Brake Problem - BMW Forum

e30bmwes · 01-31-2005, 03:35 PM

ok so my brakes are not working and im not sure why the problem is something with pressure caues there is no pressure on when i push on the brakes it feels like im pushing nothing and im pretty sure it is not the brake fluid

if you have any idea and can help me out then
thanx oo=[][]=00

e30fanm3 · 01-31-2005, 06:48 PM

it would help to know the year and model and if you have found a puddle of brake fluid or not, if not then it could be your brake master cylinder, sometimes they leak inside of the brake booster and you wouldnt know that it was leaking

Kowalski · 01-31-2005, 08:10 PM

Quote:

Originally posted by e30fanm3@Jan 31 2005, 04:48 PM
it would help to know the year and model and if you have found a puddle of brake fluid or not, if not then it could be your brake master cylinder, sometimes they leak inside of the brake booster and you wouldnt know that it was leaking

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check your pads, check your brake fluid leve. you also might have a cracked brake line, or air in your line. brake fluid doesn't compress where as air does, so if you have air in your line it would cause spongy brakes, and loss in braking power. so bleed your brakes, and then if none of those work, then check your master cylinder. and if your fuild is really low then you will have to bleed your brakes because air has most likley gotten into them with low fluid.

Putin · 02-18-2005, 07:04 PM

I'm having a similar problem with my 81 323i. The car has been standing idle for about 2 months while I was abroad, it needed a jump start when I got home but was driving fine yesterday. Coming back from the supermarket today and the brakes gave up on me!

They work for about the first inch of movement then I lose pressure on the pedal. Like you say it feels like I'm not pressing on anything and the car does not slow. The only way I could stop it was by repeatedly pumping the first inch of the pedal.

The fluid resevoir is full, I havent seen any leaks. Would I get this behaviour from air in the lines? Surely that would just make it spongy with the brakes kicking in as the pedal reaches the floor?

guywithblack88e30 · 02-18-2005, 08:46 PM

sounds like master cylinder same exact thing happend on my 83 volvo turbo there completly different cars but it doesn't hurt to change it. i change it on that car easy on driverside against firewall where brake fluid goes

Putin · 02-20-2005, 04:07 PM

Yeah, I've had a look around on other forums and that seems to be the consensus. It doesn't look to hard to change so I'll give it a shot. The vaccum servo looks pretty rusty and the brakes have always been hard to apply (only had the car 6 months) so I'll swap that while I'm at it. Thanks alot!
Now to phone BMW and see how much this is gonna hurt me