Regen question how long

Reply Subscribe

Thread Tools

Search this Thread

Sep 3, 2020 | 07:53 AM

hdman6

Thread Starter

More Turbo

Joined: Dec 2004

Posts: 527

Likes: 6

From: Jamestown Tn

Regen question how long

I have a 2019 6.7. I had the dealer activate the DPF monitor on my dash so I can see when I'm close to full on the DPF. So today on my way to work I hit 100% full on the DPF screen. It started to regen while on the interstate as usual. When i arrived at work it was at 40% so i let it idle thinking it would stop in 2 mins or so at idle. SO i waited and watched it go down to 15% and took 12 minutes . I did hear the idle change when it went to 15% , I assume the motor was dumping more fuel into the engine to continue the regen. When I heard the slight idle change I figured it was done and went back to normal. Sure enough 5 mins went by and still at 15 % . So now my question is does anyone know what and how long this goes on after you stop and put it in park if the truck is doing a regen? I thought it stopped after 2 mins in park but after today I see that's not true. thanks Jeff

Sep 3, 2020 | 08:31 AM

djousma

Logistics Pro

Joined: Mar 2005

Posts: 3,549

Likes: 2,510

From: West Michigan

Regens at highway speeds can take upwards of 10-15 minutes. you should know that the programming is such that if you shift into park, it will quit regen mode. what you saw was probably just the residual heat continuing to burn off the soot. I wouldnt worry too much about the regen process *unless* most of your driving is short trips without any or much highway driving.

EDIT: i see you have a 2019. maybe programming changed. In 2011-2016 i know that the regen stops in park or if not moving much in traffic to keep the heat up.

Sep 3, 2020 | 08:46 AM

Overkill2

FTE Legend

Joined: Mar 2017

Posts: 31,962

Likes: 9,194

From: Western NY

What kind of driving is that 10 minute trip?

I'm not comparing mine with yours but I have pulled into work or a destination before with the truck in active regen mode. I've left it in drive to see EGT4 stay hot enough to watch the soot load percentage drop on my iDash. Once in park it takes about 15 seconds or so to have it turn off. I also let it idle for a few minutes to allow EGT1 to get down to at least 400 degrees and to allow the extra fuel injected into the right bank for the active regen to leave the combustion chamber as to not make it into my oil.

Sep 3, 2020 | 09:08 AM

hdman6

Thread Starter

More Turbo

Joined: Dec 2004

Posts: 527

Likes: 6

From: Jamestown Tn

My truck would normally take about 25 mins /20 miles to go from 100% to 0% this time it started halfway to work so i thought i would watch it. The residual heat burning the remaining soot makes sense to me for the 12 mins i waited. thanks Jeff

Sep 3, 2020 | 07:58 PM

Trang64

Senior User

Joined: Jun 2020

Posts: 133

Likes: 3

Is that an 8" cluster option only or can it be done on the 4"?

Sep 3, 2020 | 08:27 PM

senix

Super Moderator

Joined: Aug 2008

Posts: 37,384

Likes: 1,868

From: Frederick, MD

my 2013 would take 6 miles to complete regardless of interstate or 2 lane hwy speed.

My new 2020 is unknown yet. I think 10 miles but I was not able to catch it properly.

Sep 3, 2020 | 09:26 PM

mtnguy

More Turbo

Joined: Apr 2017

Posts: 736

Likes: 225

I haven’t recorded exact times on my regens, but I think some have taken 35 minutes or so when I am not pulling hard.

Agree with others on the 2017+ trucks, I think the regen stops when put in park.