My cats on my 97 A4Q 2.8 have been rattling like a rock tumbler.  I
have ordered a new set; but, in the meantime, my check engine light
just come on last night.  Everything else looked fine.  Does this have
some broader implications; or will this go away with the new cats?

Okay, I have a 1987 audi quattro 4000s, I just got this car recently
and i figure i should give it a once over, It runs fine, theres a
small problem with the idle though, but, I cannot seem to locate an
aircleaner anywhere? I took off my intake boot and just found a plate

audi a6 2.5 tdi 1999
hi all further to my post on this news group ref:- warning lights i have now
got my car back from the garage but still got the problem.
what happened 1st was the red box with the ! inside  and the abs light came

I'm new to this group so please bear with this probably inane question.  I
just purchased an '04 S4 Avant and have been reading the owner's manual
which states that driving lights (fog + sidelights) automatically come on
when light switch is on "O" position.  I think I've read ...