Brake pedal goes to the floor? replaced all the brakes and bled them. worked for very short time and now the pedal goes to the floor.

Not bleed properly
or you have a rusted out line (leak)

There is NO Procedure-- that when driving a
vehicle or bleeding brakes,do you ever pump them

yes may need to bleed lines at master cylnder

You need to check wheel cylinders, the only way that the brake peddle will go to the floor like that is if there is a lose of fluid pressure somewhere .

Check all the calipers and wheel cylinders

have you blead the splitter to the rear brakes on the drivers side by the trans

Try this,apply the emergency before stepping on the brake.
If this helps the pedal,the rear brakes are out of adjustment.

check vacumn and\or connections to the vacumn boost cannister.

Master cylinder is toast.

When you fixed the brakes, did you take the lid off the master cylinder. I just wonder if you spilled out your brake fluid. The only reason the pedal should go to the floor is if the brake fluid is gone or the master cylinder is not working. Check the fuse. Check the brake fluid level. The pedal only goes to the floor if there is no back pressure in the lines between the master cylinder the lines to the brake pistion on the calipers. Please give me a good ratin and keep me informed.

pump the pedal about 10 times and see if it comes back up, u need to pump the caliper pistons out after a brake job.