The burb is making a rattling sound. I've made a video of it to show that sound and when it's happening which seems to be when the RPM drops to idle or just below idle. It's a metal sort of sort which goes away even if I hit the gas a little bit. Leads me to believe it has something to do with either the pulley system or something is just loose like a skid plate or something. It's coming from the passenger side cabin and engine bay when I open the hood.