Thanks for the heads up. I almost had a panic attack. Driving from MD to Park City, Utah in a 1986 Toyota Grandville, 22re engine. Leaving the badlands headed to Mt. Rushmore and start to hear a clicking from the steering column then the transmission slips a few times. As my dad is driving I stumble across this thread and switch the o/d off and the clicking stops and we are on our way. Hopefully it was just the altitude. Update later.