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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 05-23-2005, 03:18 PM
wamusser wamusser is offline
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Mein Auto: 1999 M3 Convertible
A/C fan

My a/c fan just stopped working on me today. The Compressor is still working. Could this have anything to do with having a dirty microfilter?

Thanks,
Bill

1999 E36 M3 Convertible
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  #2  
Old 05-23-2005, 05:08 PM
ImperialDuckM3 ImperialDuckM3 is offline
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Quote:
Originally Posted by wamusser
My a/c fan just stopped working on me today. The Compressor is still working. Could this have anything to do with having a dirty microfilter?

Thanks,
Bill

1999 E36 M3 Convertible

It your display unit that doesn't work. Its a common problem with most E36.
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  #3  
Old 05-23-2005, 05:35 PM
wamusser wamusser is offline
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Quote:
Originally Posted by ImperialDuckM3
It your display unit that doesn't work. Its a common problem with most E36.
Display works as usual. All buttons function, light up, ..etc. Just no fan.
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  #4  
Old 05-23-2005, 07:45 PM
ImperialDuckM3 ImperialDuckM3 is offline
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Did you check the fuse? If there's power, then check your plug which are located at the bottom of the Aux Fan.
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  #5  
Old 05-24-2005, 06:01 AM
wamusser wamusser is offline
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Yes I checked the fuses. I have no idea where the auxillery fan plug is.
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  #6  
Old 05-24-2005, 09:04 AM
ImperialDuckM3 ImperialDuckM3 is offline
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If you looked under your AUX Fan, you will see a connector. You Aux fan is located in front of your radiator. Take out the connector and try to power up the Aux fan. Run hot wire to the connector and see if it turn. If not, then your Aux fan is shot.
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  #7  
Old 05-24-2005, 10:47 AM
wamusser wamusser is offline
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I'm confused as to why I need to do anything with the Aux fan. The heater blower fan is behind the firewall.
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  #8  
Old 05-24-2005, 07:01 PM
ImperialDuckM3 ImperialDuckM3 is offline
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Oh I thought you say your aux fan, which comes on when you turn on your A/C doesn't work.

So what you're saying is that there's NO AIR blowing inside your car, when you turn on the A/C?
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  #9  
Old 07-06-2005, 12:04 PM
Sulsa Sulsa is offline
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I am also having the same issue on my '99 328is. Have to check the fuse yet, but it just happened last night. I can hit all the buttons and they all work fine. I know it's not the actual control unit because I got that problem fixed already. It was a capacitor on the board that needed a bit of re-soldering. Hasn't happened since.
If anyone has any suggestions, please let us know. I'd like to fix this myself if possible. Dealer has limited hours and I can't get it into them very easily. Not to mention it's usually very expensive.
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Old 07-06-2005, 05:26 PM
Bmwcat Bmwcat is offline
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Sounds like it MAY be the resistor package gone south or a Final Stage resistor. Parts could run 50-100 bucks. If you do a search the DIY is not too difficult. Good Luck..
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  #11  
Old 07-07-2005, 12:45 PM
tomas3314 tomas3314 is offline
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Mein Auto: SC 95 M3, 92 325i
Quote:
Originally Posted by wamusser
My a/c fan just stopped working on me today. The Compressor is still working. Could this have anything to do with having a dirty microfilter?

Thanks,
Bill

1999 E36 M3 Convertible
Does it work (try it) only when on max setting but not when on 1-3? This would be your resistor pack (~$30 DIY fix)

P.S. this has nothing to do with a dirty microfilter.
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