So my car just recently started making a low grinding noise, it does it even when I'm idling in neutral. I can't tell if it's in front or in back. I think it's from the back. Any thoughts or suggestions are welcome.

 

Could be the tensioner bearing starting to make noise or a bearing in any of the accessory items.

If it goes away when you push the clutch completely in then it's the input shaft bearing making noise.