i recently just bought a 99 galant with the 4g64 motor in it, and im having a problem keeping it idle. i lost a piece and cant figure out what it is or the name someone please help!

close up


farther away


i took these photos a few days ago, and kept driving as i had no time, now its gone and i need them! please and thank you!

 

You will have to find another screw to put that plate back on your throttle body, the same thing happened to my eclipse, it will run fine after you do this, the hardware store should have a suitable screw