New to regen - Light is on this morning.

The ISX 15 I will give kudos to. You can idle at 600 RPM, it will automatically regen. You will be sitting there, no lights, no nothing. The RPM's raise to 800 RPM, you hear the turbo spooling up, then watch as the coolant temperature rises, the smell of burning soot fills the air outside of the truck.

During a passive regen, once you get off the highway the RPM's will be at 800 RPM and it will finish while driving, or while parked. I'm kinda baffled that with today's technology Detroit Diesel would have a light come on to do an active regen. Sound's like something is wrong with it. I wouldn't expect this on an SCR 2010+ engine.

 

I agree. Idle is never good for a motor. Low mileage trips and lots of Idle could bring up your soot level. We were having problems more than other companies with 2010-2012 because we run light I think.

 

Just a 50-100 mile drive over a day should EASILY take care of that. When you need a regen, it's typically from sitting a long time at a low idle. Your truck is designed specifically for using the trucks engine speed to heat your exhaust to clear out the filter. When you're at a low idle, that doesn't work, so you start clogging up, and then you need to regen. It has nothing at all to do with how new the truck is, or how great of condition it's in, it's all in how much idle time you've had since the last time you actually drove it.

The reason it came up is because you clearly spent a ton of time just idling. Most cascadias don't need to stay at a steady idle all night. Learn to use that little box in your sleeper if you have one. It'll start the truck and turn it off for you. Using that, you should typically be able to sit for a full 1-2 days without needing a regen.

 

Had a new DPF filter put in in April 2012. I asked the guy how to maintain it so it lasts as long as possible. He said ever day at the end of the shift, the engine is still hot from driving. Use the Park Regen button (of course with all the procedures like headlights on, A/C on, Jake and Cruise off, and Fan ON) If it does not idle up it does not need a parked regen. If it does idle up, just let it run its routine to cook out the soot.

That was the critical piece of info I hadn't known before and spent thousands of dollars in various shops every time the check engine light came on and they would just clear it and regen it and send me on my way after taking my money.

 

My DPF light starting flashing so I pulled off and started a parked regen. Manual says it will take 20-30 minutes to complete. When it's done will it idle down on its own? I'm 20 minutes into it and the light stopped flashing and is just on now. Thanks.

 

Rockstar, engine speed doesnt heat the exhaust. Lots of burnt fuel does. The op already stated he runs short in a fairly flat state and idles when hes doing an overnight. Perfect conditions to create soot and not be able to burn it off. My own Cassie never does an active regen, it doesnt need to. I yank a heavy reefer coast to coast. Wanna see a hot exhaust that would be any loaded truck that climbs Tehachapi Pass going east. 1300 rpm in 6th with 40+ boost will do the job.