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Window air reverberation noise

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  • #1

    Window air reverberation noise

    Has anyone noticed that if you drive with one of the second row windows down (and other windows up) you get a hideous reverberation from the wind? It tends to happen at any speed over about 50Ks. It is quite loud. If you lower any other window it cancels the noise (obviously due to a changed air flow).
    It is annoying since sometimes we want to drive with the front windows up and a rear window down for the kids, but this tends not to work because of the noise. Any thoughts or solutions?
    2007 GX D4D Auto, 694s, Tint, Dual Batts, long ranger water tank, IPF Fatboys, Brown Davis bash plate, ScanGauge2, Safari Snorkel, Sovereign Bullbar, ARB lift kit
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  • #2
    try opening the rear windows (the lever ones in the back back)
    2004 GXL V6 5 speed auto. Cooper STTs, 40mm Lift, Scanguage II, Flyer batterybox, GME3400 UHF, Engel 40L, Safari Snorkel, IPF Xeon Headlight upgrade, Milford Cargo Barrier.
    [img]http://users.on.net/matthewv/4wd/prado.jpg[/img]

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    • #3
      This is common to any car I have driven. I have found that opening the opposite window at the front, just a crack, is all that is required. E.g. kid opens back-left, you open front-right (just a crack).

      LFaR.
      [size=1][color=#770000]29Feb12:[/color][color=#777700]12GXLTD Auto, ARB Deluxe Winch bar, WARN 9.5xp Winch, IPF 900XS, Tow, Safari snorkel, Front + Rear Recovery points, ARB OME NC Sports, ATZ-4Rib[/color][color=grey], Silver[/color]. [color=orange][b]MaxTrax[/b][/color], [color=maroon]ScanGuage II[/color], [color=blue]ARB CKMA12[/color], [color=deeppink]UHF: GME TX3440 AE4018K1 UNH047SX[/color], [color=darkgreen]Bushranger Air Jack[/color], [color=green]Staun + ARB Deflators[/color], [color=brown]WindCheetah Roof Rack[/color], [color=green]Foxwing[/color], [color=red]Super Charge MRV70, Redarc BCDC1220[/color], [color=darkblue]ARB 60L fridge[/color], [color=blue]MSA Fridge Dropdown slide[/color], [color=darkyellow]DRIFTA Drawers[/color], [color=gold]TJM Bash Plates[/color], [color=brown]TG150[/color].[/size]

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      • #4
        The "helicopter" effect pretty much affects all vehicles... So your Prado is not exhibiting a strange issue.

        On the other hand, if you have a sunroof, and you open it fully, and it causes a helicopter effect with all the windows wound up, then that's a issue.

        I've seen it before on aftermarket sunroofs, so unless buying a car already fitted with an aftermarket roof, I'd never take a brand new car to get a roof put in.

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