I've been working on a 2013 crane that has an ISX12 power plant in it and have been having a lot of issues trying to figure out what could finally fix the issues that it has been having..
Before going in to detail, when we got this crane back from a shop (after being gone for a year), I was advised to start working on it. It has been deleted and apparently has always ran rough since we got this into our fleet, but I started after it had been sent to a shop to repair the transmission.
In any case, I'm not sure what was done during the deletion process and/or where the tune came from. My employer was able to get an outfit from Canada to remote in and re-tune it.
The codes that it is giving frequently are:
1943: Ambient air density. Valid data, but below normal operation range;
2346: Inlet exhaust gases temperature in the turbocharger (calculated);
2322: Camshaft signal fault
Now, a coworker of mine has went through and changed almost every single sensor the is engine related. I would say it could be wiring or a connection at the ECM, but I want to try to rule everything else out before I tear into it too much, being as I would have to remove a substantial amount of things to get to said ECM. A few coworkers think it may be a can-bus issue, but I'm not getting and can-bus codes or issues with a change in ohms on the can low or high sides.
Just curious, has anyone else ever ran into this issue with a tune, and/or with a deleted cummins before? The operator claims that it will run great most times in the morning, but after he leaves a jobsite it will run like garbage for the rest of the day, whereas there are some days it just runs badly or runs great all day. I am going to test the CAC system for leaks, Friday and see if I can locate an issue there.
Any insight that anyone has would be greatly appreciated.
Have a good Thanksgiving everyone!