Does not regen when heavy towing
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Does not regen when heavy towing
2015 F350 long bed CC and a 12,000 lb fifth wheel. Have had to drop trailer 2 times now and drive for 30 to 50 miles to complete a regen. Have gotten the "have filter serviced" screen and this is the way a Ford Diesel Tech told us to get a regen to occur. Our last trip we picked up our trailer with the screen showing 40% full. Made it the 60 miles to our destination and screen showed 100%. Next day I went on a grocery run and when the truck was started screen showed 75%. It hit 100% just as we pulled into park after a 30 mile drive. Started regen within about 5 miles on the way back and went down to the customary 25%. Really wondering how many times we will have to drop the trailer and drive to make the 180 mile trip home.
Any ideas on what may be going on? Stock truck, no tune, 125000 miles.
Any ideas on what may be going on? Stock truck, no tune, 125000 miles.
More Turbo
Joined: Dec 2018
Posts: 535
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From: Arkansas
sounds to me like a sensor is either not working properly, or something is going on with your injection system. Mine pretty much passively regens while towing. If mine does go into a regen while towing it has 0 problem completing the process, but usually that's only due to the ford 500 mile mandated regen. Is it throwing any codes?
Tuned
Joined: Jun 2019
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A passive regen should happen a lot faster and easier while towing as well, due to the additional heat created from the engine working harder. It sounds like it worked perfectly at the end of your post. If you're doing start and stop driving, you won't see a whole lot of passive regen. Your '15 will only go into an active regen once the filter hits 100%, or if you haven't had an active regen in the last 500 miles. Has your filter hit 100% while towing and not gone into an active regen? Assuming of course that you kept driving on driving.
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A passive regen should happen a lot faster and easier while towing as well, due to the additional heat created from the engine working harder. It sounds like it worked perfectly at the end of your post. If you're doing start and stop driving, you won't see a whole lot of passive regen. Your '15 will only go into an active regen once the filter hits 100%, or if you haven't had an active regen in the last 500 miles. Has your filter hit 100% while towing and not gone into an active regen? Assuming of course that you kept driving on driving.
Filter hits 100% and get notice regen starting. For some reason it does not continue regen, filter stays at 100% and get the service filter notification 10 to 20 minutes later. All occurs while driving, no start stop driving and only when towing.
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sounds to me like a sensor is either not working properly, or something is going on with your injection system. Mine pretty much passively regens while towing. If mine does go into a regen while towing it has 0 problem completing the process, but usually that's only due to the ford 500 mile mandated regen. Is it throwing any codes?
Posting Guru
Joined: Oct 2013
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From: NC
This should not be happening, you have something wrong. The "service filter notification" is a clue, as that is a system fault and not a normal display.
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Well, the trip home today I did as one poster had suggested. We took paved back roads and kept it about 55-60 mph. Locked it at 5th gear and enjoyed the drive. Took us about 45 minutes longer (185 miles). The good news is we started at 30% and was at 55% when we got home. All worked as expected today. Still doesn't explain why it is inconsistent. Still no codes and is due for an oil change soon so I will have a discussion with the diesel tech.
Thanks for all the suggestions and advice. Love the towing power of the truck, just not a real big fan of the diesel's additional cost of operation and maintenance.
Tom
Thanks for all the suggestions and advice. Love the towing power of the truck, just not a real big fan of the diesel's additional cost of operation and maintenance.
Tom
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Logistics Pro
Joined: Nov 2001
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From: Georgia
Was it very hot the day you had that happen, My trucks a 14 and I had almost the same experience out in Cody WY. Towed up from Billings (17K LB m/L) and it was very hot, I seem to recall that when I looked into it the trucks were prone to fill up in hot weather at altitude, I got the DRIVE TO CLEAN message and filter was at 100 percent for a long time (as measured by the Edge). It finally started cleaning after about 20 miles of level driving. cleared up and hasn't done it again.
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From: Frederick, MD
I have never had this happen on my '13. Have towing in 111F temps in and lots of mountain passes. My filter always stays a zero when towing and seldom regens at around 2K miles.
I think this is a sensor issue.
What kind of air filter are you using and has been replaced/checked?
I think this is a sensor issue.
What kind of air filter are you using and has been replaced/checked?
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Was it very hot the day you had that happen, My trucks a 14 and I had almost the same experience out in Cody WY. Towed up from Billings (17K LB m/L) and it was very hot, I seem to recall that when I looked into it the trucks were prone to fill up in hot weather at altitude, I got the DRIVE TO CLEAN message and filter was at 100 percent for a long time (as measured by the Edge). It finally started cleaning after about 20 miles of level driving. cleared up and hasn't done it again.
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First time north of Fallon, NV around 3800', this last time about 1200' across MN. Both times towing the same trailer loaded the same way, around 12,000lbs and running 60 to 65 MPH. The humidity was significantly different. NV about 15% and MN about 75%.
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I have never had this happen on my '13. Have towing in 111F temps in and lots of mountain passes. My filter always stays a zero when towing and seldom regens at around 2K miles.
I think this is a sensor issue.
What kind of air filter are you using and has been replaced/checked?
I think this is a sensor issue.
What kind of air filter are you using and has been replaced/checked?
Should be a Ford filter as they my dealer has been doing all the service, I don't recall when it was last changed. I bought the truck at 93,000 miles and now have 125,000, will have them check at the next (soon to be) oil change.
Cargo Master
Joined: Feb 2015
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From: Livermore Ca.
This is the reason I don't have the %age screen activated. If you don't see a CEL than things are fine. I know guys like to see how full the filter is and I get it but then you have something to be concerned about when there isn't anything to worry about. I wish I could get the oil %age instead. I also tow a 13,000 lb trailer and my truck seems to do regular regen's.just fine I just let the truck do it's thing. I also have a 15
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This is the reason I don't have the %age screen activated. If you don't see a CEL than things are fine. I know guys like to see how full the filter is and I get it but then you have something to be concerned about when there isn't anything to worry about. I wish I could get the oil %age instead. I also tow a 13,000 lb trailer and my truck seems to do regular regen's.just fine I just let the truck do it's thing. I also have a 15
Would have been a bit more concerning, to me, when the "drive to clean" would show up on the dash while in the middle of a 300 mile drive. Then 20 minutes later "service DPF now" warning comes up. Was still worried, but was able to see when the regen did start, after we dropped the trailer and drove. I think something is wrong and being intermittent, I hope the dealer can figure it out. 20,000+ miles of towing before this started and the truck did just fine. Something changed.