dont know if this will help you or not, but here goes.. 93 taurus.
brakes were working fine when cold and starting out to work, 20 minutes
later the car would heat up(?????) and the brakes would go to floor...
thought it was the master cylinder???? waited to get some prices on the
repair......... in the meantime i pulled the back brake drums off and
found that the right rear cylinder was pushing the metal part that is
suppose to push the shoe out was missig the shoe and going past it and
that is why the pedal would go to the floor,,, the fluid had to go
someplace and it was not leaking....., new drums and shoes on the rear
and problem was solved(it was the springs that weere heating up and not
pulling the shoes back to allow the cylinder the get the metal piece
back in and hold the fluid force.... kits for the springs for two wheels
at auto zone cost me about $5.00??? and it fixed the problem.. the metal
in the springs were ruined due to the heat(long use).....
brakes are pretty easy to fix, i would not mess with the balancer valve
on the brakes... the guy probably used cheap brake pads and never put
the anti squeel stuff on the back of the pads and shoes when he worked
on the car, thats why they are squeeling.... did he remove the slider
pins that hold the calipers on and clean off the caliers and where they
are attached and also the pins and put high temp. brake lubricant on the
pins???? i doubt it.... if our brakes lock up when no pressure is on
the pedal it could be a bad hose, sometime they fail in the hose and
block off the flow of fluid....
Figured out the pedal problem. I wasnt sure where to turn so I figured I'd
bleed them the old fashioned way. Open bleeder valve, push pedal down,
close valve, let pedal up. Jackpot. I'm not sure why the vacuum method
didn't work. Took it out for a drive, mashed the brakes and it stops
without the pedal to the boards.
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