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  #1  
Old 08-04-2011, 08:29 PM
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AC Blowing Warm Air

PLease help. AC is blowing warm air. I just recharged it and it continues to blow warm air. I noticed the aux fan does not come on either.

Thanks@@@@
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Old 08-04-2011, 08:33 PM
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Here you go http://www.xoutpost.com/articles/x5/...placement.html
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Old 08-05-2011, 02:34 AM
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Here's what I'm going through....

Dead aux fan > condenser can't keep up > high side pressure rise > compressor purge > pressure switch sees low refrigerant > compressor clutch will not engage. That's what's in my head... I could be wrong on that cascade theory, so here's a link:

http://www.princeton.edu/~sdepasqu/bmw/pdfs/AC.System.pdf

Currently awaiting new aux fan, proper refrigerant vacuum/recharge service, and test operation. But hey, at least the window regulators work! lol
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Old 08-08-2011, 03:07 PM
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It could be the Final stage resistor, aux fan resistor, or the pressure sensor.

I would go with the pressure sensor first.

I need to know what year and model you have.

Pressure sensor looks like this.



thanks and I hope I could help.

Joe
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Old 08-23-2011, 04:10 PM
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joe, i have '00 4.4i x5.
Thanks.
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