Baffling Autobox Problem

[james accordino]

--- Alexander van Gerbig <Audi_80 at email.msn.com>
wrote:
> The trans shop yanked the tranny and showed him all
> the new parts, confirmed
> that everything was in place, confirmed new seals,
> and so on.  New torque
> converter too.
> He tells me that in
> all gears when the
> engine is revved nothing happens at all, no turning,
> no fluid movement in
> the trans, and definitely nothing moving. 

O.K.  Trans is behind differential.  Power is
transmitted from the engine to the trans through a
hollow shaft.  Inner shaft drives the trans, and outer
shaft connects trans back to diff.  If "nothing"
really happens when revving the engine, and a trans
shop should be able to verify this by checking the
pressures attained by the pump, then obviously the
pump is not being driven.  Even a BEAT hydraulic pump
creates "some" pressure.  If he gets any kind of a
pressure reading at all, then it's trans internals,
and I'd start looking right at the pump itself.  OTOH
if he registers no pressure, then the shaft is
incorrectly installed, broken, the torque converter is
bad (they DID fill that thing with fluid right?) or
some other loss of mechanical connection.  DIYers get
the trans bolted up all the time with that drive rod
not engaged.  It's hard, but it can be done.

> Park
> engages and keeps the car
> from moving, but that is the only gear that works. 

That part is purely mechanical.  Parking pawl engages
toothed wheel to keep shafts locked.  It really has
nothing to do with the tranny operation which is a
hydraulic pressure coupler between engine and diff.

GOOD LUCK
Jim Accordino