DPF Regen Issue?
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
DPF Regen Issue?
So for the past few months when when a regen starts I get what feels like a limp home mode, or maybe a light version of it. DPF gets to 99% full, engine completely warmed up, on the highway and when I give it a little right pedal the engine stutters and knocks, no power. I get enough power to keep a constant speed, just can't accelerate. This continues until the DPF gets to 90% full, and sometimes like today until it reached 80%. Is this a normal thing?
BTW, this is a 2018 F-250, just over 10K miles, issue started earlier this spring when I was at 8-9K miles. I've always tried to continue driving once a regen starts and get it to 0%.
Thanks,
Craig
BTW, this is a 2018 F-250, just over 10K miles, issue started earlier this spring when I was at 8-9K miles. I've always tried to continue driving once a regen starts and get it to 0%.
Thanks,
Craig
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
Thanks, I figured I'd have to take it in. Thought I'd just post it just in case someone else has had the same issue.
Getting the DPF to 0% might be the curse of Forscanning in the DPF % screen...it's like a video game.
Thanks again.
Craig
Getting the DPF to 0% might be the curse of Forscanning in the DPF % screen...it's like a video game.
Thanks again.
Craig
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
I've found I get faster regens around town than on the highway. Too much heat is stripped away at highway speeds slowing the regen process. And yes, I both love and hate the DPF% screen. I taught my dealer how to activate the DPF% screen using their IDS. I've used Forscan for several other changes.
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
I've heard that, but driving around town here in Maryland sucks, I have a "regen route" that's works every time when the outside temp is above 70deg F.
Guess I'll find out how good Ford service really is. Never had to use it before in 25 years of owning new Fords.
Guess I'll find out how good Ford service really is. Never had to use it before in 25 years of owning new Fords.
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
Hmmm ... you must be near the Beltway or Baltimore. My stompin' grounds was between Hagerstown and Williamsport.
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
In between, near Ft. Meade...but there are a lot of lights and a lot more traffic than when I moved here in '02. I figure I'd trade a gallon of fuel for keeping more brake material on the pads. I basically just drive up and down route 32. I have noticed that the deceleration on the off ramps causes a 5-10% drop on the DPF. Like I said...it's a video game.
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Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
As long as you keep in drive, hold brake and don’t shift to park it will keep regeneration going. Stops soon as your in park. I showed my dealer on the IDS as well, because I hadn’t bit the bullet on buying Forscan yet.
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Fleet Mechanic
Joined: Dec 2012
Posts: 1,567
Likes: 539
From: DFW
I think there is a speed position that is part of the regen too, if you drop below avg 30 mph, the regen will stop / postpone until the computer tells it to start again.
I had a horrible issue during regen at around 17k miles and had a bad exhaust valve on #6 and it would hit hard during regen when coming up to temp, around 1000 degrees. Felt like the front of the truck was going to shake off the road - the piston action was so violent. I drove through two regens with the ford diesel tech - a really great guy, old school, and got it to duplicate both times so he could see the #6 cylinder drop off and record it on his laptop. They had to tear the engine down to the block, lift the cab off. Made me sick to my stomach. But - all under warranty and the dealer was absolutely phenomenal (Holiday Ford in Whitesboro TX). Haven’t had a single issue since. 52k miles now. I’ll post a pic or two.
I had a horrible issue during regen at around 17k miles and had a bad exhaust valve on #6 and it would hit hard during regen when coming up to temp, around 1000 degrees. Felt like the front of the truck was going to shake off the road - the piston action was so violent. I drove through two regens with the ford diesel tech - a really great guy, old school, and got it to duplicate both times so he could see the #6 cylinder drop off and record it on his laptop. They had to tear the engine down to the block, lift the cab off. Made me sick to my stomach. But - all under warranty and the dealer was absolutely phenomenal (Holiday Ford in Whitesboro TX). Haven’t had a single issue since. 52k miles now. I’ll post a pic or two.
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
I think there is a speed position that is part of the regen too, if you drop below avg 30 mph, the regen will stop / postpone until the computer tells it to start again.
I had a horrible issue during regen at around 17k miles and had a bad exhaust valve on #6 and it would hit hard during regen when coming up to temp, around 1000 degrees. Felt like the front of the truck was going to shake off the road - the piston action was so violent. I drove through two regens with the ford diesel tech - a really great guy, old school, and got it to duplicate both times so he could see the #6 cylinder drop off and record it on his laptop. They had to tear the engine down to the block, lift the cab off. Made me sick to my stomach. But - all under warranty and the dealer was absolutely phenomenal (Holiday Ford in Whitesboro TX). Haven’t had a single issue since. 52k miles now. I’ll post a pic or two.
