Could be a vacuum leak somewhere. A small hole will sometimes whistle as it
draws air.

At 12:46 AM 8/18/2004 -0400, Joy Hecht wrote:
>I just noticed yesterday a new trick in my van.  When I turn on the engine I
>get a kind of high pitched whistle.  Doesn't matter if I'm in gear, moving,
>have breaks on or don't, have foot on gas pedal or not, etc. - it starts as
>soon as I turn the key in the ignition.  No warning lights coming on, radio
>off, fans off, A/C off, gas tank full.
>
>Any thoughts?  I just saw an email from a day or two ago about a
>transmission whine - could it be the same?  But mine whistles whether or not
>I even have my foot on the pedal, which is different from what David
>Shepherdson reported.
>
>
>Joy
>
>****************************************************************
>Joy Hecht
>and Matilda, 1989 Burgundy Vanagon
>
>For musings about life and the vanadventures:
>http://users.rcn.com/jhecht/gypsy
>
>****************************************************************