mk4 brake issues

rite had two brake hoses front replaced tried building up pressure(bleeding the brakes) couuldnt get none hour of messing about finally sorted them, now this out the way abs light came on o/s/f sensor so fixed it.
but now ive got a horrible droaning noise at low speed turning sounds like a pump whine if this mankes sense 3 places say its master cyclinder as me golfs on 130k but 2 people are thinking abs pump any one shed a light on this would help as im baffled now now the reason im saying brakes is because it also locks the pedal on now n kicks its back at you at every time it does this abs light pops up but still says front sensor even though i replaced this n the abs ring twice thinking it was faulty parts, im baffled now any body shed a light (this is when the groaning noise is there its kicking back n light kicks in )


SOMEBODY HELP

Sounds from how you describe it the groaning noise is the ABS system kicking in. Hence the kick back from the pedal and the light coming on.

When you bled the brake system did you bleed out the master cylinder aswell?

Also are all the ABS rings clean and the gaps to the sensor about 2-3mm?

solved it went to vw tecnics he put it on his lappy it has air in abs pump so booked in for wed so he can do full bleed of abs system