I pull a 16k pound horse trailer With my 19 dually. With tow- haul on, if I have to slow down it will downshift and hold lower gear until I reach bottom of hill. It does not like to upshift on a downgrade. I even tried it today with no TH mode and it was the same! Is everyone just using the manual shift buttons??

 

You have to throttle command out of it. I assume you didn't apply enough throttle.

 

possibly. It was In 3rd gear at 3k RPM and I didn’t want to rev it much harder.

 

It can rev to 3500 pulling, and higher (4200) if holding back a load, it requires the throttle input to know it can shift up as it will lose its holding power once upshifted. Its just making sure you really want that before it upshifts because it knows it likely cant go back to that gear unless you use the foot brake, or the trailer brake. This is because it is load sensing, so your trailer is contributing to this as well. So, same hill empty, no trailer, would require a bit of throttle to upshift, add the trailer, it will require more, add a load to the trailer or a steeper hill, even more.

 

Why not?
...

 

Nail the skinny pedal.

 

I have the same problem. You have to rev it really hard. Much harder than you should, like 1500 rpm over what it's at. In my opinion, there's something jacked up in the software programming of the transmission. This is a complaint that has been made by numerous forum members. It only happens when going downhill and towing, while using the tow mode. I believe that using just the exhaust brake exhibits the same problem, but I rarely have just the exhaust brake on so I can't confirm that.

 

Yep, mine does the same thing...really annoying.

 

ford390gashog,

I sent you a PM. If you get a chance please read it.

Thanks.

 

 

These transmissions appear to be somewhat capable of learning how you drive. The More miles you put on
the better it anticipates what you want it to do. I rarely use the brakes any more to the point it’s almost dangerous because because of my brake lights are not lit when stopping. I turn on exhaust brake every time I start the engine when slowing down just tap brake pedal once to make it downshift when I want next lower gear, tap throttle once to shift up. Truck is grossing 10k every day it’s on the road, has 117k miles and rear pads are still factory pads changed front ones at 98k miles still original rotors. Cheers

 

Thanks everyone !! She is a beast so it’s all good!

 

Still talking about the truck right?

 

Can't agree more, It would seem to me almost any throttle pedal input those situations would tell the PCM "Ok I no longer want to be EXTREME braking" and go ahead and upshift. The first time that happened was on a 9% grade and I figured I was going to have to clean up all the pistons and rods when they flew out the block....

 

Deleted wrong context