[s-cars] soft break pedal

Nicholas applen at gmail.com
Mon Nov 28 15:37:33 PST 2011


Reservoir level hasn't changed and I see no signs of leaking fluid in
the obvious places, but haven't traced the lines from end-to-end.

I'll try the bleeding again with the proper sequence and also check
for bulging lines (I'm assuming the only flexible/bulge-able sections
are those near the calipers for steering and suspension
articulation...correct?).

While bleeding I had positive pressure the whole time (even before I
started pressing the pedal)... is that normal? Do I need a vacum pump
to bleed properly or is the hose/jar full of fluid method sufficient?

Lastly, is the consensus that the bomb the most likely culprit for the
intermittent brake light? Is there anything else electrically on the
fluid side that could be sending that signal? It sounds like I should
go ahead and preemptively tackle that regardless of my soft pedal...?

Thanks lots,
-Nick

On Sat, Nov 26, 2011 at 4:18 PM,  <racingiron at comcast.net> wrote:
> Soft pedal does usually indicate problems on the brake fluid side... either
> air in the system or possibly a bad line that bulges under pressure.  I
> presume you've checked to make sure you're not losing fluid somewhere.
> Closely inspect the flexible lines as someone applies pressure to the
> pedal.  AFAIK, the only part of the brake fluid side that will activate the
> idiot light is the level sensor in the reservoir.  You can unplug the
> connector from the sensor (may need to jumper it--not sure if it's normally
> open or closed) to see if that gets rid of the light.  I suspect the light
> is from the boost system due to a tired bomb, but unrelated to your pedal
> pressure issue.  Oh BTW, brake bleeding is usually done by starting at the
> furthest caliper from the master cylinder and working forward (i.e., RR, LR,
> RF, LF).
>
> Eric R.
> '86 urq
> '92 urS
> '93 urS
>


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