Regen cycles
FTE Legend
Joined: Mar 2017
Posts: 31,835
Likes: 9,156
From: Western NY
Hotshot
Joined: Oct 2015
Posts: 19,693
Likes: 12,818
From: Wyoming
Regen today. Ambient temperature was 96°F to 99°F as reported by the truck. City driving at 45 MPH or less, with a few stoplights in the mix. 100% to 20% regen took 16 miles. Normally my regens go to 0% but either it really was done at 20% or I just didn't wait long enough for it to go down further. Oh, and I was towing my bumper pull toy hauler that likely weighed in at 10K.
Hotshot
Joined: Oct 2015
Posts: 19,693
Likes: 12,818
From: Wyoming
There's no way my truck is going to passively regen 80% of the DPF. I've seen a passive regen register on the gauge exactly once and that was a whopping 5%.
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Laughing Gas
Joined: Jul 2020
Posts: 973
Likes: 455
I have never seen a passive regen and I have pulled heavy trailers and towed heavy farm equipment that probably should not have been towed by a superduty.
My egt have been up in the 950s but not very long. Only thing I can figure out is Ohio is flat enough that temps are not hot enough for long enough and has enough stop and go that what happens to burn off is just replaced taking off from the next red light.
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Laughing Gas
Joined: Jul 2020
Posts: 973
Likes: 455
I am cautiously optimistic that the map sensor has fixed it. Have not really had any good runs lately but did get a long enough regen to get it down to 32 percent. Then I was able to get another 300 miles before it was full again. That was a big improvement over 23 percent to full in 200 miles.
I also noticed that the last time when it regened that it did not overshoot to 106 percent at the start either.
Also it has been climbing slower on cold starts. I would always climb 6 points or so every time I would do run after setting an hour or so.
I still have the derringer disconnected I want to give it sometime before reinstalling it.
I also noticed that the last time when it regened that it did not overshoot to 106 percent at the start either.
Also it has been climbing slower on cold starts. I would always climb 6 points or so every time I would do run after setting an hour or so.
I still have the derringer disconnected I want to give it sometime before reinstalling it.
Tuned
Joined: Jul 2021
Posts: 372
Likes: 199
From: NE Oklahoma
I see it it on a daily basis on flat expressways at 65 with 6500lbs behind me.
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Laughing Gas
Joined: Jul 2020
Posts: 973
Likes: 455
Could be but with no codes where does a guy start?
I have owned it since new and have had an idash on for last 100k
I have owned it since new and have had an idash on for last 100k
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Hotshot
Joined: Dec 2005
Posts: 10,247
Likes: 7,667
From: Chino Valley, Arizona
I quite often pull heavy and hard, while there is passive regen i am pumping enough fuel to increase the soot faster than it can passively regen. I have even had active regens abort towing heavy loads up long grades.
Tuned
Joined: Jul 2021
Posts: 372
Likes: 199
From: NE Oklahoma
The user I was quoting stated he had never seen a passive regen in 5 years a ownership. That's highly unlikely either his truck is broke which is unlikely or he just hasn't seen it which is highly possible.
The owners manual, specifically the diesel supplement even States passive regeneration does take place under the right driving conditions.
Lead Driver
Joined: May 2021
Posts: 5,819
Likes: 3,453
From: Uh oh, CA
I have never seen a passive regen and I have pulled heavy trailers and towed heavy farm equipment that probably should not have been towed by a superduty.
My egt have been up in the 950s but not very long. Only thing I can figure out is Ohio is flat enough that temps are not hot enough for long enough and has enough stop and go that what happens to burn off is just replaced taking off from the next red light.
My egt have been up in the 950s but not very long. Only thing I can figure out is Ohio is flat enough that temps are not hot enough for long enough and has enough stop and go that what happens to burn off is just replaced taking off from the next red light.
Lead Driver
Joined: Feb 2005
Posts: 7,924
Likes: 2,642
From: The Great State of Texas
I watched my DPF count down from 55% to 0 driving 70 miles with our 6000 lb camper behind us. My auto regen was turned off, so it was a passive regen. Also, when towing our camper longer distances, my DPF stays at 0 the entire time, again with my auto regen turned off. Maybe it’s heavy enough to passively regen the DPF, but not heavy enough to produce more than what the temps can passively regen away?
Cargo Master
Joined: Jan 2006
Posts: 3,009
Likes: 89
From: SE. MA
I have been driving my truck fairly mixed the last couple of weeks, some in town , some highway, a few short trips with the 5er (60 miles each way) managed to get 1437 miles before I got the regen needed message. I run B-20 or slightly higher since it’s wam out and use hotshots edt. The observations here are interesting…
FTE Legend
Joined: Mar 2017
Posts: 31,835
Likes: 9,156
From: Western NY
I have been driving my truck fairly mixed the last couple of weeks, some in town , some highway, a few short trips with the 5er (60 miles each way) managed to get 1437 miles before I got the regen needed message. I run B-20 or slightly higher since it’s wam out and use hotshots edt. The observations here are interesting…
These 20 plus trucks are amazing to me as it seems that Ford has got it right when it comes to the new strategies of higher fuel pressures, lower EGR use and higher DEF use to get these trucks to be highly efficient at going long distances without active regens saving on fuel.
IMO, unless one wants to build a high power pull truck, dyno truck or track truck, there really appears to be no reason to delete a 20 plus, barring any unsolved issues, if the truck is being used the way it was designed for.
