help no brakes

osullivant · Feb 20th, 2019, 23:32

Changed the rear calipers, bled the full system, changed the fluid, spongy pedal goes all the way to the floor...

I gather this could be the master cylinder... if so should I be able to see the leakage or can it leak internally... many many codes coming up...all todo with BCM and Anti skid etc///

cheshired5 · Feb 21st, 2019, 09:46

Check and double check that the caliper spring has been installed correctly.

osullivant · Feb 21st, 2019, 11:55

Quote:

Originally Posted by cheshired5

Check and double check that the caliper spring has been installed correctly.

Will do.. not sure how this could lead to these symptoms,,?

cheshired5 · Feb 21st, 2019, 13:36

Quote:

Originally Posted by osullivant

not sure how this could lead to these symptoms,,?

An incorrectly fitted spring can reduce resistance in the caliper and allow excessive pedal travel.
Quite a common and often mentioned problem on here.

osullivant · Feb 21st, 2019, 22:35

Springs all look fine.. swopped the master cylinder. Still not quiet right but much better... I'll bleed the 4 corners again tomorrow.

owenfackrell · Feb 22nd, 2019, 11:08

Some cars have a procedure to bleed the abs pump. Not sure if the XC90 does or not.

Feb 20th, 2019, 23:32	#1
osullivant Senior Member Last Online: Mar 25th, 2024 23:05 Join Date: Jul 2011 Location: cork	help no brakes Changed the rear calipers, bled the full system, changed the fluid, spongy pedal goes all the way to the floor... I gather this could be the master cylinder... if so should I be able to see the leakage or can it leak internally... many many codes coming up...all todo with BCM and Anti skid etc///

Feb 21st, 2019, 09:46	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	Check and double check that the caliper spring has been installed correctly. __________________ 2002 S60 SE D5 Manual 209000 miles

Feb 21st, 2019, 22:35	#5
osullivant Senior Member Last Online: Mar 25th, 2024 23:05 Join Date: Jul 2011 Location: cork	Springs all look fine.. swopped the master cylinder. Still not quiet right but much better... I'll bleed the 4 corners again tomorrow.

Feb 22nd, 2019, 11:08	#6
owenfackrell Premier Member Last Online: Feb 4th, 2024 19:04 Join Date: Dec 2009 Location: southampton	Some cars have a procedure to bleed the abs pump. Not sure if the XC90 does or not.

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