I have no idea what Meineke did. What you described doesn't make sense to me. My first guess, based on your description is an exhaust problem. The banging under the car could be caused by a loose exhaust bumping the frame. The ratteling you hear could be from a heat shield or the internal parts in the catylatic converter could be loose causing it. Take a rubber mallot and tap on the system to see if you can duplicate the sound. Also, make sure you do it when the car is cold. Move the exhaust with your hand or foot to see if it is loose.
Let me know what you find. Also, can you redescribe what Meineke did? I really don't understand.
Let me know.
Tuesday, October 13th, 2009 AT 11:20 AM