'79 Audi 5k 5cyl fuel injected AutoTrans

["Mike Cook (Office)" <mcook@microsoft.com>]

I've got a good one for you folks.  I'm restoring a 79 Audi and I'm trying
to do it with a Haynes manual (okay, so there are better service manuals,
I'm cheap) I've got it purring like a kitten except for one thing.  It
starts fine, the cold start valve works exactly as it should, the air bypass
assembly is working properly, the fuel adjuster (with the bimetallic arm)
bolted to the side of the block is working fine (this one doesn't have the
vacuum line by the way).  After it starts, it runs for two to three seconds,
then it cuts out and the engine bucks like a bronco for about a minute to a
minute and a half (often stalling out) and then starts purring like a kitten
and runs incredibly good after that for as long as it's on.

I've checked all the sensors, cleaned them up, refit them, tested them
again, checked for vacuum leaks (and there were plenty when I first started
restoring this car) and looked for anything else not listed in the book.
Ah-ha, I find a set of two brown wires going to the throttle assembly (upper
left corner as you're looking across the fuel pump and filter assembly).
So, I disconnect them, start the car. It runs perfectly during the first
minute and a half and then stops abruptly.  Once I reconnect them the engine
runs fine. What are these two brown wires connected to? I can't find these
wires in the Haynes manual and there are only two paragraphs about the
throttle assembly for the fuel injected 5 cylinder.

Any clues would be gladly appreciated.

History of the car (for those of you interested who might be interested).
My old boss gave me the car.  When I received it, it had a foot of water in
the trunk (honest, the vacuum reservoir, spare tire, and jack were under
water).  It had been obviously parked under a cedar tree for about three
years.  It took me a week to find all the organic material in and on the car
and remove it (including drying it out).  Amazingly, the sun roof worked
perfectly and drained water as it should.  The interior had seen better
days, but it can wait until the mechanical aspects of the vehicle get dealt
with.  I don't know how they broke the cigarette lighter assembly, but they
did and it caused all sorts of damage to the wiring (the fuse apparently
didn't blow properly, or in their infinite wisdom shorted it out with a
screwdriver to see what was causing the problem, which they never did find).

All in all, I've spent about $500 getting it up to running condition (mostly
on tires, rear brake cylinders, fuel filter, air conditioner fuse).  The
most difficult part so far has been rebuilding the instrumentation cluster
and the gear shift assembly.  Tracing down the vacuum leaks has been the
most time consuming thing.  The only reason I took this car on, it only had
118K miles on it.  Honest.  It belonged to his mother in California and she
had the top end of the engine redone at about 80K miles.  So, once I get
over this start up hurdle, I can proceed with the rest of my restoration
(also, the car has never been in an accident, so that's another major plus).
The only body part I may need to replace is the left front quarter panel (a
fair amount of rust has eaten through the section just behind the wheel).
In about six months, this little machine is going to look incredible
(providing someone can tell me what these two brown wires do and what could
possibly be my problem).

Thanks folks.