From digest.v5.n4 Fri Jul 19 11:54:03 1996
From: Autry_Andy_at_bns.attmail.com
Date: Fri, 19 Jul 1996 11:05:13 -0400
Subject: <RE> 325iC rattles

Just a suggestion. (especially if your car is an Automatic) I had a similar problem with my 95 325i. It drove me nuts--I pulled apart the dash etc. and could not locate the source of the irritation, but I finally realized that the sound was coming from the other side of the firewall. You will find that the brackets for holding the DME and Automatic logic unit are not very well designed---my DME was rattling against the "brain" of the automatic. But if the DME is not properly seated in the bracket it could potentially rattle also.

Good Luck!
ps. Just in case you do not know where the DME is located--it is behind the (+Postive Battery junction) under the hood (ie directly in front of the glove box)