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I just replaced mine with a new one after the old one stopped working. (I lubricated it a few times and it only prolonged the inevitable.)

My problem now is that when I start the car, the fan seems to blow at full speed when I put it in auto. However, after about a minute or two, it seems to slow down to what amounts to about 3 bars on the fan display, even though the display shows it's at full. I know it's at 3 bars because when I try to lower the fan speed using the button, it doesn't change until I get to about the 3rd bar. It never goes higher until I stop the car for a few minutes.

Any idea what my problem could be? Could I be needing a new capacitor/resistor or whatever user Holland posted near the bottom of page one in this thread: http://www.clubtouareg.com/forums/f62/ac-heater-blower-motor-21543.html ?

The part # he shows there is 7L0907521. Here's a translated ebay page with the part: Google Translate

Any input on this? Also, I've taken out that blower motor several times using one of the tutorials on this forum, so that's a piece of cake. Anyone know where this capacitor/resistor part is or how to replace it?
 

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Hi folks,

Please have a look at my post on the AC/Heater Blower Motor posting (sorry haven't yet figured out how to insert link here). Mine was also squeeling and stopped working. I just changed the brushes and it is working a treat! Not sure about the capacitor/resistor part affecting the fan speed as this is not happening with mine (yet....touch wood). When I was putting the blower motor back in I did notice a blue component (similar to Holland's posting) above where the blower motor goes - perhaps check this as it may be the part you are referring to? Hope this helps you out?
 

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Hi folks,

Please have a look at my post on the AC/Heater Blower Motor posting (sorry haven't yet figured out how to insert link here). Mine was also squeeling and stopped working. I just changed the brushes and it is working a treat! Not sure about the capacitor/resistor part affecting the fan speed as this is not happening with mine (yet....touch wood). When I was putting the blower motor back in I did notice a blue component (similar to Holland's posting) above where the blower motor goes - perhaps check this as it may be the part you are referring to? Hope this helps you out?
I did the same: changed the brushes and it is like new!
I did notice that blue part above the blower (on top somehow)

Tried to take some pics for forum:

Hope this helps you out, as well

BB
 

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Good one Bebe! I was a bit embarrassed not having taken and posted pics - was a bit too excited about putting the thing back in to see if it worked....!! Good to see someone else was thinking more clearly!!!
 

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I was just trying to payback for good pics and details that I found on this forum.
BTW the total cost for brushes replacement was CAD 160 (instead of $363 plus taxes at stealership)
 

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The reisstor is found in the back of the glove compartment the panel is perforated just push hard and it will give and behind it you will find the reisstor , it should cost about 50.00 euros, you will have to replace the panel I myself put the same one back and used black duck tape yours Stew hope this helps
 

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pics? Some comments perhaps for the above pics...?

siberian
 

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I was just trying to payback for good pics and details that I found on this forum.
BTW the total cost for brushes replacement was CAD 160 (instead of $363 plus taxes at stealership)
Hi Bebe,
Where did you get the brushes and what's the part number ?
I should have these in my tool box for future repair.
Thanks.
 

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There is a guy here in Edm that fixes electromotors and things like this. He was able to reproduce those brushes. I do belive that he cut them out from some bigger brushes. Anyway they work like crazy

BB
 

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I did the same: changed the brushes and it is like new!
I did notice that blue part above the blower (on top somehow)

Tried to take some pics for forum:

Hope this helps you out, as well

BB
Thanks for this detailed post. You speak of brushes. Does this fan motor not use induction and were they bearings that you cleaned? Considering taking mine to an electrical shop, which is why I ask.
 

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danmaiz,
I don,t know about induction problem (sorry but I,m not that technical of a guy, especialy in english tongue).
Anyway I cleaned everything that was to be cleaned, using that special spray for electrical instruments (is cheap) that can be bought from Canadian Tire (or smthing from USA). And afterwards the electrician cleaned it even better.
You will be OK for shure! It,s very simple!

BB
 

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Thanks for this detailed post. You speak of brushes. Does this fan motor not use induction and were they bearings that you cleaned? Considering taking mine to an electrical shop, which is why I ask.
I googled about induction.
Of course it uses electromagnetic induction (it is an electrical blower/fan).

Those brushes, actualy, are the conection in between rotor and stator. And those have to be replaced

I,ll quote from my research page (Wikipedia):

Brushed DC motor design generates an oscillating current in a wound rotor, or armature, with a split ring commutator, and either a wound or permanent magnet stator. A rotor consists of one or more coils of wire wound around a core on a shaft; an electrical power source is connected to the rotor coil through the commutator and its brushes, causing current to flow in it, producing electromagnetism. The commutator causes the current in the coils to be switched as the rotor turns, keeping the magnetic poles of the rotor from ever fully aligning with the magnetic poles of the stator field, so that the rotor never stops (like a compass needle does) but rather keeps rotating indefinitely (as long as power is applied and is sufficient for the motor to overcome the shaft torque load and internal losses due to friction, etc.)

If I,m wrong, somebody should correct me :)

BB
 

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help!!

Hi folks,

Please have a look at my post on the AC/Heater Blower Motor posting (sorry haven't yet figured out how to insert link here). Mine was also squeeling and stopped working. I just changed the brushes and it is working a treat! Not sure about the capacitor/resistor part affecting the fan speed as this is not happening with mine (yet....touch wood). When I was putting the blower motor back in I did notice a blue component (similar to Holland's posting) above where the blower motor goes - perhaps check this as it may be the part you are referring to? Hope this helps you out?
How do you remove the fan from the assembly to reach the brushes..It is apparent that is the issue, but I don't want to break other pieces getting to them! Thanks.
 

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Hi Happeeshark,

You will need an appropriate puller tool to get the fan blade off the spindle. If in doubt I'd suggest going to a local mechanic who may well do this for a small favor/charge - exactly what I did. Cost a six pack of beer.

Cheers
 
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