Tranny question

I think you forgot the image

image is back, sorry

never seen that before, but your idling problems sounds like an IACV issue.

It is a part of broken pressure valve. I'm wondering how I was able to drive like that past month (about 5k since). I'll pick car tomorrow, so we'll se how it is. I assume that extensive noise was coming from tranny

what the hell is that part ?

so you found it after a flush?

Yep, after flush. It was in the pan .. Finally I took car to Mr. Transmission because Toyota dealership know nothing about this part. So regarding mechanic it is piece of high pressure valve (I have no clue). I'll pick car today evening and give it a short run for about 2 - 3k in next few day to see how repairs was done.
My guess it gets broken about a month ago when I was driving in Wight Mountains area (NS,USA). I've heard metal bang. It was seem to me like part of the car came out. I pulled over, inspected everything I was able .. nothing. But engine stat sound weird on acceleration - it is not a usual sound as it use to be. I dove about 6k since, gets wires, rotor, distributor cap and plugs replaced - it doesn't help - till this part was accidentally found in tranny pan.
I’ll update post when I have more news.