F150 front brake problems

Truck is a 2000 F150 2WD with 4 wheel ABS and discs all around. Recently, the truck has been pulling to the right when braking. The other day my truck was having a hard time accelerating and then I smelled burning brakes. When I pulled over smoke was coming from the front left wheel. I let it cool and slowly got it home. I assumed it was the caliper pins so I took them out and cleaned and lubed them. After, the brake was still binding. So I bought a replacement caliper and installed it yesterday. After bleeding the brakes several times I took it for a test drive. The truck still pulls to the right and the left caliper still binds. Any idea on what this could be? I do have an ABS light on. It came on last summer and I had the computer scanned and it was the front left sensor. I changed it and the light went away, but came back about a month later. I haven't worried with it because the brake light is not on, just the ABS light. Any help would be greatly appreciated.

Problem ended up being the brake hose. Was thinking about it this morning, so I went this afternoon and picked one up. Put it on and as soon as I bled the brakes I knew it fixed it because the amount of brake fluid coming from the bleeder was at least twice what it was with the old hose. Test drive around the block and the truck stops great, doesn't pull, and the brakes let loose when I let off the pedal.