Brakes not working

Good morning,

I would check the system for any leaks. It sounds like you either broke a brake line or the master cylinder has failed and needs to be replaced.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

You will need to bench bleed the master cylinder before installing it.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

You will have to have an advanced scan tool to bleed the system as the ABS has to be bled as part of the bleeding process.


Roy

Well, reserve is full no leaks I can see. I look at each wheel no signs of brake fluid and master cylinder is clean.. As for ABS mod.. Obd2 scanner said lost com to ABS 1 time but no ABS light has never been on, and pads are good like 50% left. Pedal just started to get hard then pedal would lock about half way down but only apply about 35% braking power then after 3 days I hit brakes it locked at 25% and then I felt a "pop" and went to floor with 0% braking?

You have a failed master cylinder. The internal seals have failed.

Roy

Thank you. Roy I will look in to it, also if i do replace it then as for bleeding I have a scan tool that does ABS and the car has a auto bleed built in with a obd2 will that be adequate or should I do it old school and have a friend just pump and hold as I bleed each wheel starting from passenger rear to driver rear to passenger front to driver front?

Okay, you will bleed the ABS module first. Then you will bleed using a second person for the rest of the system

You are welcome.

Always glad to help.

Roy

Roy, please help. I was removing and replacing master cylinder and both bolts removed studs half way now i have got one off by using a 6mm sock it on stud and 13 on nut but number 2 is all most impossible to move on stud??

Can you please upload some pictures of what you see?

Roy