87 325es Heater A/C fan only blows on speed 4

[terriibleted65]

Just double checking...since the fan does blow on speed 4 I am assuming the fan is fine and it is the blower switch that needs to be replaced...any confirmations to my theory? thanks

[witeshark]

Yup, the resistor needs to be replaced (not the switch itself).

[terriibleted65]

thanks...I guess I will wait until my repair manual comes in the mail so I can find the resistor :-)

[witeshark]

Yeah, it's been a while, but it takes some doing to get to it!

[silversled]

just did this...it is the resistor. The resistor is located in the engine compartment directly above the blower motor. So you have to do exactly the same thing to replace the resistor as you would to replace the blower itself. It is a kind of goofy looking...a series of springs on an arced mounting plate that slides in/out of the blower motor housing....there are no electrical to this thing! Good luck, I replaced mine for $5 from a junk yard after I wrecked the original one in the process of replacing the blower motor. It's tight on the BMW in that heater blower motor area. best of luck

[terriibleted65]

Well, i bought the resistor and for sure the repair manual is not correct. The repair manual says there is a compartment on the firewall that houses the fan motor and resistor...see the picture included here...i found no compartment. is this darn thing in the cabin for an 87 325es? Thanks for your help.
http://terribleted65.wordpress.com/f...0/dscf2568.jpg

[terriibleted65]

Replaced the resistor and all is fixed. Rob at bavauto.com sent me the following link that was PERFECT with the directions to change the resistor. Total time to do the change was 30-45 mins.
BMW E30 Network - Technical: Ventilation only works in high (4) position

[witeshark]

Very cool, glad it's sorted and thanks for sharing it!