5kcstq brake question

[Chaadster at aol.com]

Can anyone help me diagnose what's wrong with my driver's side rear wheel 
and/or brake-- during even a brief jaunt through town (4 mi), the wheel will 
get very hot to the touch and emit a strange burning smell.  The brake 
doesn't seem to drag, as the car will roll fairly easily when nudged, and I 
haven't noticed the smell consistently during the past few drives, although I 
have been running the A/C.  The car is an 86 5kcstq with ABS.

Any assistence would be appreciated, believe me, as I've already spent close 
to a grand this month getting new front rotors, calipers, and pads!  I've got 
to tackle this one on my own!  Thanks again,

Chaad