When should a regen occur?
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Tuned
Joined: Jul 2006
Posts: 262
Likes: 2
When should a regen occur?
Lately my truck drives like the e-brake is on. Mileage is down quite a bit (13.5 average) and the truck falls on its face if you jump on the throttle before it takes off. It is even feeling like my old 6.0 with turbo lag.
I pulled out my AutoEnginuity and noticed the soot load % sitting around 27% but the truck regens every 150 to 200 miles like everything is ok. I remember hearing that DPF regenerations happen when the soot load hits 2%. Is this true?
I pulled out my AutoEnginuity and noticed the soot load % sitting around 27% but the truck regens every 150 to 200 miles like everything is ok. I remember hearing that DPF regenerations happen when the soot load hits 2%. Is this true?
Senior User
Joined: Jul 2012
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100% isn't really "full". It can actually go up to about 300% before things start getting critical. In addition, some of the soot will burn off without an active regen if you drive it long enough at highway speeds, especially if you are pulling a load like a trailer.
Cargo Master
Joined: Nov 2005
Posts: 2,051
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From: TEXAS
The screen does flash an orange screen that tells you of the regen in progress. But, it only stays on the screen for maybe 3 seconds at the most. Ya gotta be fast and paying attention to see it. I have just under 8,000 miles on my truck and have seen the screen notice may be a handful of times.
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Senior User
Joined: Jul 2012
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I have an Edge Products CTS. With that I can monitor the soot count, soot percent, DPF pressure and a whole host of other engine parameters and readings. I can also see when a regen has started and monitor it's progress.
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Thread Starter
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Tuned
Joined: Jul 2006
Posts: 262
Likes: 2
If you interrupt the regen process enough, it will show "Drive to Clean Exhaust" and it will stay on the screen until you acknowledge it. It will then state "Regeneration Complete" in blue when done.
Best to drive when that happens and let the process finish.
Best to drive when that happens and let the process finish.
Lead Driver
Joined: Jan 2010
Posts: 6,600
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If you are outside of the truck idling, it will smell like it's burning.
By putting it in park you've canceled the regeneration but that DPF remains hot for five or more minutes.
Junior User
Joined: Aug 2012
Posts: 78
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From: Lancaster, CA
In addition to the CTS and the smell (and somewhat useless message), if you watch the instantaneous MPG you will see it drop considerably. At 60mph, mine will drop from 22mpg to 12, and stay that way for about 10-12 minutes.
Lead Driver
Joined: Jan 2010
Posts: 6,600
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Depends on if it is still at or above 2.66 gpl of soot.
If yes, then it will begin again after oil temp is past 150°F.
However, if it heated for a few minutes, chances are it dropped to the 2.50 range and in that case, it will not run an AR again until at or after 2.66.
If yes, then it will begin again after oil temp is past 150°F.
However, if it heated for a few minutes, chances are it dropped to the 2.50 range and in that case, it will not run an AR again until at or after 2.66.
Senior User
Joined: Nov 2013
Posts: 163
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From: Albany NY
Sure enough, I saw the first Exhaust cleaning message flash. I was about 1 mile from my destination (work). I was a bit early so I decided to continue driving to complete the regen but I have no idea how long I have to keep driving? So I parked the truck and let it keep running while I went inside (now I know from the previous post it cancels the regen process).
Maybe I could watch the instant fuel mileage and wait for it to return to normal?
Maybe it's just not that important if it's interrupted and just pay no attention to it? Maybe that's how it's designed and it explains why Ford only provides the flash of the screen not to make us drive differently.
Lots of maybes here
Maybe I could watch the instant fuel mileage and wait for it to return to normal?
Maybe it's just not that important if it's interrupted and just pay no attention to it? Maybe that's how it's designed and it explains why Ford only provides the flash of the screen not to make us drive differently.
Lots of maybes here