A while back I was in an accident and there was some damage to the front of my car. It was fixed well, but every now and then I here a knocking sound like something is loose and swinging around hitting something behind my dashboard but between the firewall whenever I turn going downhill. Im sorry the description isnt good but its hard to explain. If anybody understands what I mean I would appreciate it, thanks. Have not been able to take it to a mechanic.