whirly noise when a/c on

mikeinaustin · 05-05-2010, 03:45 PM

Any of you notice a whirly/whining noise when the ac is on? i notice it most when rpm's are below 3000. if i switch off ac, whirl goes away.

no need to drive the car, you can turn on car and leave in park, turn ac on, push on gas pedal and hear whirl, turn of ac and whirl goes away.

am i the only one?

cdeslandes · 05-05-2010, 05:05 PM

No whirl here

cdmulders · 05-06-2010, 11:40 AM

No whirl here either.

msimon18 · 05-06-2010, 03:26 PM

I do have what sounds like the same phenomenon. It was not there when I picked up the car aobut 1200 miles ago but has recently raised its head. Everything works fine, it is not loud so I decided to just leave it be until I take the car in for service or if it fails prior to that.

coetzejg · 05-07-2010, 04:28 AM

Oh yes, have that same problem since the beginning! My car is at present been with the dealer for the entire week now about that.

The other related problem is that when the temperature goes above 25 degrees Celsius, there is high pitched whinning comming from the compressor, belt area betwen 4500rpm and 5500rpm. Switch the compressor off and it's gone immediately. Really irratating!

So far the can't seem to find the issue. COmpressor have been replaced. I believe the issue lies in the V-belt tension, tensioners or tensioner pulleys.

Will have to see what the have to dish up this afternoon for me.

mikeinaustin · 05-07-2010, 02:52 PM

hmmm unique to 3.0's ?

coetzejg · 05-08-2010, 01:59 AM

can't say.
Picked the car up yesterday back from the dealer. All they could do is to send a sound clip of the noise off to the factory waiting for further instructions apparently.

Keep me updated please on your findings also.

pentium_fun · 08-01-2010, 10:33 AM

Same problem with mine. AC unit replaced under warranty but the noise is still present!!!

Any thoughts guys?

msimon18 · 08-01-2010, 12:34 PM

I kinda like it ......

Torn · 08-02-2010, 02:07 AM

I seem to have the same problem with my z4 when the AC is on. Kinda irritating, gunna bring it in when I get the chance for a few things

05-05-2010, 03:45 PM	#1
mikeinaustin First Lieutenant 42 Rep 362 Posts Drives: 2010 z4 3.0 crimson red Join Date: Sep 2009 Location: austin, tx iTrader: (0)	whirly noise when a/c on Any of you notice a whirly/whining noise when the ac is on? i notice it most when rpm's are below 3000. if i switch off ac, whirl goes away. no need to drive the car, you can turn on car and leave in park, turn ac on, push on gas pedal and hear whirl, turn of ac and whirl goes away. am i the only one?
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05-05-2010, 05:05 PM	#2
cdeslandes Captain 27 Rep 676 Posts Drives: 2010 Z4 s35i Join Date: Apr 2010 Location: Connecticut iTrader: (0) Garage List 2014 Jeep Wrangler ... [0.00] 2013 Volvo XC90 [0.00] 2010 BMW Z4 sDrive35i [8.67]	No whirl here __________________ 2010 BMW Z4 s35i 2014 Jeep Wrangler Rubicon 2013 Volvo XC90
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05-06-2010, 11:40 AM	#3
cdmulders Captain 327 Rep 697 Posts Drives: 2013 535xi Join Date: Dec 2009 Location: Nanoose Bay, BC iTrader: (0) Garage List 2013 BMW 535i xDrive [0.00] 2010 E89 Z4 sDrive35i [8.00]	No whirl here either. __________________ 2013 535xi, Carbon Black, beige interior, M Sport package, HUD, DDC & ARS, ACS springs, Kelleners wheels 2010 Z4 35i, Crimson Red, beige interior, 6sp manual, Adapative Suspension 2000 528i, Cosmo Black, beige interior, Sport package (retired)
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05-06-2010, 03:26 PM	#4
msimon18 Retired 19 Rep 868 Posts Drives: Z4 s30i Join Date: Mar 2007 Location: The Villages, FL iTrader: (0) Garage List 1965 Isetta 300 [0.00] 2004 1/5 Scale M3 GTR [10.00]	I do have what sounds like the same phenomenon. It was not there when I picked up the car aobut 1200 miles ago but has recently raised its head. Everything works fine, it is not loud so I decided to just leave it be until I take the car in for service or if it fails prior to that. __________________ M3 GTR - 1/5 scale - 4.2 HP w/ Collari hydraulic brakes - would you believe ~80 MPH on straightaway !!
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05-07-2010, 04:28 AM	#5
coetzejg Enlisted Member 6 Rep 41 Posts Drives: 2010 Z4 3.0 M Black/red Join Date: Jun 2009 Location: Cape Town, South Africa iTrader: (0)	Oh yes, have that same problem since the beginning! My car is at present been with the dealer for the entire week now about that. The other related problem is that when the temperature goes above 25 degrees Celsius, there is high pitched whinning comming from the compressor, belt area betwen 4500rpm and 5500rpm. Switch the compressor off and it's gone immediately. Really irratating! So far the can't seem to find the issue. COmpressor have been replaced. I believe the issue lies in the V-belt tension, tensioners or tensioner pulleys. Will have to see what the have to dish up this afternoon for me.
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05-07-2010, 02:52 PM	#6
mikeinaustin First Lieutenant 42 Rep 362 Posts Drives: 2010 z4 3.0 crimson red Join Date: Sep 2009 Location: austin, tx iTrader: (0)	hmmm unique to 3.0's ?
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05-08-2010, 01:59 AM	#7
coetzejg Enlisted Member 6 Rep 41 Posts Drives: 2010 Z4 3.0 M Black/red Join Date: Jun 2009 Location: Cape Town, South Africa iTrader: (0)	can't say. Picked the car up yesterday back from the dealer. All they could do is to send a sound clip of the noise off to the factory waiting for further instructions apparently. Keep me updated please on your findings also.
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08-01-2010, 10:33 AM	#8
pentium_fun New Member 5 Rep 19 Posts Drives: E89 Z4 sDrive23i Join Date: Aug 2009 Location: Romania iTrader: (0)	Same problem with mine. AC unit replaced under warranty but the noise is still present!!! Any thoughts guys?
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08-01-2010, 12:34 PM	#9
msimon18 Retired 19 Rep 868 Posts Drives: Z4 s30i Join Date: Mar 2007 Location: The Villages, FL iTrader: (0) Garage List 1965 Isetta 300 [0.00] 2004 1/5 Scale M3 GTR [10.00]	I kinda like it ...... __________________ M3 GTR - 1/5 scale - 4.2 HP w/ Collari hydraulic brakes - would you believe ~80 MPH on straightaway !!
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08-02-2010, 02:07 AM	#10
Torn Lieutenant 19 Rep 433 Posts Drives: 2014 GTR Join Date: Jun 2010 Location: North Jersey iTrader: (0)	I seem to have the same problem with my z4 when the AC is on. Kinda irritating, gunna bring it in when I get the chance for a few things
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