Excessive Regen (non stop)

[BrandonOlsen]

(11-19-2022 )Rawze Wrote:  first of all.. if the 'regen required' light is coming on then the system is already in dire straights.. and the engine is the issue. It is Not the DPF system, as it only catches the soot.. it does not make it. You are not going to cure it much by doing a parked regen. A parked or forced regen does not "clean it out completely" and is only going to only clean it by about 2% at best. Parked and forced regens are nothing but a band-aide that only allow you a few hundred more miles once it starts asking for them regularly. The system is done-for and needs some serious servicing at that point.


What need to happen at this point is that the DPF and DOC both need to be removed, pictures taken of their faces, and then taken to a stealers$it to have them baked, de-ashed, then flow tested. Once that is done, and they are put back on, then in Insite, a 'Maintenence reset' and 'DPF Replacement' procedures need to be done to let the ecm know that they were cleaned out.

NEXT would be to FIX THE ENGINE ISSUES that caused the situation to begin with. Doing a thorough EGR tune-up, replacing the egr and intake sensorsthat are more than a couple years old like the IMAP, Delta-P, etc.. and cleaning out all the egr piping.
ref: http://rawze.com/forums/showthread.php?t...122#pid122

... AND fixing the turbo leaks and CAC leaks that the engine, intake, and exhaust may have.

Only after that will the emissions systems become somewhat reliable again. There are no band-aide shortcuts to making the engine healthy again.. it only leads to more headaches and chasing your tail endlessly... and no shop is going to do any of this stuffs for you.. the simply either don;t care.. or are too damn dumb to service the engine properly, only chasing the more expensive components instead.

last but not least... if the fuel pump has more than 400k miles of run time on it (or 8,000 hours).. then it needs all new guts to prevent catastrophic engine damage.. and as well.. you need to do a rail leak-down test to ensure you don't have any fuel rail issues or leaky injectors.
ref: http://rawze.com/forums/showthread.php?t...2#pid69262

Thanks for the response rawze. The regen required light does not come on. Nor have I had to do a forced regen. Whenever it has ever done a regen it’s always when I’ve been driving and you could only tell it was doing a regen is when you came up to a stop sign and got under 1000 rpm and the hot exhaust light came on and you could smell it. It’s doing the same thing as that where it seems like it’s a regen but the hot exhaust light isn’t coming on and the smell isn’t there ( atleast I don’t think ) I have a bad nose from COVID so smelling things are hard. Truck has 660,000 miles . Was overhauled at 600,000 fuel pump was replaced at that time of over haul