Brakes don't feel right after bleeding

[alstarz88]

Hi

I have recently replaced my abs pump during a 2 year project on my car during this time the rear Calipers we removed. I also changed the booster and master servo but the pedal feels very weird. At first it feels over boosted or like there is air in it then once the pedal has travelled through that it then feels like it isn't boosted at all.

The Car is standard ABS 4 Channel no TC or PSM/PASM.

When car isn't running pedal is solid as you would expect.

The Booster part numbers were the same

Any ideas

[Loren]

Did you bleed the booster/ABS/PSM using a PST2 or PIWIS tester?

You need to do this if the system has been opened other than for normal bleeding.

The PST2 or PIWIS will allow you to tun the ABS pump to bleed the full system.

[alstarz88]

I was under the impression that you only needed to bleed with pst2 or piwis if you have TC or PSM and I don't

I have only bleed the brakes with a power bleeder and pumped the pedal Not with PST2

Will that resolve the issue

Regards

Ross

[JFP in PA]

I was under the impression that you only needed to bleed with pst2 or piwis if you have TC or PSM and I don't

I have only bleed the brakes with a power bleeder and pumped the pedal Not with PST2

Will that resolve the issue

Regards

Ross

If you have ABS, you need the PST II/PIWIS because you probably have gotten air into the ABS control system with the master cylinder swap out as the Motive system forces the air downward into the system...........

Edited September 8, 2011 by JFP in PA