slow4dr

I just got the front brakes done on a 94 ex civic. 2 days later the brake pedal sinks to the floor. what could be the problem? i doubt its the master cylinder. do you guys think it has to do anything w/ the abs system. any ideas would help, thanks.

drevinder

did u do ur brakes if u did ___did u take any brake lines off if u did then there is an air in ur lines if not it's ur master cylender

HotRodDelSol

If a shop did it, give them a call because they screwed something up. Probably didn't bleed the lines or they left a bleeder valve open.

egNYC

does it sink when you press it or when you stopped then it sinks? If is sinks when you are pressing to stop, i am think air in system. if it sinks after stopping then it could be MC needs replacment.

slow4dr

it sinks at all times. and its sinks pretty fast

CivicEKCP

You have a busted line or a lot of air in the system. Do you see any brake fluid spilling out when after it goes to the floor? Also what did you have done on your front brakes.

Solracer

Does the Brake pedal get firmer if you pump it?
Did you/they bleed the brakes after they were done?

slow4dr

they did no replace the brake fluid so i dont think they bleeded the system. all i had changed was the pads. the pedal does not get firmer as i pump it.

Status Sean

yea i had the same problem check all your lines then if nothin go to the master cylinder

slow4dr

my mechanic thought it was the proportioning valve which works together w/ the abs system because the front right and rear left have resistance but the others dont. the dealership said its the master cylinder. master cylinder usually gives signs its going out though. i dont know. i think i am going to take honda's word. what do you guys think.


tanks all