Left to Utah for Memorial Day weekend. Had 3k miles on the clock when I left. Truck did great over the Rockies and the Wasatch mountain passes. Comp said 19.5 there but hand calc’d at 18.7 unloaded at 65-75mph. First long set of miles as I usually use it for going to work and that’s about it.

Coming back today I was going about 72mph on cruise and the RPM dropped twice very suddenly on flat land. Felt almost as if I hit the biggest gusts of wind ever recorded cause it pushed me at the steering wheel. I immediately hit the go pedal and the power came back. No codes or anything flashing at me. Checked the weather and I was supposed to have a 5mph tail wind. Got me really nervous. This was about when I hit 3700 miles. It did it one more time and kind of bucked after. I stopped at a station in Green River and could smell something super hot almost burning through the vents as I was idling to cool the turbo. I got my head everywhere I could and it was definitely smelly in the engine bay. Couldn’t figure out what it was. Got our drinks and before I left I checked again but the smell was mostly gone. Started up fine. Sounded fine. Watched it like a hawk the rest of the drive but it seemed ok.

Second weird thing was I was getting about 20 per the computer for the first 180 miles (back on the roadblock after green river) then about when I was 20ish miles from the Colorado border it went into Regen. It lasted almost 60 miles clear past grand junction. Dropped the mileage down to 17.9 over that past 240 miles. I watched the instant gauge like a hawk. Never had a Regen last that long. Might have been my first active instead of passive. Just seemed excessive but this is my first powerstroke. Is that normal?

 

How do you know the regen lasted 20 miles? Seems long for an unloaded drive/

 

You should have an active regen at no greater than 500mile intervals and/or the DPF filter is 100% full (DPF filters can get up to 300% full but your truck would not be operational by that time)

As for the smell, it was an active regen. The exhaust system gets pretty hot during regen. I think it gets to somewhere between 1100-1300F. I’ve done a few stationary operator commanded regens in my driveway and it stinks all my neighbours out.

My regens when my filter is full last about 30min at highway speeds. (35ish miles) The regens can last longer if they need to though. I do a lot of highway driving so my filter generally gets cleaned out by regen more than a truck that does a lot of stop and low speed driving.

As for the sluggish feeling, I haven’t noticed the truck feeling sluggish during a regen. The only way I can tell that I’m in regen, without looking and the DPF % screen, is my fuel mileage drops drastically. I have never had the feeling of a big wind gust during an active regen. That seems weird.

 

I can usually tell just by the seat of the pants when it’s burning hot. Then I come to a stop light or park and the smell catches up. Like I said, I was getting great mileage, saw it kicked on and I reset Trip 2. It stayed around the 11mpg mark for about 60 miles.

 

I checked everything and know the smell of a Regen. I’ve had people ask if my truck was ok cause it smelled super hot and the DEF injector going nuts. The mileage didn’t drop. The feel of the motor was normal. Amazing how it feels while burning hot and then the amount of power available after the DPF is cleaned. This smelled like straight up burning plastic or rubber. Wondering if there are any hoses or wires people know about that might have touched something they shouldn’t. The active Regen began about 50 miles into the drive after I stopped in green river due to the erratic engine behavior and smell. I can’t see it doing Two Regens at highways speed less than 100 miles apart especially when the one I logged was so long.

 

I cannot offer a definitive answer for your "head wind d", but I offer the following:

Active adaptive cruise, if at maximum, could feel like hitting a wind wall when you are coming up on a slower vehicle.

At maximum, it may not even be apparent that you are closing on another vehicle. You can adjust this on the steering wheel controls, or turn it off.

Willie

 

Do the new trucks do a better job of showing when they are in a regen cycle? How are you seeing your DPF level?

My '14 would just flash a regen message for a second; easy to miss. I finally installed an OBD transmitter and ran Torque Pro on a small tablet just so I could see the DPF status and when the truck was in regen. Wondering if I will have to do the same with the '19.

 

I have DPF status enabled from forscan. It shows the percentage. It kicks on if warmed up and going over 40 once the screen reads 99%. Never seen a screen or anything. I just watch the instant MPG and wait for it to dive down.