REAL BAD BRAKE FADE need help bc its the dd

[SoopaGhetto]

ok, it happend to me twice and its starting to freak me out.

When i go to press the break, it just seems to give out and i squish it to the floor with no stop; then when i quickly release and apply pressure again the brakes seem fine and i can stop. this happend to me twice today almost resulting in a collision.

I checked the fluid and all seems fine and at the level i had it when i changed the tranny out. there appears to be no leaks and the booster to manifold like in vacuum tight. it only happened today.

Any ideas, or does anyone know why???

-BB
-BMC
-NEED NEW BRAKES

just some ideas...

[JGood]

Well, to start eliminating things, I would say it's not vacuum, or it wouldn't go to the floor, it would just be hard to push.

Does it have ABS?

[MikeE30325i]

is the master cylinder going bad?

[nando]

in all likelyness your MC is going bad.

[jlevie]

That or you are loosing a wheel cylinder.

[SoopaGhetto]

no its not the abs model.

so most think its the mc? how would i check that?? also i havent bled the brakes in a while, but would not bleeding them cause this to happen??

[Mike325]

I vote master cylinder. This is their common going out symptom. I assume that really dirty old nasty fluid could cause the ports to get clogged at random times causing a problem.

Flush it out and drive carfull for a while to see if it fixes it.

[SoopaGhetto]

damn, would it be wise to get a new one or rebuilt one? and who has the better prices?

[HST]

I had the same issue some time ago. It is the master cylinder. As for getting a rebuilt one, it is your brakes, kinda important, so I'd get a new one. I'm sure that others will disagree. As for price, BMA or fap99.

[SoopaGhetto]

anyone know the difficulty of removal/installation? im bouts to order the replacement part. it looks fairly strait forward:

-Remove the brake lines from the MC
-Two nuts to remove the MC from the BB
-Replace old MC with new MC
-Reverse order
-Bleed

is there anything else that would need attention during this process?

[browntown]

new nyloc nuts to booster, new quality fluid, pressure bleeder if you don't already have one spend the money, you'll love the thing.

[PiercedE30]

have tried bleeding the brakes? (didn't read the whole thread)

[llll1l1ll]

When you get a new MC, get the larger one that comes out of the 7 series. Makes your brakes feel nice and tight.

[SoopaGhetto]

ok, i got the mc and all but is there supposed to be a specific order when bleeding? Lots of my friends (car fanatics) say that brakes are bled in a specified order; is this true to the e30?? if so do you know the order and the reason as to why? just curious...

[browntown]

always bleed hydraulics starting from the furthest from reservoir to closest