Advice on brake problem...
Posted: Mon Mar 25, 2002 11:17 am
Hi all. Hope someone can assist in the diagnosis of this issue.
Target Vehicle:
1993 Subaru Legacy LS AWD Wagon
I have been having the following problem with my brakes.
_____
Part A- Description of the problem - Mostly I'm concerned about the mush
pedal
A) my brake pedal seems quite mushy. BUT, if I quickly pump once, then
pump again and hold, it engages much higher and is as firm as ever. What
gives batman? Is this a bad vacuum booster? A bad master cylinder?
B) sometimes, when I apply the brake at a slow-normal speed (and DON'T do
the double-pump thing) in a gradual stopping situation (where my foot goes
unusually close to the floor), during the last 20 feet or so I hear a faint
grinding noise. I kind of figure the grinding noise is a brake shoe
wearking low, but it only occasionally makes the noise (usually after
braking a lot- Pittsburgh is all hills). I'm going to pull the wheel to
check, but if you have anything to add, lemme know.
C) Just this morning, and I don't know if it is related or not, I started
the car and drove around and there was a faint 'beep/buzzing' sound from
what might have been behind the dashboard. It sounded like it was some
type of electronic buzzing. No idiot lights were on and there were no
other problems.
_____
Part B- what I have done /checked:
There is adequate fliud in the reservoir (right below -max-) and the
fluid looks clear.
I bled the front brakes a good bit (maybe 1/2 the total volume) but no
bubbles came out. Some kind of K-Y jellish looking spooge did come out
when I checked the catch tube from the front right line.
When I checked the fluid reservoir, the weird black rubber boot that
usually is recessed in the brake reservoir cap was 3/4 sucked out of its
recessed position and had apparently been sitting in fluid at some point.
The front pads (where the sound is coming from) are fine, though the
anti-squeal shims are not centered correctly on the pads. I don't think
this is the problem though, as there is nowhere for them to touch anything
rotating.
All assistance is appreciated!
Thanks,
Chris
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Target Vehicle:
1993 Subaru Legacy LS AWD Wagon
I have been having the following problem with my brakes.
_____
Part A- Description of the problem - Mostly I'm concerned about the mush
pedal
A) my brake pedal seems quite mushy. BUT, if I quickly pump once, then
pump again and hold, it engages much higher and is as firm as ever. What
gives batman? Is this a bad vacuum booster? A bad master cylinder?
B) sometimes, when I apply the brake at a slow-normal speed (and DON'T do
the double-pump thing) in a gradual stopping situation (where my foot goes
unusually close to the floor), during the last 20 feet or so I hear a faint
grinding noise. I kind of figure the grinding noise is a brake shoe
wearking low, but it only occasionally makes the noise (usually after
braking a lot- Pittsburgh is all hills). I'm going to pull the wheel to
check, but if you have anything to add, lemme know.
C) Just this morning, and I don't know if it is related or not, I started
the car and drove around and there was a faint 'beep/buzzing' sound from
what might have been behind the dashboard. It sounded like it was some
type of electronic buzzing. No idiot lights were on and there were no
other problems.
_____
Part B- what I have done /checked:
There is adequate fliud in the reservoir (right below -max-) and the
fluid looks clear.
I bled the front brakes a good bit (maybe 1/2 the total volume) but no
bubbles came out. Some kind of K-Y jellish looking spooge did come out
when I checked the catch tube from the front right line.
When I checked the fluid reservoir, the weird black rubber boot that
usually is recessed in the brake reservoir cap was 3/4 sucked out of its
recessed position and had apparently been sitting in fluid at some point.
The front pads (where the sound is coming from) are fine, though the
anti-squeal shims are not centered correctly on the pads. I don't think
this is the problem though, as there is nowhere for them to touch anything
rotating.
All assistance is appreciated!
Thanks,
Chris
------------------------ ---------------------~-->
Access Your PC from Anywhere
Full setup in 2 minutes! - Free Download
http://us.click.yahoo.com/pmECdA/2XkDAA ... /XoTolB/TM
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To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com