I had an '81 and '93 civic sedans that both did this. It used to drive me
nuts on road trips because the kids would always try to crank down the back
window just enough to maximize the oscillation.

Jon

"Elmo P. Shagnasty" <elmop@nastydesigns.com> wrote in message
news:elmop-BE559D.20264618042006@nntp2.usenetserver.com...
> In article <mEe1g.5719$_w6.5141@trndny09>,
> "Richard Kuroski" <rlski@verizon.net> wrote:
>
> > OK all you sedan drivers try this. Find a nice safe stretch of road
and
> > take your Civic up to around 30-35 mph. The engine can be anywhere from
> > 1500 to 2000 rpm. Now here's the "fun" part. Open the right rear
window.
> > What you should hear, if your experience is anything like mine, is a
loud
> > oscillating wind buffeting sound.
>
> This has been around for much, much longer than the new Civic.
>
> I had a 91 Civic wagon that did this.
>
> I've also had other, non-Honda cars do this.
>
> Never figured it out, either.
>