I replaced the front brake pads and rotor,bleed the brakes now I have sponggy brakes???

you still have some air trapped in the system. I'd bleed the whole system--not just the front since the car is 11 yrs old and brake fluid is hydroscopic (attracts water) it's a good idea to pump fresh fluid in there every couple years. Start at the farthest point from the master cylinder and bleed it till you see no air bubbles for several pumps on the pedal. then go to the other back wheel, then to to front. This takes patience and some brake fluid but you'll get a firm pedal as long as there are no other leaks in the system--check the rear wheel cylinders while you're at it, they can be giving it up at this point as well.

I bleed all the brake again and i am still having the same problem. Could a caliper cause the problem?