I have a beautiful 318is 1993. It is very reliable and I have not had anything go wrong in the year I have owned it. There is however one problem I have not even been able to locate. When accelerating in 2nd gear, sometimes 1st if I push it, or sometimes third I get a banging noise directly under the emergency brake. I assumed it was a pipe hitting the underside of the body. I have had the heat sheilds welded... put muffler hangers on the pipes and still no luck. I would rather not spend the money to have the shop test, and test, and test it until they locate the problem, so please help if you have any idea what could be making the noise.
Thank you for any help you might give,