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  #1  
Old 09-28-2014, 11:02 PM
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how does dealer fix DPF 100% full ??

Do they force a regen or do they have to remove it and clean it?

dash message says filter is 100% full. It's in limp mode - it wont shift out of third gear. Actually it's stuck in third, it pulls away from a stop in third gear, it doesn't go through first and second gears first. Is that how limp mode is supposed to work??

I'm going to see if I can limp it - pun intented - to the dealer in third at 25 mph...uggg!!

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Old 09-29-2014, 01:31 AM
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Re: how does dealer fix DPF 100% full ??

Yup. Others have said limp mode is 3rd only. Take it easy and go see the dealer. They use the WiTech diagnostic terminal to force a stationary regen. I wish there was a button on the dash for that!

Word to the wise: try to drive on the open highway for 20 minutes at least once every 150 miles or sooner. That should allow it to stay cleaned out...and if the EVIC says 80% full, drive now...don't put it off!
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Old 09-29-2014, 05:58 PM
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Re: how does dealer fix DPF 100% full ??

Shoestring, did you happen to have the computer reflash done for false engine codes before your dpf trouble?
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Old 09-29-2014, 10:18 PM
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Re: how does dealer fix DPF 100% full ??

Thanks for that info Excursion!

No Goon, it hasn't had any updates since I got it last November..

Actually this all started after I left it running perfectly at a body shop for repairs because a fallen tree branch took out my windshield and dented the hood and fender. So when it was ready the shop called and said: oh we got some diesel filter message and check engine light. So I said oh I think it may just need a run down the highway when I pick it up. Nope, it was in limp mode when I picked it up. I called them right away and was like what the heck did you guys do to this thing?! Who the heck knows what they did to cause that. Maybe it was just a coincidence but I think it was from them. I've never had any DPF or any related messages in 13K miles. It also had a message about service electronic throttle control. I had pics of my odometer and trip meter before dropping it off. They drove it 4.4 miles. I know they had the battery disconnected but that shouldn't do any of this...as far as I know

I'll be limping over to the dealer this week. Guess I'll be getting all sorts of computer updates there..
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Old 09-29-2014, 10:33 PM
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Re: how does dealer fix DPF 100% full ??

Thats strange....maybe they let it idle an excessive amount? That'll do it. Its hard to do anything else wrong in 5 miles. Or....maybe that tree knocked all the soot loose in the motor and plugged up the DPF!!!
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Old 09-29-2014, 10:40 PM
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Re: how does dealer fix DPF 100% full ??

Haha

I figured the employees were so impressed with how cool it is they let it idle a lot just to enjoy it
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Old 09-30-2014, 07:10 AM
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Re: how does dealer fix DPF 100% full ??

Quote:
Originally Posted by ExcursionDiesel View Post
Yup. Others have said limp mode is 3rd only. Take it easy and go see the dealer. They use the WiTech diagnostic terminal to force a stationary regen. I wish there was a button on the dash for that!

Word to the wise: try to drive on the open highway for 20 minutes at least once every 150 miles or sooner. That should allow it to stay cleaned out...and if the EVIC says 80% full, drive now...don't put it off!

I see in the EVIC in the dash where to see the DEF level but where do you see the DPF/filter status? I tried all the screens including the left/right on the ones that have more than one circle on the bottom...see trans temp, oil temp, DEF status, trip a, trip b, etc, etc, etc. but no DPF/filter status...how do you know its at 80%?
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Old 09-30-2014, 07:17 AM
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Re: how does dealer fix DPF 100% full ??

