MkIII brakes dont work

907mge · 11-28-2010, 01:39 AM

Start with the longest line first and so on.

Green7mgte · 11-28-2010, 03:13 PM

were the brakes recently changed on the car before you purchased it?

what happends on older vehicales (happened to mine)
is when you change the brakes the peddle goes down to the floor. the peddle fallowing the same range of motion, over time anything beyond that gets dried out. so your basically overextending the piston in the master cylinder and rupturing one of those o rings. happens, can be rebuilt. but buying a new one for 60 bucks, why go through the hassle. Mc w/ ABS

good technique to put a block of wood behind the peddle so it doesn't hit the floor. but if you replace your master cylinder this shouldn't become a problem again for another 20 years.

xAimz · 11-28-2010, 03:40 PM

I have no idea, the brakes are crossed, are those stock?
like the car WILL stop, but first you gotta push the pedal in, then pull out then pump again for them to work.

<3

Green7mgte · 11-29-2010, 01:13 AM

the brakes are crossed??.. are what stock??

first things first is to bleed the brakes. then see if its the mc. dedicate an hour and you can get it solved.

CanadianBak'inSupra · 11-29-2010, 01:53 PM

are you losing fluid??
sounds like a leak if the pedal doe's not come back on its own.

when my master went i could build up pressure by pumping the pedal and it was enough to stop, the O-rings inside the cylinder went bad overtime.

this is like day 4 of your post its time to bleed the freakin brakes!!!
thus narrowing down your search for what is wrong...

xAimz · 11-30-2010, 12:42 AM

Ive been bleeding the brakes for 2 days now... at first BLACK fluid was comming out with dirt in it..... (confused) kept doing it, and it started to clear up, ima do it tomorrow some more to, but the pedal is still spongy and i have to pump twice to stop. so ima keep bleeding till the fluid is clear. and then im going to replace the master cylinder

btwilson86 · 11-30-2010, 04:38 AM

Good idea. Even if the bleeding doesn't fix it, new brake fluid is definitely better than old

11-28-2010, 03:13 PM	#2
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	were the brakes recently changed on the car before you purchased it? what happends on older vehicales (happened to mine) is when you change the brakes the peddle goes down to the floor. the peddle fallowing the same range of motion, over time anything beyond that gets dried out. so your basically overextending the piston in the master cylinder and rupturing one of those o rings. happens, can be rebuilt. but buying a new one for 60 bucks, why go through the hassle. Mc w/ ABS good technique to put a block of wood behind the peddle so it doesn't hit the floor. but if you replace your master cylinder this shouldn't become a problem again for another 20 years. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : Last edited by Green7mgte; 11-28-2010 at 03:17 PM.

11-29-2010, 01:13 AM	#4
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	the brakes are crossed??.. are what stock?? first things first is to bleed the brakes. then see if its the mc. dedicate an hour and you can get it solved. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

11-29-2010, 01:53 PM	#5
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	are you losing fluid?? sounds like a leak if the pedal doe's not come back on its own. when my master went i could build up pressure by pumping the pedal and it was enough to stop, the O-rings inside the cylinder went bad overtime. this is like day 4 of your post its time to bleed the freakin brakes!!! thus narrowing down your search for what is wrong... __________________ 1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.

11-30-2010, 04:38 AM	#7
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Good idea. Even if the bleeding doesn't fix it, new brake fluid is definitely better than old __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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11-28-2010, 01:39 AM	#1
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	Start with the longest line first and so on.

11-28-2010, 03:40 PM	#3
xAimz Intake Join Date: Nov 2010 Location: florida Posts: 30	I have no idea, the brakes are crossed, are those stock? like the car WILL stop, but first you gotta push the pedal in, then pull out then pump again for them to work. <3

11-30-2010, 12:42 AM	#6
xAimz Intake Join Date: Nov 2010 Location: florida Posts: 30	Ive been bleeding the brakes for 2 days now... at first BLACK fluid was comming out with dirt in it..... (confused) kept doing it, and it started to clear up, ima do it tomorrow some more to, but the pedal is still spongy and i have to pump twice to stop. so ima keep bleeding till the fluid is clear. and then im going to replace the master cylinder