General Maintenance & Repairs - Need help

So i just got my car running again witha 30k mile lq4 it is all running good besides when it heats up to 210 the it makes a loud squkeel under idle not somuch when i am giving it gas i didnt plug the air lines that got to the back of intake back in i capped the intake off but left the lines alone i have no idea what it could be ..

Sounds like a bad belt but i dont see how it could do it only when warm

Anyone??