2001 Celsior 430 brake problems

[Gmick]

Everything was working fine until I changed  all the brake pads. Did not disconnect any brake pipes, just pushed pistons back into calipers.  Now with the engine running the pedal goes half way down (brakes work), then slowly sinks to floor. When the engine is not running they feel fine. I have blead & better blead in every combination. A garage has pressure & suction blead. The master cylinder has been inspected & tested,  Bench blead & blead on car when refitted. ABS module has been replaced, same problem remains. There are no leaks.

Have drove on dirt track doing hard braking to kick in abs.

Got Smartstorm computer program to do ABS brake bleed function. The function was not available for this model of vehicle.. No faults were active, although the red warning triangle is illuminated on the dashboard.

Took vehicle to Lexus, they use the same program & could not help.

Can anyone shed any light on the matter.

thanks in advance. Graham

[steve2006]

Hello Graham and welcome to the LOC.

You have the same car as me then.

When you pushed the pistons back did you first open the calliper bleed nipple to allow the excess  brake fluid to leave from there?

 

 

[Gmick]

Thanks Steve , it's not really my problem, I'm the go between for dad. But no, the nipples were not opened when pistons pushed back.