[s-cars] Need Input from Group

[Gregory Wolters]

Hi S-Car Folks,

I had a problem develop last night and I really need
some guidance from the group.  The patient is a 94 S4
with just under 135 K on it.

Coming home last night after picking up a pizza, car
running fine.  Drive home, all city driving, get to
uphill driveway and car starts to stumble, push in the
clutch, seems to be better at higher revs, I get up
the driveway and can smell to rotten egg smell.  A
couple of hours later I drove it again a couple of
blocks and got the same smell along with the smell of
gas.

Pulled code 2413 this AM.  Michelin Man hose has been
replaced 18K ago when I pulled the same code on hard
acceleration.  New O2 sensor 23K ago.  New plugs and
boots 14K ago.

My thoughts are to check the POS, check/clean MAF
connections.  I also think the multi temp sensor thing
is original.

Any input would be great.  Luckily I was able to
borrow a car to take my Mom in for eye surgery this
morning.  I need to get the S4 running ASAP (as
usual!).

TIA.

Greg
94 S4