Replaced Master cylinder and pedal still goes to floor HELP

Why did you need to replace the master cylinder? Was it to solve a low-pedal problem or did this problem just start after the master cylinder was replaced? Do you have disc or drum rear brakes? Does the car have anti-lock brakes?

Here is a guide to help us see whats going on it sounds like you have air stuck in the ABS unit

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

Please run down this guide and report back

Cheers

"When bleeding the master cylinder it went dry that is why we replaced it"

Why were you bleeding it? What was the original problem that started all of this?

Running the master cylinder empty is no cause to replace it unless it was damaged by running the pedal over half way to the floor. You simply refill it, and if the lines still have fluid in them, you can just stroke the pedal lightly to work the air out of the lines next to the ports. No need to bleed at the wheels.

The biggest concern at this point is you likely need a scanner to activate the valves in the ABS hydraulic controller. If that assembly has air in it, that wont bleed out of some of the chambers until the valves are opened, and that can only be done electrically.

I use Chrysler's DRB3 scanner because it works on all of my vehicles, and it works on all other brands of cars starting with 1996 models, but unfortunately only emissions stuff, not brakes. The most popular aftermarket scanners are made by SnapOn, Genysis, Matco, and Vertronix. If you search on eBay for scanners, you will see there are simple code readers for less than fifty bucks, but real scanners cost thousands of dollars. Instead, check at your local auto parts stores. Many of them rent or borrow tools, and they might have a scanner that will activate ABS valves. The only alternative is to have a mechanic bleed the system.