Quote Originally Posted by dorikin View Post
I'm pretty sure the TB plate is sealing properly. When I had the intake piping off, I plugged my thumb over the hole in the Throttle Body (that leads to IACV) and the engine stalled.

Would this mean I have a good seal around the TB
if you did it while it was idle hunting then i would rule out vacuum leaks and throttle body not sealing, if you did it while it was idling normally it could just mean the TB plate was sealing nicely at the point in time but may still be intermittently leaking.