Brake pedal goes to floor

[John Larson]

----- Original Message ----- 
From: "SJ" <syljay at optonline.net>
To: <quattro at audifans.com>
Cc: <j.d.larson at verizon.net>
Sent: Thursday, May 06, 2004 6:09 AM
Subject: Re: Brake pedal goes to floor.


Yes, they DO
> > fail like that, $150 is a VERY good price (since dealer list is $404),
and
> > my shop cost is $178.85.  Be aware there are THREE different master
> > cylinders (depending on how your car is equipped), and you need to be
sure
> > you get the right one.
>

>
> What is the failure mode for the sudden collapse of  the MC?


There are 2 common M/C failure modes in our cars.  In one, the brake system
pressurizes all by itsownself, causing the car to come to a stop and/or
requiring copious amounts of power to overcome the drag.  In the other, the
pedal goes suddenly to the floor and you can't stop at all.  This mode may
be intermittent, but it'll become increasingly frequent until you finally
have to use a large fixed objet to halt your forward motion.   HTH, John
>
>
> SJ
> 85 Dodge PU, D-250, 318, auto
> 85 Audi 4k - - sold but still on the road
> 88 Audi 5kq
> 90 Audi 100q
>
>
>