Thank you for replies.
My car is having rough idle, b/w 500-600 rpm when it should be close to 650 rpm after engine is warmed up. Acceleration etc is fine otherwise so dunno what else the issue could be.
How should the valve be cleaned? Safe to clean with petrol? I dont have any dedicated carb/TB cleaner spray.
Also have to re-confirm but by any chance, are any radiator hoses connected to it? As for opening TB removal itself, Toyota manual mentions flushing radiator... I have already cleaned butterfly valve of TB, without removal.
