Soft brake pedal problem! ABS? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13q · 03-21-2016, 02:33 PM

So I have a really soft/spongy brake pedal.

I have changed the master cylinder, calipers, pads, lines, discs etc and still the same problem!

Im quite convinced the ABS module has air in it, since ABS doesnt even work and the car always locks up.

The booster is healthy and working well as I have tested it, even if it was faulty the pedal would be rock hard and not soft.

Anyways, when I pump the brake pedal it gets no better. Its a terrible feel.

Any ideas guys? does the ABS module need to be bleed seperately?

jedi03 · 03-21-2016, 03:17 PM

Abs usually has a special bleeding procedure...like pull the fuse or bleed with car running something hokey like that...soft pedal usually means air or water in the line...what's your engagement point? Check that against the fsm or Haines and see what it looks like!

03-21-2016, 02:33 PM	#1
s13q Leaky Injector Join Date: Sep 2012 Location: Sydney Posts: 91 Trader Rating: (0) Feedback Score: 0 reviews	Soft brake pedal problem! ABS? So I have a really soft/spongy brake pedal. I have changed the master cylinder, calipers, pads, lines, discs etc and still the same problem! Im quite convinced the ABS module has air in it, since ABS doesnt even work and the car always locks up. The booster is healthy and working well as I have tested it, even if it was faulty the pedal would be rock hard and not soft. Anyways, when I pump the brake pedal it gets no better. Its a terrible feel. Any ideas guys? does the ABS module need to be bleed seperately?

03-21-2016, 03:17 PM	#2
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,842 Trader Rating: (8) Feedback Score: 8 reviews	Abs usually has a special bleeding procedure...like pull the fuse or bleed with car running something hokey like that...soft pedal usually means air or water in the line...what's your engagement point? Check that against the fsm or Haines and see what it looks like!