a/c whine. normal?

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Old 08-05-2006, 11:40 PM
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a/c whine. normal?

i notice a high pitch whine @ 2800+ rpm only with the a/c on. i've read old threads on this but none of them were conclusive. anyone with 03 cls 6mt have the same issue? and is this normal?
Old 08-07-2006, 07:06 AM
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my AC makes whining noise even when car is idleing in park. It works fine, so I will not have it fixed before there is a problem.
Old 08-07-2006, 07:30 AM
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Whines big time...hate driving the car with the air on.
Old 08-07-2006, 08:39 PM
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for a second there i thought i was the only one with this issue. so this is normal? can anything be done to remedy the whine? i'm pretty sure it wasn't like that when i first got it.
Old 08-07-2006, 08:44 PM
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Have someone check the belt tension and/or replace it.
Old 08-07-2006, 08:48 PM
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Originally Posted by TRILIGHT
Have someone check the belt tension and/or replace it.
I belive a sign of a bad belt tensioner is not the same (its not whining, its rather clunking noise) ?
My wife's 2000 Honda Accord started is making the same noise..... the noise is on and off (as AC cycles).
I wonder what it is
Old 08-07-2006, 08:58 PM
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OMG this happens to me also my A/C whines also like it sucks in air and then it stops and i dont know what the problem is also
Old 08-07-2006, 09:13 PM
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my current approach is to ignore it since I am out of warranty.
I'll wait until it becomes a real problem before I spend $$$ to have someone look at it.
Yes, the noise is irritating, but yet its not clear if this is a serious problem. My A/C is blowing cold air, so I can't complain.
You don't want to go to the dealer, pay $90 for diagnostics to hear something like "can't reproduce" or "your A/C is operating normal".
fuk that....
Old 08-07-2006, 09:52 PM
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Originally Posted by russianDude
my current approach is to ignore it since I am out of warranty.
I'll wait until it becomes a real problem before I spend $$$ to have someone look at it.
Yes, the noise is irritating, but yet its not clear if this is a serious problem. My A/C is blowing cold air, so I can't complain.
You don't want to go to the dealer, pay $90 for diagnostics to hear something like "can't reproduce" or "your A/C is operating normal".
fuk that....
that's an interesting approach... considering the fact that i am out of warranty as well, i might have to do the same. i just wanted to make sure this was not a serious problem and needed to be addressed asap.
Old 08-07-2006, 10:03 PM
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My car has been whining since I recharged the A/C. Did you recently recharge it? Or any of the other people posting do this?
I came to realize that my A/C usually only whines when I have it on the coldest setting of close to it when it is really hot out.
It was however whining a lot more before I took some of the pressure out of the low pressure line.
Old 08-07-2006, 10:13 PM
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Originally Posted by redsly
My car has been whining since I recharged the A/C. Did you recently recharge it? Or any of the other people posting do this?
I came to realize that my A/C usually only whines when I have it on the coldest setting of close to it when it is really hot out.
It was however whining a lot more before I took some of the pressure out of the low pressure line.
i have not recharged yet. does it get louder or more noticeable after the recharge?
Old 08-07-2006, 10:18 PM
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My A/C sounded as any brand new car until I did the recharge myself! I noticed that when I first did it, the engine would sort of pulsate when the A/C kicked on (at idle or highway speeds) and seamed to lose power for a second, but when I lowered the pressure closer to the 25psi (I think I only dropped it back down to around 28-29psi) that was in it before recharging, that it stopped doing the pulsing. Unfortunatly, it still makes a humming/whining sound when it cycles though.
Old 08-08-2006, 07:33 AM
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Originally Posted by redsly
My car has been whining since I recharged the A/C. Did you recently recharge it? Or any of the other people posting do this?
I came to realize that my A/C usually only whines when I have it on the coldest setting of close to it when it is really hot out.
It was however whining a lot more before I took some of the pressure out of the low pressure line.

Nope - mine hasn't been touched since it came from the factory. Still under warranty so maybe I'll have it checked out next time I am in...
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