rattling or backfiring?

Festively Jolly Audi_Audio at webtv.net
Mon Sep 10 22:34:35 EDT 2001

hey list!  ok i gots me a very annoying problem.  my car is a 1988 audi
90 FWD and when i start it (outside temp does not matter)  it will
stumble and rumble and pit putt until about 5 min later when the engine
or exhaust warms up.  i cant tell what the problem is exactly.  it
sounds like the noise is in the exhaust, but what would that be?  its
only when i use about 1/2 throttle and no more than 5 min or so into the
drive.  anyone have any advice where to  start looking?  thanks ALOT

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