'07 525i a/c whirring sound
03-20-2014, 05:04 PM
#1
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My Ride: 2007 525i
'07 525i a/c whirring sound
Seems when ambient temps are below 75 or below degrees out, the a/c whirs pretty significantly louder more than normal. Could this be due to lack of improper freon?
03-21-2014, 05:21 AM
#2
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My Ride: 545i sport
Model Year: 2004
Probably not due to refrigerant level. Mine is whining as well and it indicates to me that it is time to have the compressor rebuilt/replaced. I am just waiting until I have the time to replace valve stem seals, coolant transfer pipe, heater water valve, and clean the secondary air ports.
03-21-2014, 03:19 PM
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My Ride: 14 550i
I agree it could also be your Compressor going out. If it is coming from the cabin it is possible it could be a blower motor also, but since you mentioned while AC is on the compressor makes more sense.
03-22-2014, 05:07 AM
#4
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Blower motor is fine. You can turn the compressor off and it goes away. When it's above 75 ambient degrees out it's fine.
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