That did it! The car did not shutoff when the hole was plugged. Whom ever adjusted the JG TB from factory(16 years ago) had the BF screw slight too far in. The BF was OPEN just enough to not seal properly. The build up gunk was the seal.....see that whole at the top inside the TB.
put your finger over that while its idling.
The car should shut off. If the idle just drops but not shut off. Then you have a vac leak.
If your iacv was really dirty it can over work to idle normal and once you clean it it has to relearn how to idle correctly.