>>

Not necessarily. Opening the vent window could upset a number of
things--including interior air pressure--that could cause the vent
window to whistle. Does the whistling stop when you open any other
window, or just that one?

Jim

>>
>> Are you sure the sound is coming from the vent window rather than the
>> door
>> seal?  The source of a sound in a moving car is often displaced from
>> where you
>> think it is.
>>
>> George
>
> Nope, that much I do know.
>
> Whistle stops when I open the vent window so it's coming in around it
> somewhere.
>
>
> --
>
> Wil
>
>
> -- http://www.charmfx.com/
>
> "Anyone who can handle a needle convincingly can make us see a thread
> which is not there."
> -- E. H. Gombrich
>