hemsteadc Posted November 25, 2020 Report Share Posted November 25, 2020 (edited) Once again I'm having regeneration problems on my 2008 Cummins 8.3. I don't know if this is "normal", or if I really do have an issue. 3 years ago the DPF plugged up to the point of derating, at 100k miles, and I had it replaced at considerable cost. The truck has run fine since then, but, after a couple of hours of city driving yesterday which couldn't be avoided, I arrived home to hear that dreaded groaning engine sound and the DPF full light came on. I tried to start a manual regen, but I'm not sure I pressed the switch correctly as I later saw it has a little slider tab and a down arrow on it. I did not notice that. Now, I'm hoping I can simply hook up and start towing to make this problem go away. There's no freeway near me so I cannot drive at high speed. I may be able to get the manual regen to work later if I press the switch correctly, but that requires a warm engine and I'm not taking that chance right now. Sooo... can I assume this truck is regenerating properly when driving as it's been fine for years until yesterday? Can a truck shop make this thing regen if I can't? (I talked to Sportchassis yesterday but this person wasn't much help) Thanks Edited November 25, 2020 by hemsteadc Quote Link to comment Share on other sites More sharing options...
ms60ocb Posted November 26, 2020 Report Share Posted November 26, 2020 I don't know that much about forced Regen but been around a few. First put the engine to a fast idle, after the engine warmup the regen should work if allowed. I had a Ford 6.7 that had frequent auto regens and you knew it happened. I have a 2015 Sports Chassis 8.9 Cummins. I only know if I'm in a regen if I'm stopping and the engine goes to an idle. I get a hot exhaust warning, nothing else. I don't have the DPF but have a catalyst which operates somewhat the same. Call a Cummins engine dealer/service shop, Have your engine number available, they should be able to help you. Clay with the truck basically parked the the Covid-19 and other health problems. Quote Clay & Marcie Too old to play in the snow Diesel pusher and previously 2 FW and small Class C Link to comment Share on other sites More sharing options...
hemsteadc Posted November 26, 2020 Author Report Share Posted November 26, 2020 I did call my mechanic who told me to hitch up and drive 3 hours. I was hoping somebody had experience with this weird little switch that has a pull-down tab on it. Quote Link to comment Share on other sites More sharing options...
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