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Proprtioning valve & ABS
In message <email@example.com> Brett Dikeman writes:
> I was not aware that any ABS system on the market used accelerometers,
> especially since in '90-92 they were very expensive, unreliable, and
> innaccurate. I might expect them in traction control systems nowadays...
Well, it's _called_ an accelerometer. It's actually a mercury switch.
They were first fitted to the Sport quattro (in transverse orientation) and
they showed up in the ur-quattro/200/5000 in 1988/9. It's a small black
object mounted under the rear seat, with a prominent arrow pointing in the
(usual) direction of travel.
Committee Member, UK Audi [ur-]quattro Owners Club