I'm looking for some help trying to isolate why my 86 300e has a non-functioning blower motor. After the car is well warmed up it is possible to feel some heat but there is no blower. It doesn't seem to make a difference what setting the fan dial is on. I am not sure if the control unit is not functioning to trigger the fan to come on or if there is actually a problem with the blower motor. Any help would be great.