Re: Auto trans cooler blown

[Tony Guttmann <tonyg@ms.unimelb.edu.au>]

This sounds like a different mechanism. In the Audi automatic transmission,
the coolant circuit runs through the slush box. If coolant is not
optimal, it corrodes from the inside, and "lets go" as superheated
water into the auto trans, frequently destroying the linings on
the clutch packs before you even realise that there is a problem.

My mechanic has encountered this often. But managed to save one
last week, though he explained the problem to the customer and warned
them that their slush-box was now on borrowed time.

>From your description it sounds like the Ford runs its transmission
fluid through the radiator, rather than the dumb Audi idea of putting
coolant through the transmission.

A number of owners here in Australia have replaced the transmission 
cooler with an external, air cooled one, to avert this problem.
(Yet another reason to hate the older Audi auto transmissions).

Cheers,

Tony Guttmann
Audi 200T (auto, sob).
On Thu, Mar 18, 1999 at 05:59:55PM -0500, Michael Zamikhovsky wrote:
> 
> 
> Steve Brehm wrote:
> 
> > Hi All,
> >
> > I posted to the list a while back about selling my 87 5KCST auto as a parts/project car, as I thought the tranny/differential was gone. Well, I discovered today that the ATF I thought was dissapearing into the diff was instead going into the coolant supply, I guess throught a leaking transmission cooler. The coolant level in the overflow tank keeps rising and getting redder. I didn't notice it right away as my coolant is that red non-phosphate stuff.
> >
> > Anyway, has anybody here have a successful BTDT on this one??
> >
> > --Steve
> 
> My neighbor had in his F*rd pickup. We flushed out both systems and repared the leak ( in the radiator ) and it was OK
> 
> Mike Z

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