1st Gen R53 Cooper S Wizzz sound when hot temperature

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by Devrider, Jul 16, 2013.

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  1. Devrider

    Devrider New Member

    Jan 10, 2013
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    #1 Devrider, Jul 16, 2013
    I notice a strange sound when accelerating/rolling, it kind of a " Wizzz" ... Like something who's suppose to follow th rev of the car, but having restriction ...
    Sound if present when using the a/c, but everything work fine ( maybe a/c is a bit hotter ... But still cold ... )

    We have very hot days for a couples of days ( 90-99 F ) with humidity ... The sound doesn't seem to be there in the morning ( 80-82 F ), but when i'm close to job, I'm starting to ear it ...

    Any idea of what it could be ? A/C clutch ? SC failure ?

    DEv
     
  2. CHKMINI

    CHKMINI Club Coordinator
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    #2 CHKMINI, Jul 16, 2013
    I usually here a whizzing sound when I've drank too much beer :beer:beer
     
  3. Nathan

    Nathan Founder

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    #3 Nathan, Jul 16, 2013
    Wonder if maybe the A/C system is low on Freon or whatever is used as Freon these days.
     
  4. Devrider

    Devrider New Member

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    #4 Devrider, Jul 16, 2013
    Any way to check that ? Don't wanna go to Mini before having an idea on the problem ...

    DEv
     
  5. beken

    beken Well-Known Member

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    #5 beken, Jul 25, 2013
    I noticed that you have a K&N filter. Is that a CAI? I noticed that when the weather is extremely warm the sound of air going into my engine is much louder. Possible reasons is because the heat makes the air less dense so your car is sucking more air in at a higher speed in order to get the same amount of oxygen in. It could just be the sound of air passing through your CAI.

    Make sure your connections or seals are all secure. If there is more air pressure, it could be leaking through places where it should not be passing through.
     

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