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Originally Posted by ljn21 View Post
I see in the EVIC in the dash where to see the DEF level but where do you see the DPF/filter status? I tried all the screens including the left/right on the ones that have more than one circle on the bottom...see trans temp, oil temp, DEF status, trip a, trip b, etc, etc, etc. but no DPF/filter status...how do you know its at 80%?
You won't see a gauge that tells you DPF Filter status. It will only show up as a message if it gets 80% or 100% full (warning rather than gauge). I had one DPF continue driving at highway speeds for X # of miles and I aborted my trip home and went to get some coffee. Never saw it again but I tow about 1x a month and push it hard. Lot's of idling / short trips / slow lugging speeds will lead to this issue - as the engine needs to be pushed hard for long periods from time to time to clean out the DPF.
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Old 09-30-2014, 07:30 AM
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Re: how does dealer fix DPF 100% full ??

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Originally Posted by jaje View Post
You won't see a gauge that tells you DPF Filter status. It will only show up as a message if it gets 80% or 100% full (warning rather than gauge). I had one DPF continue driving at highway speeds for X # of miles and I aborted my trip home and went to get some coffee. Never saw it again but I tow about 1x a month and push it hard. Lot's of idling / short trips / slow lugging speeds will lead to this issue - as the engine needs to be pushed hard for long periods from time to time to clean out the DPF.

Got it, thanks, thought I was going crazy lol. I do keep my eye on the DEF gauge although I would prefer that instead of just the bar with quarter graduations that it showed the actual % but I guess thats being picky. I purchased DEF from the local dealer in 2.5 gallon jugs and there isn't really a way when pouring the fluid in to see how full it is so trying to estimate from the current guage is a little tough. I do my guage moving down after I filled it so it must be running the regen cycle periodically on my way to work, my commute must be right on the edge for enough miles/time for it to run b/c its only about 28 miles one way with a few stop ligths along the way but mostly 55mph for 20 miles then 7 miles at 70mph and 1 mile at 40mph.
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Old 09-30-2014, 10:37 AM
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Re: how does dealer fix DPF 100% full ??

Quote:
Originally Posted by ljn21 View Post
Got it, thanks, thought I was going crazy lol. I do keep my eye on the DEF gauge although I would prefer that instead of just the bar with quarter graduations that it showed the actual % but I guess thats being picky. I purchased DEF from the local dealer in 2.5 gallon jugs and there isn't really a way when pouring the fluid in to see how full it is so trying to estimate from the current guage is a little tough. I do my guage moving down after I filled it so it must be running the regen cycle periodically on my way to work, my commute must be right on the edge for enough miles/time for it to run b/c its only about 28 miles one way with a few stop ligths along the way but mostly 55mph for 20 miles then 7 miles at 70mph and 1 mile at 40mph.
Your regen should be fine with that commute. Avoid idling for extended periods (a couple minutes is okay). I recommend that you do not fill the DEF tank in the summer. Run off the lower half so that you can add DEF occasionally to refresh the DEF in the tank that has been getting hot. I add a gallon at a time.
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Old 09-30-2014, 11:36 AM
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Re: how does dealer fix DPF 100% full ??

Quote:
Originally Posted by ljn21 View Post
I do my guage moving down after I filled it so it must be running the regen cycle periodically on my way to work
Regens and DEF have nothing to do with each other. Regens occur when the PCM notices a specific maximum difference in back pressure around the DPF. DEF is continuously injected into the exhaust stream and the dosing amount is changed based on the NOx/O2 sensor readings downstream the CAT.
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Old 09-30-2014, 12:14 PM
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Re: how does dealer fix DPF 100% full ??

Quote:
Originally Posted by ljn21 View Post
I do my guage moving down after I filled it so it must be running the regen cycle periodically on my way to work, my commute must be right on the edge for enough miles/time for it to run b/c its only about 28 miles one way with a few stop ligths along the way but mostly 55mph for 20 miles then 7 miles at 70mph and 1 mile at 40mph.
The DPF and DEF are unrelated. DEF usage is part of the SCR (Catalytic Converter) and isn't part of the DPF and its regeneration process. SCR is happening all the time and DPF regeneration occurs as needed based on back pressure sensors. If you are driving 20 miles above 50 mph routinely, your vehicle will regen often enough to never see a message.
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