i recently replaced the brake pads front and back. also put new wheel cylinders driver and passenger side along with all new brake hardware in the back. they worked great for about a month. the brakes went out while i was coming up to a stop sign. so i replaced the master cylinder. thats not the problem. im not leaking any fluid at all. i just dont have any pressure, the pedal just goes to the floor. im clueless. any ideas of what it could be??

 

no sign of fluid leaking at the wheel cylinders??

 

None. At all. I've We checked everywhere. Its all dry.

 

Hummm
Massive bubble... Or something is COMPLETELY out of adjustment. (rear)

Since you replaced the master cylinder, that should be out of the equation. IF you are not pumping it out anywhere and there is no need to add, it is either the rear brakes out of adjustment COMPLETELY, something has come apart in the rear, or your master cylinder is blowing by even though it is new.
You should have at least fort or rear brakes... Find out what end is working if any. If nothing is working, pressure bleed the system, check adjustment. If all else fails bench test the master cylinder.

Do you have ABS?

 

The only thing i haven't done is bench bleed the master cylinder. I don't think i have abs

 

^^^ This. ABS or no ABS you should bench bleed the master prior to putting it on. Very good possibility you have air in all 4 corners because the master pushed those air pockets into them. Your gonna have fun bleeding those brakes now. You might as well power flush the entire system.

 

Alright thanks ill see if that works