Tow haul mode?

I use it if the trans seems to be hunting to hold a gear. Or if I need the engine brake.

The torque converter locks up if over 1200 RPM. So that is not a concern. There is no difference in trans temp, if not getting a lot of shifting. If driving into a head wind, or in the hills, I use it.

Fuel mileage is better without TH.

My edge insight reads 10 to 15 degrees cooler when pulling a long grade with the TH mode on as opposed to pulling with TH off. I leave mine on all the time when towing.

Steve

I, too, always use it when towing.

Mike

rattleNsmoke wrote:
With your TorqueShift Ford tranny, your shift points are electronically altered to keep your engine in peak torque range while towing in lower gears. Once your at highway speeds there's no difference in RPM's in or out of T\H mode. Click it on and forget it.

X2

Wouldn't think of towing without it.

laknox wrote:

ib_leblanc wrote:
Pulling 10,000 lb fifth wheel with f350, 6.4 deisel.. do you have to always use tow haul mode even on flat interstates?

I can't speak for the Fords, but on my Allison, TH mode bumps up the shift points to a higher rpm and locks the torque converter sooner. It also engages auto-downshift. If I'm towing on the flat, I'll turn it off as I approach my target speed (usually around 60 mph) so it will hit OD sooner, then turn it back on to to handle any grades. YMMV...

Lyle

This is how the 6r140 behind the 6.7 Powerstroke behaves as well. Even when towing 30,000 lb trailers I seldom use T/H. I use it when going down a steep grade if the grade is long enough that I want the engine to brake and when driving aggressive and desiring the higher rpm shift points.

My 2010 Dodge needs to be reset to tow mode every time I shut down the engine

Engine started, trailer hooked up, T/H button gets pushed. After near 40 years of driving nothing but stick shifts the habit continues through use of the pedal to perhaps downshift a little early or upshift by lifting off the pedal momentarily just like driving a stick.

When faced with hills, especially downgrades I'll shift to the manual mode. I don't like an engine screaming at 3000rpm for any extended time.

At times, with full water & ready for a week of no grocery stops or hookups, we weigh about 14,000. Not the heaviest but far from being a lightweight.

larry barnhart wrote:
I cannot understand if any body feels they don't need the tow haul mode when towing. Friend just told me he does use his but not all of the time. Then he said I really don't know what it does. I tried to explain but I ended the story in the middle because he wasn't interested enough to listen.
chevman

His loss. Too bad you'll still have to listen to him cry after he smokes the transmission

B.O.

Every time I start my truck I hit the TH and EB buttons. Keeps the line pressures up un the trans and keeps the trans from going into too high of a gear and lugging, example 6th at 45. Also allows the EB to work the best so the brakes last longer solo driving and also slows the trailer when towing. Also keeps the turbo/EB working properly.

SandSOrrell wrote:
I always (try to) remember to use T/H, even on flat runs. If I forget (and have a couple of times) DW reminds me. LOL I've found in my Chevy D/A it helps to slow you down on the ramps as you exit the freeway. Downshifts a little earlier as you slow - saves on braking some.

X2

-BC-