If you have no other issues i would not worry much.
Most places do not even hook up OBD 1 cars, is it possible they did not realize it was OBD 1 and not 2?
I have a shop try to hook up mine when i went for an inspection, but their computers only support OBD2 and it gave them the error, could not connect/no signal from vehicle.
Gotta love an E34!!
Originally Posted by BMR_LVR
So a synopsis of a normally operating fan clutch:
Engine stone cold - fan clutch engaged
Engine at normal operating temp - fan clutch disengaged (easily stopped with the newspaper)
Engine above normal operating temp - fan clutch engaged