clutch fan

my girflriend just bought a 1992 or 1993 hatch, everything runs fine untill you hit the highway for a few. then the clutch fan comes on. now after you get off the highway the clutch fan WILL NOT STOP. turn the car off let it sit till its completely cold BUT the fan stays on.

its also making the engine heat sit at the second bar up from cold, it wont go anyhigher.

thanks