proportional valve: how important to have working one?

[Kneale Brownson]

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This is a dealer-only part, I'm told, and is quite expensive even with List
discounts.

At 06:21 PM 02/27/2002 -0500, Konstantin Bogach wrote:

>Did anybody feel a difference in praking after replacing bad proportional
>valve?
>
>Konstantin Bogach.
>
>Kneale Brownson wrote:
>
> > Proportioning valve is supposed to adjust rear braking for load, I
> > believe.  Don't know what that adjustment would be, though.  If your rotors
> > are remaining rust-free, your rear brakes are working, probably at least
> > for minimum loading of the car.
> >
> > At 05:31 PM 02/26/2002 -0500, Konstantin Bogach wrote:
> >
> > >Hi listers.
> > >
> > >Proportional valves on both my cars do not work.  They are frozen.  How
> > >significantly it affects braking?  Can it freeze in such position that
> > >reduce overall braking power?
> > >
> > >Thank you.
> > >
> > >Konstantin Bogach
> > >200tq '89
> > >200tqa '89
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