91 200tq Exhaust Rattle in Cats?

["P-O Selander (EUS)" <EUSPOS@am1.ericsson.se>]

Peter Dowker wrote:
Noise sounds like a loose flap or pebbles in a can, sort of a rhythmical
clank, varies with speed

Peter,
It is very possible that the innards (all or parts) of your catalytic
converter are now hiding in the center or rear muffler. It happened to my
car. Same "strange" noise, didn't understand it first. When I took the
mufflers off to clean them out, entire innards from converter came out. The
honeycomb ceramic from the cat looks very much like charcoal.
I'll check the following link for good prices on cats:
http://www.discountconverter.com/converters/audi/index.htm

Good Luck
P-O Selander, Bellevue, WA
89 100E
91 300ZXTT