D13 on my 2013 670 live it's own life while idle or in PTO mode. I just bought it with 418K on it, and according to Dealer the DPF was services.
It stays at about 700RPM, then would start sound like turbo is working, the turbo gauge will go up to like 5. At the DPF backet area light whistling noise appears. RPM will stay the same. Then it will go back to normal with "wif" sound and RMP will jump a bit and truck shake some. No smoke. It would do that for short periods of time but constant. Pressure stays on 45.
I have a MIL on for SPN 153 FMI 7
Maybe it's some how related.
Any help? What that's can be? DPF is trying to clean? EGR problem?