Mountain Mule

My fan runs all the time..Sensor? or clutch? I'm sorry, It's my first Jeep and I'm already under the influence of dirt...and mountains.. But don't know a whole heck of a lot about Jeeps...(Mainly vacuum systems and whatnot) Ask me about Harley's and I'm good.. I'm going through this one by one and sure could use help here and there. This is a great forum.
My Jeep runs like a deer but there ARE some 20 year old issues.... Sluggish steering, (2" Rubicon express lift)... Heater not quite hot enough (I live in Colorado) A little bit of a rough idle. (new plugs and wires and distributor with cap, Etc..) I know how to do all that, just maybe I'm stupid with vacuum systems or something.. Anyway, Thanks guys..
Robert...
P.S. What the heck is is with the cruise control??? Is that a normal issue?? Mine doesn't work and a lot of people say theirs doesn't either... Fuse is good....