CM 871 won’t regen

[Rawze]

(12-11-2019 )theironoracle Wrote:  I completed the trouble shooting in Insite. It ends at replace harness if that doesn’t fix it replace ECM. The harness is a month out so I installed the ECM and it didn’t change. Fails the heater test every time. I did my own harness testing looking for shorts to power, ground and resistance and really don’t see anything wrong with the harness. I’m think about installing new heaters thinking they may fail when power goes to them even though they pass the ohms tests. Any info would be appreciated!!! Cummins tech support literally laughed at me when I asked for operating peramiters of the system. Thanks TIO

BTW: THAT IS NOT THE SAME ENGINE YOU POSTED ABOUT EARLIER -- THAT IS A CM2350 ENGINE, NOT A CM871 LIKE IN YOUR PREVIOUS POSTS!!!

{ When re-reading this thread, I get this strong feeling this guy has no clue how to work on modern diesel engines, and has had every bad habit in the book}

Hopefully, he has learned that you cannot just wash DPF cans with water or any other liquids, as it washes out the precious metals, - Hopefully he has now learned that these cry-babies are a delicate flower that need that torque wrench instead of that air-speed-gun when doing things ... and hopefully he is wiser for it now...

-- That troubleshooting tree in Insite is only about 30% accurate on its best days.

First thing you should do is check that the program in the engine matches exactly the truck and engine.

- I cannot quite make out the engine ser# in the photo you supplied. It is just a bit too blurry (tried like hell to make it out), but the program is EF10067.41 - Use the engine ser# and go to quickserv.com and verify that is the correct program for this engine and truck. Hopefully, the engine ser# is correct and no one swapped program or ecm or engine?. - maybe use the vin# of truck to verify?