I hear a weird like metal to metal buzzing it doesnt sound severe but it sounds like it could lead to somethin worse, the sound is coming from under and center of the car and i have no idea what it is if some one could help me out that would be cool

 

Check for an exhaust vibration - don't sweat yet

 

ok, but the werid thing is, it only happpens when i first start it up, while i am idleing in traffic or any other time i come to a stop