u/TiredcupofNoodles20

This is a base model 2006 pt Cruiser, I've just gotten my girl back after having the ac fixed. She's never done that noise before and while she is idling, her rpm bounces up and down between 1 and 2 while making that noise and does like this sort of straining rattling. Not the noise but the way she vibrates feels off. Can anyone tell me what it is? The noise seems to be more prominent on the left side.