My back tires are Heating up, too hot to touch. Help!!!?

I have a 1994 Isuzu rodeo, 4x4. The rear drivers side tire was making a metal to metal noise. I took off the tire and it looked like the break caliper had frozen up and not released. It ate the rotor and the pads were gone. I put a new caliper and break pads on. Bleed the brakes. The break like on the dash went off.... for about a day. Now the light is back on and the same tire, with the new caliper and pads is still hot. The calipers are not releasing. The p pagers side is not as hot as the drivers side rear tire is. I jacked up the rear end and put it in neutral, moved the tires up and down. Bearings are ok. Turned the tires forwarded and backwards. No seized calipers, no drive shaft problems, axle grease is good. But I can drive to town and back and the tire is almost to hot to touch. It has stained the aluminum rim :((( Anyone out there got any ideals???