1990 Mercedes-Benz 300SL Q&A

1990 Mercedes-Benz 300SL Question: heater blower motor

I installed a heater blower motor in my 300sl. And the motor only blows on the lower speed. When i first installed it the motor blew on all speeds. After five minutes in only blows on the first speed.. -
Answer 1
There is a blower motor speed module that controls the speed of the blower motor , I would inspect that. The wires from the blower motor get power and ground from that component. -
Comment 1
where is the blower motor on the 3oosl located? -
Related Items:
...han a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.