One problem related to power train has been reported for the 2001 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Toyota Sienna based on all problems reported for the 2001 Sienna.
[this incident has also been reported to Toyota - case # 1502242271. ] I exited parking lot and turned left to travel north on two-lane street at 5 pm. Immediately after entering the lane, my car began to decelerate. I pressed the accelerator, and it was stuck in position. I tapped the pedal, at which point the pedal locked in the down position, and the car raced forward, with tires screeching. I immediately hit the brakes and put in car in neutral. The engine continued to rev at 5000-6000 rpm while I pulled off to the shoulder on the right. After putting the shift into park, I reached down with my hand, noted there was no carpet interfering with the pedal, yet it was stuck in the downward position. I pulled back a few times and was able to free the accelerator pedal movement, at which point the engine began to idle. I tested the pedal several times before resuming my route. At my first left turn after the acceleration incident, I noted that the car had no power steering, and I was barely able to turn the car a sharp 90 degrees to the left. The remainder of my ride home, the car had no power steering.