Over the last week or so, my car has been making this weird grinding sound when i'm either reversing slowly, or accelerating slowly. This is accompanied by a heavy vibration that rattles the vents in the car. The vibration only occurs when i'm coming to a stop/completely stopped. What am i looking at here guys, any idea/ what i should check for? I've heard maybe tranny/engine mounts going bad. I'm trying to get rid of this car soon, and don't need it dying on me now. Any help is appreciated.