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This morning I drove 50 miles and got 19 mpg. When I went home my mpg was 14 mpg (conditions and road was the same). I then went somewhere else and was averaging back at around 19. My truck has been doing this for a while now. I have noticed that when it gets the really bad mileage I can hear a rapid clicking noise outside the truck. Is this something to do with the cleaning of the filters with the DEF or something? Anyone have any ideas? I am new to this and am still learning. I really appreciate it guys!
When your truck performs the regeneration process (essentially cleaning out the DPF) it injects additional fuel which lowers your mileage for that period of time. You may smell a "hot" smell and/or hear ticking and clicking as the exhaust gets extremely hot.
When your truck performs the regeneration process (essentially cleaning out the DPF) it injects additional fuel which lowers your mileage for that period of time. You may smell a "hot" smell and/or hear ticking and clicking as the exhaust gets extremely hot.
thats what I thought was going on. How often does this process happen and how long should it normally last?
thats what I thought was going on. How often does this process happen and how long should it normally last?
Thanks for the reply!
Really depends on how the truck is used. On the highway or towing it will regen less often, but at least every 500 miles. With city driving it can be as frequently as every 100 - 150 miles. Regen time also varies, but 15 - 20 miles is my experience in the highway. Lots of variables though.
Really depends on how the truck is used. On the highway or towing it will regen less often, but at least every 500 miles. With city driving it can be as frequently as every 100 - 150 miles. Regen time also varies, but 15 - 20 miles is my experience in the highway. Lots of variables though.
This seems to be how mine is as well. It does it every tank which is around 540 miles. I have not towed anything yet, just regular driving with mostly strait country backroads.
I hate this this because it pretty much ruins an entire tank mpg wise but then again I didn’t get it for that reason. I just wanted to make sure what the truck was doing was right.
If you are getting 19 MPG highway, you are doing quite well. I only record/reset MPG at refuel. I found with my truck and driving habits with one active regeneration per tank typically, one AR cost 0.9 MPG for a tank of fuel, refueling around 1/4 remaining. Over the years there were rare times where an AR would skip a full tank and I would see the almost 1 MPG increase for the same driving but the previous or next tank would have two regenerations. When I was daily driving the truck with regenerations this time last year, my average was 12.6 MPG non-towing. Towing average wasn't much of a change at 11.4 MPG at typically 16,000 lbs GCVW.
Also, just as part of your learning, DEF (SCR) and the DPF (the ceramic filter) fight different issues. I don't think this attached diagram has changed for the 2017+ models.
Thank you guys for all the info. Does yalls trucks tell you when it’s doing a regen? Like, does an alert come up in screen when it is in the process? I have not noticed mine doing this but a friend of mine says his 2011 F250 6.7 does.
If you like to have the information "just because," apparently on the 2017+ there is a ghost screen that you can ask the dealer to activate as a DPF percentage filled screen. I'd wait for someone with a newer truck to further clarify though.
When your truck performs the regeneration process (essentially cleaning out the DPF) it injects additional fuel which lowers your mileage for that period of time. You may smell a "hot" smell and/or hear ticking and clicking as the exhaust gets extremely hot.
Ahh yes, the smell of the hot incinerator under your truck. Mine go from about 430 ish to almost 500 miles between each regen. I've reset my A trip when an active regen has started and I believe it used 1.4 or so. But my truck is always off when it comes to fuel used, so I'd say it's only one gallon tops.
I run a Banks iDash 1.8 to let me know when she's in regen mode. A lot of guys use the Edge CTS2 for monitoring duties. And some use their phone or an old phone or tablet with an app and OBD2 Bluetooth adaptor to read their trucks PIDS.
If you like to have the information "just because," apparently on the 2017+ there is a ghost screen that you can ask the dealer to activate as a DPF percentage filled screen. I'd wait for someone with a newer truck to further clarify though.
I know I can do it myself with FORScan, the MX Link adaptor and my PC, but I put the Pro in procrastinate, so I think I have to ask my friend who works at a Ford dealer to have it down and just pay the hour labor rate.
