Hey guys, ive been noticing that my car has been making a weird noise around 800-1000 rpm. I figured it might be a belt issue or something, and saw today that my idler pulley seems to be vibrating. sound is only coming from those specific rpms 800-1000, making like a krrrrrrrrrrrrrr noise or like if something was grinding noise. noticed that my idle has been a little funky lately also, and i figured maybe it was related to this or something. sometimes my rpms jump from 600 to 800 then back down after a blip in throttle. looking to replace the tensioner, anyone know if this will fix my issues?
youtube video of my tensioner pully:
https://www.youtube.com/shorts/0RCg7TqWzqw