I had a horrible issue during regen at around 17k miles and had a bad exhaust valve on #6 and it would hit hard during regen when coming up to temp, around 1000 degrees. Felt like the front of the truck was going to shake off the road - the piston action was so violent. I drove through two regens with the ford diesel tech - a really great guy, old school, and got it to duplicate both times so he could see the #6 cylinder drop off and record it on his laptop. They had to tear the engine down to the block, lift the cab off. Made me sick to my stomach. But - all under warranty and the dealer was absolutely phenomenal (Holiday Ford in Whitesboro TX). Haven’t had a single issue since. 52k miles now. I’ll post a pic or two.
Oh, and thanks all for the information.
Craig
Fleet Mechanic
Joined: Dec 2012
Posts: 1,567
Likes: 539
From: DFW
The tech had the cab off in 28 minutes. It is routine now - for 150’s too. Hard to believe but, motor work is a breeze with the radiator, fenders, and firewall out of the way. It was in the shop for 21 days and I did get a 75k ESP out of them, at no charge. The local shop wouldn’t give me the time of day and wouldn’t even try to replicate the problem. When I took it back to Holiday, the tech was willing to drive with me until the we found the issue. 2 regens and 580 miles later, he had all of the data he needed. They replaced exhaust guides and valves on the bad cylinder which ended up being no 6.
I hate when a regen comes around...alittle gun-shy I guess...not one repeat since it was in the shop.
I hate when a regen comes around...alittle gun-shy I guess...not one repeat since it was in the shop.
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
Thanks...I'll be taking it back to the dealer I bought the truck from, family owned place...hopefully they'll want to work on it. I'd hate to take a day off of work just to have them tell me they can't or won't replicate the issue. I'll have to plan out getting the DPF to 90% for that day.
One worry is they won't have a loaner or pay for a rental.
One worry is they won't have a loaner or pay for a rental.
Thread Starter
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Cross-Country
Joined: Apr 2018
Posts: 72
Likes: 11
Dropped it off at the dealer (Academy Ford) on Monday morning. It was the earliest I could get a loaner, 2019 Escape, I've driven golf carts w/more giddy up than this thing.
Anyway, yesterday they did all the things Ford says to do, update all modules. They read off the list to me, there were 5 or 6 updates, DPF system was on there. They didn't try and drive it during a regen, they needed my permission for the service boss to take it home.
Get a call today that they did in fact feel what I described during a regen, good news I guess. They called Ford and asked what they thought, Ford told them to tell me to try a different brand of fuel...even they laughed at that one. I told them about what I learned in this thread, and they said that is a possibility.
I was told I could come get the truck and drive it until Ford figures out what is going on as they will have an open service ticket on it. I said keep it thru the weekend so I won't have to drop it off again and hope for a loaner.
That's the latest. I did ask if they had any other loaner that is bigger than an Escape, they said all they have other than that is a Focus.
Anyway, yesterday they did all the things Ford says to do, update all modules. They read off the list to me, there were 5 or 6 updates, DPF system was on there. They didn't try and drive it during a regen, they needed my permission for the service boss to take it home.
Get a call today that they did in fact feel what I described during a regen, good news I guess. They called Ford and asked what they thought, Ford told them to tell me to try a different brand of fuel...even they laughed at that one. I told them about what I learned in this thread, and they said that is a possibility.
I was told I could come get the truck and drive it until Ford figures out what is going on as they will have an open service ticket on it. I said keep it thru the weekend so I won't have to drop it off again and hope for a loaner.
That's the latest. I did ask if they had any other loaner that is bigger than an Escape, they said all they have other than that is a Focus.
Hotshot
Joined: Oct 2015
Posts: 19,711
Likes: 12,853
From: Wyoming
What you describe almost sounds like the jackhammering that the pre-2017 6.7L trucks were encountering. The regen was pumping fuel through only one bank. The fix was that the reprogrammed it to pump fuel into both banks. Look up the "Jackhammer" thread in the 6.7L subforum.
My regen is seamless. If I'm not watching the DPF % screen, I have no idea that it's happening.
My regen is seamless. If I'm not watching the DPF % screen, I have no idea that it's happening.