[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

RE: Exhaust System

------------------Reply to mail dated 24-JUN-1992 11:21:04.31------------------

>What produces the rattling noise in most old Audi exhaust system?
>Is it the catalyc converter or the resonator or the muffler?

I have found two sources of rattling in older cars. 1) the narrow, capped 
exhaust test tube which runs from just before the converter back up to the 
manifold area will loosen and rattle.  I removed mine. 2) the thin outer
case of the converter can work loose and resonate at certain rpm frequencies.