Quote Originally Posted by timsrv View Post
It's possible. Disconnect your TPS (Throttle Position Sensor) and take a test drive to see if the problem is gone. If it's gone, then you have a bad TPS. The TPS is mounted to the side of your throttle body. Here's a thread that features the throttle body: http://www.toyotavantech.com/forum/s...-Throttle-Body. 5th picture down is a straight on view of it. Near the bottom of the 1st post I have a video link that shows how to adjust it.

There is a little spring clip on the TPS wire connector that makes it difficult to remove. Use a dental pick or something similar to remove the clip, then the connector will pull right off. Tim
Thank you Tim! Now more questions in mind...!

IF TPS is defect, is it possible to drive the van if the connector is unplug? if yes, what is the purpose of a TPS? I really need the van but for now with cold weather and no garage it's impossible to me to do the job.

For my personnal information, what is the utility of a "Fuel cut RPM"? i had a volkswagen golf and the rpm was cut in the hi rpm like 5500, but for the van i don't understand to cut it around 1800-2200...

I looked this morning in my old parts box from the last owner and i found a used TPS. As i saw in your video, i have to remove the throttle body to replace the TPS. I'll look in the repair manual how to check the TPS if it's work.