My car idled at 2-3000 when I first installing the engine.
Put my finger over the idle up hole on the TB and it idled correctly. Tried disconnection coolant lines but that didn't help (if lines are disconnected isn't you cold-idle up always going to be open?). Anyway blocked mine off and now I need to kick start it when cold. (gives the car character hehe)
I boiled the cold idle valve and it does indeed work like a thermostat. Later found my problem to be a blocked coolant passage feeding the TB. oh well, never looked back. one less worry and also makes your TB look much neater.
I tried using the original gasket but gasket sealer works better when I did mine. You also need shorter screws.
also note a JDM TB is not interchangable with a ADM. You need to use the correct manifolds as airports are on opposite sides - i tried.
