Strange Noise/Vibration Under Braking

[team juice]

Hi everyone,

Hope someone can shed light on this !!

I have a 2003 Octavia vRS, and I have recently encountered problems whilst under gentle braking, when pulling up etc.

Firstly, the ABS and Traction Control warning lights come on randomly whilst just driving.

Secondly, I could be braking gently as if pulling up at a junction or traffic lights, then under braking there is quite a violent thudding sensation accompanied by a loud clunking noise. (the thudding sensation seems very harsh for ABS!)

This can be quite erratic, and can be fine for several days, then suddenly returns.

I have had ABS sensors replaced and new grooved discs with green stuff pads fitted but I am still experiencing this problem. Any ideas ?

Regards,

team JUICE

[KenONeill]

Nudge.

[cheezemonkhai]

You haven't changed the brake fluid and totally drained the system leaving air in the ABS unit have you?

[team juice]

???

[team juice]

... erm, no.

Everything in order re brake fluid.

Diagnostic check isn't showing anything. It's doin my head in !!

[KenONeill]

:ndge:

I suspect it's brake electronics, a fuelling issue, or, given the Green Stuff pads, warped discs. I know Awesome will suppost the existence of the last possibility.

[Bodge]

All this electrical crap is great when your cars new! But then it ****es on your chips.

It's tempting to pull it all out when it keeps screwing up.

Erm i'm not sure what to say, sounds like youve tried everything! Replace/check everything even mildly connected to the brake system! Or go see a few specialists for their thoughts.

Ive basically been useless. Ill leave now!