rom-boot mode.

If you simply power up the ecm first, without holding the button in before powering it up, then it will not have any effect.

- If it will not forcibly rom-boot using the proper methods, then it is simply the ecm going bad. The ROM 'Read-Only Memory' boot code itself cannot be edited once it is flashed, and is permanent... not part of any engine program that gets installed or edited.