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jhumm · May 10th, 2004, 02:02 PM

I have a March '04 build MCS. At high MPH (over 80) with both the auto air and air recirculating on, there is a high frequency/pitch noise coming from under toggle switches. When I turn off the recirculating, the noise stops. Could this be the fan motor? Anyone else heard this?

atn57 · May 10th, 2004, 03:04 PM

I have this too. The air from the outside is getting passed the seals around your air vents. This causes a high pitched sound. You can just open the vent instead of recirculationg and it will go away.

jhumm · May 10th, 2004, 03:53 PM

Quote: Originally Posted by atn57

I have this too. The air from the outside is getting passed the seals around your air vents. This causes a high pitched sound. You can just open the vent instead of recirculationg and it will go away.

Do you mean the dash vents? The noise is not coming from them, it coming from under the dash. Hard to tell exactly but certainly not the dash vents.

ncdave · May 10th, 2004, 04:03 PM

Does the noise stop when you turn off the A/C Compressor? I was told that the compressor could be at fault.

jhumm · May 10th, 2004, 04:06 PM

I'm not sure. If I slow down under 80 MPH or turn off the recirculating, the noise stops. I'm assuming that with the air off, it would stop as well. Normal a/c is fine. It's just the high speeds with the recirc.

May 10th, 2004, 02:02 PM	#1
jhumm MINI2 Newbie Join Date: Feb 2004 Local Time: 05:13 AM Posts: 6 Offline	Recirculating Air + high MPH = High Freq. Noise I have a March '04 build MCS. At high MPH (over 80) with both the auto air and air recirculating on, there is a high frequency/pitch noise coming from under toggle switches. When I turn off the recirculating, the noise stops. Could this be the fan motor? Anyone else heard this?

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May 10th, 2004, 03:04 PM	#2 (permalink)
atn57 MINI2 Newbie Join Date: Apr 2004 Local Time: 04:13 AM Posts: 35 Offline	I have this too. The air from the outside is getting passed the seals around your air vents. This causes a high pitched sound. You can just open the vent instead of recirculationg and it will go away.

May 10th, 2004, 03:53 PM	#3 (permalink)
jhumm MINI2 Newbie Join Date: Feb 2004 Local Time: 05:13 AM Posts: 6 Offline	Quote: Originally Posted by atn57 I have this too. The air from the outside is getting passed the seals around your air vents. This causes a high pitched sound. You can just open the vent instead of recirculationg and it will go away. Do you mean the dash vents? The noise is not coming from them, it coming from under the dash. Hard to tell exactly but certainly not the dash vents.

May 10th, 2004, 04:03 PM	#4 (permalink)
ncdave MINI2 Senior Join Date: Dec 2002 Location: Raleigh, NC Local Time: 05:13 AM Posts: 637 Offline	Does the noise stop when you turn off the A/C Compressor? I was told that the compressor could be at fault.

May 10th, 2004, 04:06 PM	#5 (permalink)
jhumm MINI2 Newbie Join Date: Feb 2004 Local Time: 05:13 AM Posts: 6 Offline	I'm not sure. If I slow down under 80 MPH or turn off the recirculating, the noise stops. I'm assuming that with the air off, it would stop as well. Normal a/c is fine. It's just the high speeds with the recirc.

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