4000s starting issue (no click/crank)

[928s at canada.com]

Hello,

 Well upon the advice of another on how to hot-wire the
4000, I tried connecting a wire between the Solenoid's 
2 big bolts (Term30 & ConnectionA). Many sparks. Then a
turn of the key & only 1 click. Another turn of the key
& no engine noise, just fuel pump. Maybe I have the
wrong 2 connections shorted. I was under the impression
the car would start w/o turn of key.?
 The ground wire from ConnectionA to body of Starter is
OK. It's a bit tight underneath the car and I could not
see any rear mounting bolts. I believe the transmission
is sitting low due to an incident a few years ago.
 Is the "Engine to earth Ground" the wire that connects
to the front bodywork from nearby the motor oil refill
cap? If so, mines OK.

 alex v.
 early '86 4000s auto
 5-Cyl. 2.2

SuffolkD at aol.com  to quattro, kneale, 928s 

>From memory, there is a ground wire from the solenoid
to the starter motor casing.  If this corrodes a higher
resistance would interfer with normal starter
operation. 
HTH - Scott by BOSTON 

Huw Powell  <audi at humanspeakers.com> to 928s, quattro 
>  I checked the solenoid with a testlamp. lights OK at
> OFF (term30) & lights OK at turn of key to start
> position (ConnectionA).

I think you have that backwards - 30 is the battery
(big wire/stud on
starter) and should always be live.  50 is the circuit
energized by the
key in the "start" position, "from" the switch is one
of the small
wires, and "back" to the fusebox is switched by the
solenoid.

Anyway, if you've got a good 12v at the battery
terminal and a good 12v
coming in from the ign switch and nothing happens...
need new starter.

>  Seems to be a bad solenoid at this point.

Yes, it does.  Often, the heavy wire going to it from
the starter body
(forgive for not going to get one to look at and
describe better)
corrodes away and is a pain to repair.

> Strange
> though, when I have the key in the half-turn postion,
> the hork hardly makes more than a click noise. The
Horn
> fuse is OK.

Let's fix the horn later.

>  Briefly looking through my notes & the "Audi 4000,
> Coupe: 1984-87 Manual", it mentions a groundwire &
> mounting bolts - neither or which i can see (looking
> back from the front of the vehicle).

There are two mounting bolts, one with a nut and one
that screws into
the starter itself from behind.  They are respectively
directly below
and directly above the main starter body.  The starter
is grounded by
its body to the engine block where it mounts.  (or,
arguably, by the
mounting bolts)

> I have it up on
> the standard jack so I guess I need to view from
behind
> the right-front tyre. Any tips on RE & RE ?

Yes.  First, put that factory trunk jack out for
recycling with the
aluminum cans.  Pick up a real (small is ok) jack and a
pair of
jackstands.

Disconnect battery ground wire and make sure it can't
remake contact.
Jack up right front corner and support with stand or
stands.  Remove RF
wheel.  At front of solenoid remove the three wires
(some only have
two).  Keep track of which small one goes where if
there are two.

Wrestle around to get the lower bolt and nut undone and
the upper bolt
out.  No need to completely pull out the upper one if
you can help it.
Access for the top one is easiest through the wheel
well, although you
won't be able to see it fro the angle you will undo it.
 make sure it's
the right one, as there are other tranny bolts in the
neighborhood.

When it's out clean the area where it mounts to the
block as that is how
it is grounded.

Bolt the new (or good used) one in and reconnect wires.
 Double check
wires.  Reconnect battery ground and test before
installing wheel and
lowering car.