[V8] bad bomb, master cylinder or ?

[Korn, Bob]

Did you pull, clean and reseat all the sensors?  This cured my lock up
issue.
Bob
 

-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
Of gbmarc at cox.net
Sent: Friday, October 16, 2009 2:49 PM
To: v8 at audifans.com
Cc: v8-request at audifans.com
Subject: Re: [V8] bad bomb, master cylinder or ?

I have the exact same symptoms you describe with the brake being hard at
the top of the pedal and then sinking down 2 inches before it engages.
It happens usually after the car is first started and for the first
couple of brake pushes.
I replaced the master cylinder, and it had no affect whatsoever!!
It almost appears to be ABS related, because I think I can hear the ABS
engaging with that grinding pulsing noise very, very slightly on the
first trip down my driveway in the morning.
My bomb was replaced about 12,000 miles ago.

I also have the differential locking up at slow speed issue, with the
'ABS-Off' light coming on sporadically.  I have replaced one ABS sensor,
(the one with the higher resistance, with also absolutely no affect.

Maybe if I replace the whole car, it will have an affect!!!  :)

mark.

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