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Ok so on my 2019 6.7 I had the on screen DPF monitor enabled by the dealer 2 weeks ago. So now I am at 65% soot load. What % triggers the regen? I also read there is a passive regen and a active regen. How does the passive work? thanks For the help Jeff
In general, regen starts when the DPF % screen shows 100%. It then decrements by 5%, hopefully, but not always, down to 0%. It may be possible for an active regen to initiate prior to 100% if you reach the 500 miles since last regen threshold. But it's been suggested that the 500 mile threshold is part of the DPF % calculation. I don't know that for sure, but it wouldn't surprise me.
A passive regen happens when the exhaust system is hot enough. You have no control over that and no way to know that a passive regen happened unless you're really, really **** and spend too much time watching the DPF % screen. I've only "seen" a passive regen once, while towing my toy hauler up a mountain pass.
So apparently a passive regen happened today on the way to work which is approx 30 miles on an interstate. My DPF filter now reads 10% this am it was at 65 % so i assume it happened on the interstate while doing 70 mph. I had no idea it was even going on. thanks for the help. Jeff
So apparently a passive regen happened today on the way to work which is approx 30 miles on an interstate. My DPF filter now reads 10% this am it was at 65 % so i assume it happened on the interstate while doing 70 mph. I had no idea it was even going on. thanks for the help. Jeff
That would have been an ACTIVE regen. A passive regen might reduce the DPF % by 10% and certainly not by 55% in a 30 mile segment.
so it did a active regen at 65% while driving to work then i suppose..
That's my take. Why it would start at 65% is the question. Unless Ford changed something, passive regens don't have that much effect (55%) on my truck.
If you read your owner's manual, it will tell you an active regen may start at anytime. It could have reached the mileage threshold and the PCM commanded it to performed an active regen. There could have been some passive regen occurring and the PCM determined it was time to regen. I have had my 2015 regen at 70% and a time or two at lower percentages when towing the RV.
I have never seen the DPF% screen in the message center decrease in % during passive regeneration, only while an active regen has started. Passive regeneration can be monitored accurately with an obdII adapter and software or the idash or edge devices.
I have never seen the DPF% screen in the message center decrease in % during passive regeneration, only while an active regen has started. Passive regeneration can be monitored accurately with an obdII adapter and software or the idash or edge devices.
I have seen it go down a few times when in the mountains and towing...it doesn't decrease nearly as fast as it shows on the CTS2.
That's my take. Why it would start at 65% is the question. Unless Ford changed something, passive regens don't have that much effect (55%) on my truck.
I haven't had a soot load over 50 ish percent in a long time. Back when I used my EB more on two hills I travel to and from work, my soot load would be higher than it usually is. Plus I never drove in T/H mode and locked out the higher gears to prevent the engine from lugging which produces more soot.
Anyways, my soot loads aren't high and I usually get close to 500 miles. It's weird but I think it's different for all trucks. You have to figure fuel quality, driving habits, use and other factors affect the regen cycle. But normally it's from 430 miles to close to 500 miles for my truck.
Also 16 mile regens to 26 mile regens.
Last edited by Overkill2; Mar 6, 2020 at 08:58 AM.
Reason: Add to post
Since the OP isn't monitoring his distance since last regen (DSLR), he can't know how many miles he had traveled since his last regen when his soot % was 65. So, the OP only has part of the information needed. When I dropped my truck off at the dealership this morning for a coolant leak, I took a picture of my tablet so when I get the truck back I can know the difference between when I dropped it off and get it back. I took this pic after I shut the engine off (hence zero fuel rate) because the DSLR updates after the engine is turned off. As you can see, I am at 77.1% soot after driving 470.2 miles since my last regen. This has been a big improvement over the time that I've been running Better Diesel's FBC...another thread. I just started running Opti-Lube XL too.
Since the OP isn't monitoring his distance since last regen (DSLR), he can't know how many miles he had traveled since his last regen when his soot % was 65. So, the OP only has part of the information needed. When I dropped my truck off at the dealership this morning for a coolant leak, I took a picture of my tablet so when I get the truck back I can know the difference between when I dropped it off and get it back. I took this pic after I shut the engine off (hence zero fuel rate) because the DSLR updates after the engine is turned off. As you can see, I am at 77.1% soot after driving 470.2 miles since my last regen. This has been a big improvement over the time that I've been running Better Diesel's FBC...another thread. I just started running Opti-Lube XL too.
If you use DSLR (calculated) it will update in real time. I like to watch the blocks and miles tick up!
DPF and Regen ?
