View Full Version : Blower Motor Dead? 91 BMW 520i

09-15-2008, 05:10 PM
My 91 BMW 520i blower fan just stopped working one day. I do not receive air on any settings (even on 4). I checked the fuse and the fuse is good. I suspect the blower fan is toast. I guess my next route is to access the blower fan from the engine compartment and apply 12 volts directly to the motor to see if there is any life in the motor. Other than that, any other suggestions anyone could recommend? Thanks.

09-15-2008, 07:59 PM
check the blower motor resistor

bimmer dot info
09-16-2008, 07:55 AM
The resistor should not affect it when set on 4.
Your plan to apply power to the motor sounds good.

09-17-2008, 04:06 AM
Welp, I took the blower motor out last night and when I applied 12 volts to the motor, the blower almost flew out of my hand. I clamped the blower back into slot and everything was back to normal. I guess maybe the connection to the motor was dirty. I'm glad it wasn't the resistor or motor but I just wanted to thank everyone for the input and the DIY helped with the disassembly. :thumbup: