Towing in the mountains with a gasser????
I recently upgraded from a pop up to a travel trailer that is 5000 pounds dry. Also got a new truck...2012 Toyota Tundra. Today i towed through some pretty steep mountains. I locked out ovrrdri...
Forum Discussion
Dave H M wrote:
Ricon. I hate to agree with a Mod. :W
But you are not near up to date on the auto trans. My last TV was a 99 F250 psd and it always locked up when I shifted out of OD on the grades.
Where are you getting that info on modern day transmissions?
Well I am wrong on occasion! LOL. But its modern transmissions that I am most familiar with...not older ones. And really, they are not fundamentally different.
I think there is more honest and unintentional confusion here than anything. Confusion over "OD off" options, vs locking out higher gears or selecting gears manually, vs "torque converter lockup" which is completely and entirely different.
The torque converter lockup is done via numerous clutch types, which stops all slippage of the 2 "fans" within. Its the ATF "slipping" between the fans that raises heat, but this is required for auto trans to operate correctly.
Whether or not the lock up clutch is activated in lower gears at speed could only be proven with a scan tool displaying when the lock out clutch is activated.
