Problem with brakes, need some help.

[Konstantin Bogach]

George,

I did pressure bleeding.  I don't know what else I can do to get the air out,
if it is there.  No, I did not run out of  fluid in the reservoir, MC did not
suck air in.  I installed new rotors all around and this pulsating feels when
car is not moving.  When it is moving I don't feel pulsation.  Maybe because I
am distracted by other things.

Thanks.
Konstantin.

George Harris wrote:

> Hey Konstantin:
>
> I have a bad bomb and that is not the symptom. A bad bomb causes a hard
> pedal. I think you have not finished bleeding the system. Yes, I think
> the ABS light is trying to tell you something, though I'm not sure what :-(
>
> When the pedal is still soft after a brake job I would suspect improper
> bleeding. Just out of curiosity, did you check the rotor run out? What I
> mean is, is it possible that a rotor wobbles enough to shove the pads
> far enough away from the rotor at centre that it takes a full pump to
> take up the slack? When you did the original bleeding is there any
> chance that the master cylinder ran out of brake fluid and you sucked
> air into the lines?
>
> Just some food for thought.
> Good luck
> George
>
> Konstantin Bogach wrote:
> > Hi listers.
> >
> > I finished complete brake system overhaul, bleeded but brakes are soft
> > and car is reluctant to stop. Bomb  is  dead.
> > With engine running pedal is pulsating as it goes down.  Bad bomb causes
> > it, according to some posts in archives.
> > After hard braking rear disks are dead cold.  I aslo want to mention
> > that ABS off light stays on when I try to switch it off (relay clicks).
> > But I believe it has nothing to do with soft brakes but ... just in
> > case.
> >
> > My question is: can just bad bomb cause mentioned symptoms?
> >
> > My second 200tq had also bad bomb before I changed it but brakes were ok
> > - not soft, no pulsation and brakes engaged ok.  This fact causes some
> > confusion in my head.
> >
> > Thank you.
> > Konstantin Bogach.
> > 200tq '89
> > 200tqa '89
> > urS4 '93
> >
> >
> >