[Vwdiesel] Re: Continuing brake Problems

[Nate Wall]

Thanks Kerry. I bookmarked this site. They have (A-2) blower motors for $97. I
thought I'd be shelling out $250!

-NAte

crusader wrote:

> Chris and everone else,
>
> Thanks again for all you help.  The proportioning valve was leaking air.
> Got a new one from vwparts.com for $68.  she's running great now.
>
> Regards,
>
> Kerry
>
> ----- Original Message -----
> From: "Chris Boyer" <boyer at cts.com>
> To: "crusader" <crusader at nccw.net>; <vwdiesel at vwfans.com>
> Sent: Monday, January 06, 2003 10:37 PM
> Subject: Continuing brake Problems
>
> > Hi, Kerry....if you're bleeding the brakes and every time you get air,
> that
> > means
> > there is air leaking into the system.  Unless your proportioning valve has
> a
> > leak, I doubt it's defective.
> >
> > Before you spend your money on a proportioning valve, replace that rear
> wheel
> > cylinder which bubbles upon bleeding, and give it another shot.   I think
> I
> > spent
> > about $6-$12 for a wheel cylinder last time I bought one.
> >
> > If your mechanic is sure it's the proportioning valve, let him buy it and
> > put it in.
> > Pay him if it works.  Ask him to explain how a bad proportioning valve
> causes
> > air bubbles in the fluid.  Please send me his response; I'd love to know.
> >
> > If you're damned sold on replacing the proportioning valve, and don't want
> to
> > spend the money for a factory unit, get one from Wilwood.  You'll need to
> > adjust
> > it, but you can manually adjust the pressure differential between the
> front
> > and rear
> > brakes.  Make sure the proportioning valve you are replacing doesn't have
> a
> > delay valve built in.  The delay valve keeps the front brakes from
> applying
> > until
> > the rears have about 150psi line pressure.  The 150psi gives the rear
> > brakes a chance
> > to overcome return spring pressure so they apply at the same time as the
> > front brakes,
> > which do not have return spring pressure to overcome.
> >
> >
> > Let me know what you find if you get a chance.  I think you're overlooking
> > something
> > really simple, but deceptive.  You'll get it.
> >
> > Regards,
> >
> > Chris Boyer
> >
> >
> > At 07:13 PM 1/6/03 -0500, crusader wrote:
> > >After much frustration, I broke down and took to car to my local mechanic
> > >who also believes that it is the proportioning valve.  He also added that
> it
> > >is pricey.
> > >
> > >Does anyone know of a used one for sale?
> > >
> > >Thanks,
> > >
> > >Kerry
> > >----- Original Message -----
> > >From: "Chris Boyer" <boyer at cts.com>
> > >To: "Nate Wall" <nwall at opei.org>; "crusader" <crusader at nccw.net>
> > >Cc: <vwdiesel at audifans.com>
> > >Sent: Monday, December 30, 2002 2:11 PM
> > >Subject: Re: [Vwdiesel] Continuing brake Problems
> > >
> > >
> > > > I had a bad rear wheel cylinder on an A1 and it just wouldn't bleed.
> It
> > > > didn't leak
> > > > in the pressure mode, but it sucked in air when it retracted.  I bled
> the
> > > > damn thing
> > > > for hours until I talked to a buddy who suggested replacing it.  Cured
> it.
> > > >
> > > > Regards,
> > > >
> > > > Chris Boyer
> > > > San Diego
> > > >
> > > > At 10:59 AM 12/30/02 -0500, Nate Wall wrote:
> > > > >What type of VW? The A-2 Jettas have a load-sensing proportioning
> valve
> > > > >next to the rear axle beam that sometimes leaks fluid.
> > > > >
> > > > >--Nate
> > > > >
> > > > >crusader wrote:
> > > > >
> > > > > > This is a multi-part message in MIME format.
> > > > > > --
> > > > > > [ Picked text/plain from multipart/alternative ]
> > > > > > Thanks to all of you who responded to my question last week about
> my
> > > > > failing master cylinder.  I replaced it and bled all 4 wheels.
> However,
> > > > > on the rear driver side, the line bubbled and foamed no matter how
> much
> > >I
> > > > > bled.  After noticing that I had good "pedal" I gave up.
> > > > > >
> > > > > > Now, four days later, my pedal started to sink and after two more
> days
> > > > > I was back to pumping 3-4 times before I got any braking action.
> The
> > > > > difference now, is that after I pump it up, the pedal does not sink
> as
> > >before.
> > > > > >
> > > > > > I just bled that back wheel again and I continue to get foaming
> fluid
> > > > > out of the wheel cylinder.  Can the wheel cylinder be the problem?
> > > > > >
> > > > > > Thanks again,
> > > > > >
> > > > > > Kerry
> > > > > > --
> > > > > >
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