CM871 code 2973

[Valley11]

(02-21-2020 )Rawze Wrote:  Just about everyone who comes on this forum, all swears by their "reputable guy", almost always learns the hard way that their program has some sort of serious issues that may or may not show up right away. Most of the delete programs that people make, copy, steal off others, buy/sell, etc... then shove into other people's engines will shorten the hell out of the life it as well.

Pull a copy of the program out of the ecm and e-mail it to me for an inspection of safety and stability. -- AT LEAST eliminate the questionability of it if you actually value your engine and its longevity/stability.

I would begin by doing this first and foremost, because for all you know, it could be jumping operating modes unpredictably for some reason or another.

As far as programming is concerned,.. if it has been 3+ years since it was done, even if it has the best programming on the planet in it,.. It is well past due/ in dire need for some updates that have to do directly with power boost, etc. to correct some issues that are well known on the 871's.

ALSO, when is the last time you replaced the IMAP, exhaust gas pressure, and other important engine sensors?

What mods, things have been done to it mechanically?

Does the engine still have its factory VG turbo?

Has the crank case filter been drilled out? -- or are you using the cummins maint.free one?
ref: http://rawze.com/forums/showthread.php?t...376#pid376

Are the exhaust cans (DOC and DPF) 100% hollow? - Exhaust as open as possible? -- or something else?

IMAP sensor was replaced 2 years ago and put new one in again 2 days ago. Exhaust gas pressure sensor changed last year. Not sure what other sensors I should be replacing. Was going to replace barometric pressure sensor trying to locate it and from what I can find looks like it might be zip tied to wiring harness under the ECU.

It still has factory VG turbo passed calibration today.

Be honest I haven’t taken the crankcase filter out to look. I will check it tomorrow. Just came across today that could not monitor it and found it was disable and can’t find how to enable it or if the program removed it.

The cans were not 100% hollowed I fixed that last night they are all clean now. There is blocker plate on intake after egr and one before egr cooler. All parts are still in place.