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Old Jul 4, 2009 | 02:49 PM
  #28 (permalink)  
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The Beep
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Joined: Jul 2008
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From: KINGWOOD TEXAS!
Default Re: roadster rear window stick-up

Primary cause? Top up, windows down. It's called "Cowl Shake" and I learned about this with the C4 Vette. With the Targa top removed and windows up, a resonant or vibrating air pressure would shake the interior to pieces.

I noticed this with the XF right away and will NOT drive even secondary roads with the windows down unless the top is down also.

Having said that, having a heavy glass window simply glued to the top is not the best idea either.
 
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