Tow/Haul

[cappy]

Is it neccessary to use the tow haul function when hauling a load i know it helps in stopping but does it do anything for puling?

[Dave]

It bumps up line pressure in the tranny and changes shift points as well. depends on how much weight you are pulling really if you are gonna use it

[cappy]

My camper is only about 4500 pounds should i use it when hauling it? Thanks

[Dave]

It wouldnt hurt anything at all i would use especially for pulling hills and stuff like that

[cappy]

Thanks for the info

[Alberta 99 F250]

My ford mechanic told me that when towing to always have the overdrive off and keep the rpm's between 2000-3000.

[mcmmotorsports]

Originally Posted by Alberta 99 F250

My ford mechanic told me that when towing to always have the overdrive off and keep the rpm's between 2000-3000.

See,now I thought the tow/haul switch turned off the O/D but I just came home and switched it on at 65mph and it stayed in overdrive. In fact, from a stop it shifted into O/D as well. Now, the shifting was firmer and it was firmer downshifting and held it in gear longer too. This was also using the IDP Xtreme Street tune.

[Alberta 99 F250]

My truck is a 99 and the switch on the gearshift is for overdrive on/off. I think in the later years the gearshift says tow/haul. As far as I know it's the same and turns off the overdrive.

[vitalidle]

You can tow in overdrive without any issues as long as the tranny isn't always hunting for gears. In other words its not constantly downshifting and upshifting into od.

[SDDan]

On the newer 5 spd Torqshift autos the tow/ haul mode does not turn off overdrive. It does as stated before increase line pressure and I believe change when the torque converter locks up and gives you that, "exhaust brake" feature when going down hill or braking hard.