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Brake pedal pressure question

Started by Dino, August 09, 2013, 11:39:09 AM

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Dino

August 09, 2013, 11:39:09 AM
Since I will be redoing the entire system, I'm not looking for a fix for this but I am curious why this is happening.  At all times the car will stop just fine but the pedal will feel different every time I press the brake pedal.  One minute it feels like a modern car pedal, the next it will go half way down to the floor and the next it'll go even further.  When I pump it rapidly it may or may not keep the pedal up...but only briefly.  Regardless of what the pedal is doing, the car stops the same and I never feel I have less fluid pressure.  I can find no leaks and the MC fluid is about 1/4" off the top edge sooooo wth is this all about?   :icon_smile_big:

To be on the safe side, I parked the car and won't be driving it until the brakes are done just in case something is ready to fail and wrap my sorry ass around a tree.  A small ding I caused myself is one thing, wrecking the car or worse is not on the agenda.
Extraordinary claims require extraordinary evidence.

ws23rt

#1
August 09, 2013, 01:25:04 PM
It sounds like the cup seals in the MC are tired and stiff.
Kinda like we get as we age :yesnod:

Dino

#2
August 09, 2013, 01:32:20 PM
 :smilielol:

Never thought of it like that.

I have a new master so if that's the issue then it'll be an easy fix.   :2thumbs:
Extraordinary claims require extraordinary evidence.

Musicman

#3
August 09, 2013, 02:44:25 PM
I agree, it sounds like MC is slipping. :yesnod:

Dino

#4
August 09, 2013, 02:58:03 PM
This is purely out of curiosity since the car won't be driving again until the brakes are done but what happens if you ignore something like this?  Does it get progressively worse or will the pedal just drop to the floor one day?
Extraordinary claims require extraordinary evidence.

John_Kunkel

#5
August 09, 2013, 03:21:08 PM

The MC is bypassing internally, when this happens only one system (front/rear) is functioning correctly...not something that should  to be ignored. Don't drive it !!!
Pardon me but my karma just ran over your dogma.

Musicman

#6
August 09, 2013, 05:42:52 PM
 :iagree: What John said... :yesnod:

ws23rt

#7
August 09, 2013, 06:56:54 PM
I agree as well. When you need the brakes you need them to be all they can be. :yesnod:
The same goes for our tired stiff selves  ::) The car will only do what you make it do. :icon_smile_wink:

Dino

#8
August 10, 2013, 08:05:01 AM
Not to worry, it's not being ignored.  The car is done for the season.  I don't take chances.

I'm leaving for vacation tomorrow, gone for a week + and when I come back the car is going on the stands to get a major overhaul, brakes included.   :yesnod: 

The next time she runs, there will be discs on that thing.   :2thumbs:
Extraordinary claims require extraordinary evidence.
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