Vauxhall Astra brake pedal hard won’t press diwn

On some models the vacuum pump was part of the alternator , Check belt is not slipping giving you screeching noise and pump is operating as is needed for brake servo .

Hi power steering has went now and car doesent start like it’s out of battery like a clicking noise looks like belt is on was spinning before now clicking like starter not working brakes still can’t press dow and no power steering and not starting trying to but clicking

Could be the battery flat and starter solenoid or relay clicking because of this . If alternator belt was slipping and causing the screeching it would not be charging right . Test battery voltage and try jump start , charge or replace as needed

Hi put another working battery in started but but brakes are still hard can’t push down I’m thinking alternator as don’t think it’s charging battery as it’s going flat do you think should Change alternator and belt thanks in advance

Two min check to test if alternator charging or not , rather than guessing Assuming that year does not have EPAS . You could scan it for fault codes

Hi I got a battery and alt tester fully charged battery when I connected with car started nothing lit on on it i used the tester on 2 other cars and lights came on saying battery and alternator ok but on Astra nothing happens so I disconnected battery car just died started again took negative off car stoped again sounds like faulty alternator I think but would that make brakes go hard I also put a battery with little charge on it got started when I was turning steering when all the lights on dash were flickering then battery ran out so could bad alternator makes brakes not work as brake vacuum pump is on it

Pulling a battery terminal when engine running is a bad thing to do ,, can screw electrics .