G37 Sedan

sound from car when A/C is on

Old Nov 5, 2010 | 12:54 AM
  #1  
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From: los angeles
sound from car when A/C is on

After driving for a while in my car with A/C on, my car makes an noise that i can hear from inside the cabin...its really disturbing and i was wondering if you guys heard it.

its only when the car has A/C on, is in idle, and after i've driven at least 3 or 4 miles with the A/C on. It goes away if i press on the clutch or if i turn the A/C off.

Do any of you have this same problem?
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Old Nov 5, 2010 | 12:54 AM
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From: los angeles
i can't describe the sound but its almost a clicking, rattling, sound
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Old Nov 5, 2010 | 01:21 AM
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interesting. i think i know what you're talking about...but it doesn't go away when i push the clutch in (i'm pretty sure it's normal though; kind of like a click that comes on when you turn it on while you're driving - you can feel the car slow down a bit too as the accessory pulleys work). i get that "turbine" sound though?
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Old Nov 5, 2010 | 01:27 AM
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I got a 7AT and there's no abnormal sound when the A/C is on
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Old Nov 5, 2010 | 01:34 AM
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From: los angeles
it isn't just a single click...not sure how to describe the sound but it bugs me....doesnt sound right. My other cars never had this noise when the A/C was on.
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Old Nov 5, 2010 | 07:56 AM
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From: Chicagoland
Originally Posted by robxc80
it isn't just a single click...not sure how to describe the sound but it bugs me....doesnt sound right. My other cars never had this noise when the A/C was on.
Try to record it and post the file so we can hear it.
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Old Nov 5, 2010 | 08:20 AM
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From: Framingham Ma,
I have a very loud click sound when I turn mine on in the AM.
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Old Nov 5, 2010 | 12:14 PM
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Originally Posted by eksigned
interesting. i think i know what you're talking about...but it doesn't go away when i push the clutch in (i'm pretty sure it's normal though; kind of like a click that comes on when you turn it on while you're driving - you can feel the car slow down a bit too as the accessory pulleys work). i get that "turbine" sound though?
I also get that turbine sound. It usually happens with I set the AC to 78, and it's 75 outside. It doesn't happen when it's ~90 outside. When I turn the AC off, the sound goes away.

That click sound you guys describe is actually normal in my opinion though
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Old Nov 5, 2010 | 01:10 PM
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I haven't noticed any unusual sound from the A/C, in my 2010. We live in SW Florida, so the A/C is always on, when the car is running.
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Old Nov 5, 2010 | 02:58 PM
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I'm not sure but I think you're describing a combination of two common G issues. One, the AC compressor commonly sounds like crap - like a rattling whining turbine, and as described by someone above it happens under certain conditions. Second, the throw out bearing on the manuals can sound like crap too, like there is gravel in the clutch or something. The throw out bearing will come and go when you hit the clutch at idle.

The AC noise is almost amplified when combined with the throw-out bearing, which might be why it sounds like it comes and goes with the clutch.

Dealers will replace the AC compressor if they can replicate the AC noise, they did for me, however the noise came back within a year. I dont think they will do anything about the throw-out bearing noise.
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Old Nov 6, 2010 | 02:39 PM
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From: los angeles
im going to dealer on monday to get my power socket fuse fixed, my radio seek buttons fixed, and i'll bring up this noise and let you all know the results.

Thanks everyone for chiming in!
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