brake dancing:update

[Steve Meyer]

We figured out that my brake master cylinder is shot. I looked them up at autohausaz and they are exspensive! Awesome!
 
Steve
 

________________________________
 From: Mark Rosenkrantz <speedracer.mark at gmail.com>
To: Grant <glenahan at vfemail.net> 
Cc: Steve Meyer <quattroslm at yahoo.com>; Q- List <quattro at audifans.com> 
Sent: Wednesday, March 21, 2012 9:48 PM
Subject: Re: brake dancing
  

We've seen this before- heating of the master cylinder seems to be the theory... replacement of the master cures it.  I presume you've fully flushed with a vacuum or pressure bleeder and have gotten all of the air out of the system. 

Mark Rosenkrantz


On Wed, Mar 21, 2012 at 10:31 PM, Grant <glenahan at vfemail.net> wrote:

ABS or no? An ABS gremlin could easily do this.
>
>I dont know all the details, but i have heard MCs can do this. (yes, mine is a crud answer)
>
>Diagnosis 101 - do ALL the wheels lock? If so it MUST be a common component (ABS pump, MC, pedal, you)
>
>Grant
>
>
>On 3/21/2012 9:37 PM, Steve Meyer wrote:
>
>So, we're still trying to get the my '88 90q back on the road. We've done new pads, calipers, and lines but there seems to be an issue. The brakes lock up after driving it, then they free up...any ideas? I haven't driven it yet...my mechanic friend is doing the work for me and I'm trying to help him figure it out.
>> Thanks!
>>Steve
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