'90 Coupe Quattro stereo

["Timothy P. Gallagher" <76030.63@compuserve.com>]

I experience engine noise through my 1990 Audi Coupe Quattro factory-installed
AM/FM/cassette stereo; though the dealership has even replaced the stereo, free,
in an effort to fix the noise, no such luck.  The previous owner of the vehicle
had the same problem.  The dealership has had me contact an audio electric
specialist, I am scheduled Tuesday for the placement of a wiring "filter".  Has
everyone/anyone else had to do this?  I have searched through most of the
archives and have not seen this problem listed.

Tim Gallagher
Chicago, IL  USA