2022 pete 389 with Cummins X 15 High Idle

W900Bfc · Sep 19, 2023

Did they fix the problem?? I'm having the same issue with my 2021 W900

W900Bfc · Sep 19, 2023

towtrucker said: ↑

Update,
I took the truck back to the dealer, this time the high idle issue was present.
Truck has been at the dealer for a week and this is what they have come up with,
1, new DPF filter
2, all 6 injectors replaced
3, overhead done, check exhaust valve clearances
4, check for any air in fuel system ( none found)
The theory is that there is unburned fuel getting to the filter. This is increasing the temp of the exhaust and clogging the filter and causing the truck to go into a soot burning mode. This is new for 22 apparently and what they think was going on.
So, now we have parked regen, driving regen, and soot burning mode. From what I can see, the only difference between regen while driving and soot burning is no high exhaust temp indicator with soot burning. Should have the truck back tonight or tomorrow. I'll update in a week or so and see if we are good to go. Thanks to thise who responded.
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Did they fix the problem??? I'm having the same issue with my 2021 W900

MR123 · Feb 24, 2024

towtrucker said: ↑

Hopefully someone has dealt with this issue and can let me know what got it resolved. The best way I can describe the issue is that the truck is doing ghost regens while driving. You will come off the higheay bring the truck to a stop, the idle will be at 800rpm the tourge is usually around 19% and the boost is at 5 lbs. Same numbers when it's doing an actual regen. There are 3 things different from this vs a regular regen.
1 the high temp exhaust light does not come on
2 it will do this before the truck has warmed up.
3 none of these are being recorded by the ecm as REGENS.
The issue will continue until I get a long ,heavy load. It will usually stop after the first day and then it's good till a day or two after the trip. Then the whole thing starts again. The truck has been to Pete, and Cummins but both times it was not acting up. They did a complete download of the ECM and said they could not find any issues and that the REGENs were about every 100 to 150 hrs. Truck has 160,000 miles currently problem startted about a year ago. Also it has the new digital dash and " smart " switches. I've had a bunch of issues with the switches not working and having to be reprogrammed so my suspicion is the regen switch may be the problem but I have no way to prove it. It has been reprogrammed twice since this issue started with no change in the problem either time. Any help would be Greatly appreciated. Thanks
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MR123 · Feb 24, 2024

I'm having same issue 2023 T880. 87k been going on 8 months now. Sounds like you've gotten more answers than I have. Only took 9 times at the local dealer for them to tell me the regen history looks perfect. Glad I'm not the only one experiencing this.

Concorde · Feb 24, 2024

MR123 said: ↑

I'm having same issue 2023 T880. 87k been going on 8 months now. Sounds like you've gotten more answers than I have. Only took 9 times at the local dealer for them to tell me the regen history looks perfect. Glad I'm not the only one experiencing this.
Click to expand...

Passive regens that last about 15 minutes are normal. These new trucks don’t like to be idled for long and will regen every 2-3 hours if you do.
Full on regens last about an hour and won’t happen very often unless you idle the crap out of it.

If this reply doesn’t solve your question then please reply in detail what it is doing.

fwiw the OP finally got his problem resolved..just have to go back and look at his last reply.

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