I was driving down the road and the brakes were fine and the next light they went to the floor and the started grinding i got it home and bled the brakes i got pressure with the key off and when you start it they go to the floor is it my pads or cylinder

Without sticking my ugly head under the wheel ?? its difficult to give you an instant answer ,but from what you describe it sounds like the disks are worn and the pads have worn right down causing onje of the pads to drop out.So you have a piston popped out which is why when you start the engine the servo is pushing the fluid out but on normal pumping its holding.Renew brake disks and new pads ,also a seal kit for the pistons because if iam correct then you have damaged the seal as well.Also while your doing it because of the age of the vehicle?1994? then i would also renew the front flexible brake hoses ,because then crack/perish and collapse inside the pipes which causes the brakes to hold on.