I recently have been experiencing a noise coming from my catalayc converter. Whenever my car is idling or driving at a low speed it rattles. I looked at it when car was off and when i hit it with my fist it rattled just as if my car was on. Does this mean i need to replace it or does it mean something is loose?? everything is welded so i'm not really wanting to replace it if not needed.
Feb 14, 2008 at 5:43 PM