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JULIE KAY KOSIK SHICK <firstname.lastname@example.org> asked:
> Has anyone heard of this problem? 1990 V8 Quattro with an auto trans.
> The trans spews fluid out of the vent when driven. Driven hard or easy,
> it doesn't matter. none of the mechanics have been able to figure it
> out. Maybe someone here can, I hope.
OK, Julie, let's try a shot in the dark. I ran into this same
problem with a non-Audi (actually, it was a 1980 Olds Cutlass back
when I was selling them, but wottheheck...). The car in question
would drive OK for a while, but then fluid would spew out the vent.
It wouldn't do it when running on a lift, but only on the road.
Drove us crazy until we tore the tranny down completely, and a
sharp-eyed mechanic saw that one of the plates on the hydraulic pump
was slightly warped. When the transmission was operating under a
load (on the road) the warped plate allowed air to enter the pump, at
which point it was mixed with the fluid, creating lotsa foamy fluid -
when then expanded and spewed from the vent.
I have seen the hydraulic pump for the 84-91 5K series, (I have a
pump sitting on my workbench at home...I paid $600 for a new one, and
anything that expensive should be kept for a paper-weight) and it has a
cover plate which could be subject to a similar problem. Any OTHER
entry of air into the pressurized path of the ATF could create a similar
problem when it hit the pump, as it would create foam.
Try that one on your mechanic..............................
Al Powell Voice: 409/845-2807
107 Reed McDonald Bldg. Fax: 409/862-1202
College Station, TX 77843
Saunders' Slant: "If it's worth doing, it's worth hiring someone
who knows how to do it."