Last nite my brakes started acting funny. When you push the pedal it is a little hard at first but then goes down like normal, but if you let off and then push back on it the pedal is soild and you can stand on it and it won't move and the brake barely apply.

I have search the forum and google but can't find what it maybe any help will be nice.

The fuild is fine.

 

sounds like possibility some issues with the booster.