Outer Limits 4x4 Board

I have a 100 series Toyota Lancruiser HDJ100R the Engine is 1HDFTE and I am towing a Caravan around Australia. What I need to know is "Does the torque Convertor lock up in 4th Gear ?". Arthur

If it is all working correctly, then yes it will lock in 3rd or 4th gears.

You should be able to see all this happen on the tachometer while driving.