Just finished a complete re-piping of the car, both rear calipers, new pressure control valve for the rear brakes, Russell's Modulator upgrade with new reservior and a new accumulator.
Bled the brakes using the RAVE procedure and all seemed well.
I had a "pressure switch fault" show yesterday on the Nanocom after dash warning lights, which I've put down to driving off the drive before the ABS system was up to pressure fully and having to brake a few times on our tight housing estate, dropping the pressure below switch limits.
I've done the pressure tests and the accumulator is filling in thirty seconds give or take a second.
With the ign on, the pressure is dropping to pump run again in between four and a half to five minutes. Not constantly the same time, once actually went over six seconds before pump run.
I'm taking it that my pressure relief switch is okay but I may have a slightly worn pump or pump non return valve.
Sods law, going away with the caravan next week but luckily I have a second hand pump and pressure switch which I'm taking with me just in case.
I'm thinking that the pump should be okay for a while, what do you guys think ?

Whats Russells modulator upgrade?

Aragorn wrote:

Whats Russells modulator upgrade?

It's the replacement of the two plastic disks in the modulator with stainless steel. I believe that the 99 onwards modulators had them as standard.
If the disks fail a complete brake failure can happen.
A clicking on brake application can indicate that one of the disks if starting to fail
If you google Brake modulator BMR kit there's a lot of info.

ah yes i know what you mean now :)