[Rovernet] Pulsating brake pedal

[Scruggs Family]

And... you are more likely to first feel a warped rotor through the steering
wheel.  I'll wager the pulsing does not happen with the engine is off and
the only 'active' component in the system between the pedal and the engine
is the vacuum servo.  Also you can switch the engine off while moving... be
smart about it... and see if the pulsing remains or is absent.  (Yes, I've
done that to evaluate the contribution of the vacuum servo and take my word
the difference is huge.)  If possible swap another vacuum unit to see if
there is a change in the symptom.  As others have said it is the likely
culprit. 

Gross Scruggs
Annapolis MD


-----Original Message-----
From: Rovernet [mailto:rovernet-bounces at rovernet.org] On Behalf Of Steven
Dibdin via Rovernet
Sent: Monday, August 4, 2014 5:12 PM
To: Dermot Harvey; Rovernet
Subject: Re: [Rovernet] Pulsating brake pedal

But this is happening when the car is stationary!


On Mon, Aug 4, 2014 at 5:10 PM, Dermot Harvey via Rovernet <
rovernet at rovernet.org> wrote:

> Likewise!
>
> Dermot Harvey
>
>
> On Aug 4, 2014, at 12:29 PM, Partviking via Rovernet wrote:
>
> > Thanks Steve,
> >
> >
> > I didn't read the original email properly and now see it's whilst the
> vehicle is stationary.
> >
> >
> > Regards
> >
> > Alan
> >
> >
> > ________________________________
> > From: Steven Dibdin via Rovernet <rovernet at rovernet.org>
> > To: Partviking <lingfield51 at btopenworld.com>; Rovernet <
> rovernet at rovernet.org>
> > Cc: Roy Babiuk <rababiuk at telusplanet.net>
> > Sent: Monday, 4 August 2014, 17:08
> > Subject: Re: [Rovernet] Pulsating brake pedal
> >
> >
> > Hi Alan,
> >
> > Warped discs can cause pulsation, but only when the car is moving. Then
> it
> > will be in time with wheel speed. If the car is at rest it is generally
> > related to a vacuum leak.
> >
> >
> > Regards,
> >
> > Steven
> >
> >
> > On Mon, Aug 4, 2014 at 11:58 AM, Partviking via Rovernet <
> > rovernet at rovernet.org> wrote:
> >
> >>
> >>
> >> Roy
> >>
> >>
> >> I believe warped discs can give a similar sensation as well.
> >>
> >>
> >> Regards
> >>
> >> Alan
> >>
> >> ________________________________
> >>   From: Roy Babiuk via Rovernet <rovernet at rovernet.org>
> >> To: "rovernet at rovernet.org" <rovernet at rovernet.org>
> >> Sent: Monday, 4 August 2014, 16:15
> >> Subject: [Rovernet] Pulsating brake pedal
> >>
> >>
> >> When holding brake pedal down on my 2000 TC for a short period, like at
> a
> >> stop light, thr pedal will pulsate. Is this normal for the dual circuit
> >> system?
> >> Roy
> >>
> >> Sent from my iPhone
> >> _______________________________________________
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