Re: Brake pressure build-up, advice needed.

[RC Ringlien <rringlie@isd.net>]

Steinbru@VNET.IBM.COM wrote:
> 
> My recently acquired '87 CGT really likes to go.  Now, occasionally, it
> has taken to stopping on it's own!  It seems that pressure builds up in
> the brake lines.  All four wheels get braked.  If the car sits, the
> pressure goes away after 20min to an couple of hours.  Sometimes the
> pedal travel is increased after this.  Friday I relieved the pressure by
> loosening the four brake line fitting at the MC, and the pedal relaxed
> somewhat.  Pedal travel was normal, and the brakes were not dragging.
> What could be causing this?  --Gary
Gary--did you ever solve your dragging brake problem?.  I have a
similiar problem on my 89 200T, which is heat related.  All brakes start
dragging.  Some have said that a bad bomb can cause this.  My brake
warning light blinks when I jab the brakes but have not had a lack of
boost except when they start dragging, then the pedal gets hard. 
Another lister, Mr. Russell, also had the same problem.  As I had a
Netscape crash, I lost his and other addresses. 
 I thought the bomb regulates boost supply and not brake line pressure,
or does it somehow mess up your servo if the relief valve leaks?  I
recently flushed my brake fluid and have only had the system real hot
once, when it seemed OK.  Not confident htis fixed it.  Any input would
be appreciated. 
RC Ringlien
rringlie@isd.net