Blower motor or final stage resistor?

mighty-dog · Sun, Nov-26-2006, 11:09:50 PM

Hey fellas,
The fan in my M has the symptoms of a final stage fan resistor going bad. The fan usually blows, sometimes at random it does not.

However when the fan blows, it also makes a "motor-like" noise that increase in speed with faster fan speed.

Should I really be buying a new blower motor? Or is the noise another symptom of the final stage resistor going bad?

Both symptoms occurred about the same time (maybe at the same time.)

badgtho · Mon, Nov-27-2006, 01:56:34 PM

sounds like the motor to me.. not the final stage unit.

Midnight97M3 · Mon, Nov-27-2006, 11:12:47 PM

sounds like the motor he's right. I think another indication of a final stage going bad is more erratic fan speed, like a mind of it's own. Not saying that it won't just make your blower randomly shut off as well. can't hurt to replace the final stage with the motor though....

Sun, Nov-26-2006, 11:09:50 PM	#1
mighty-dog Registered User Join Date: Mar 2004 Posts: 334 Reputation: 0	Blower motor or final stage resistor? Hey fellas, The fan in my M has the symptoms of a final stage fan resistor going bad. The fan usually blows, sometimes at random it does not. However when the fan blows, it also makes a "motor-like" noise that increase in speed with faster fan speed. Should I really be buying a new blower motor? Or is the noise another symptom of the final stage resistor going bad? Both symptoms occurred about the same time (maybe at the same time.)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
faulty motor blower or resistor?	kajtek123	E36 M3 (1992-1999)	24	Tue, Jan-05-2010 05:31:46 PM
Blower Motor Resistor	rokayama	General BMW Discussion	1	Mon, Jul-31-2006 06:03:36 AM
Blower Motor Resistor vs Final Stage Unit	bigneil	E36 M3 (1992-1999)	3	Fri, Mar-31-2006 11:23:20 PM
WT heck is the Final Stage Resistor (blower motor) on my 99 M3?!	magas	E36 M3 (1992-1999)	5	Sat, Jun-19-2004 05:01:40 PM
final stage blower resistor install???	punkska20	E36 M3 (1992-1999)	1	Fri, Jul-25-2003 06:46:52 PM

Mon, Nov-27-2006, 11:12:47 PM	#3
Midnight97M3 Registered User Join Date: Mar 2006 Posts: 122 Reputation: 0	sounds like the motor he's right. I think another indication of a final stage going bad is more erratic fan speed, like a mind of it's own. Not saying that it won't just make your blower randomly shut off as well. can't hurt to replace the final stage with the motor though....