strange post-shutdown noise w/ a/c use

[Charles Baer]

I get a noise like you describe.  I've been attributing it to the A/C.

Charlie

auditude at cox.net wrote:

>Hi List,
>
>I've noticed a new noise from my 200q20v after I shut it down when I've been using the a/c.  It sounds like a faint bottle rocket sort of a sound, like a missile in the distance changing pitch.
>
>It's coming from under the hood, where I can also hear some faint hissing as if pressure is escaping from one place to another as things settle down.  I don't know if they are related or if the hissing indicates a problem.  The a/c seems to work fine, knock on zebrano.
>
>Initially thought the whistle noise might be the radiator fan coming to a stop, but I don't think it is.  I'm going to check into it more somehow, but I was wondering if this rings a bell with anyone here.  And/or, is there anything in particular I can check?
>
>Thanks,
>
>Ken
>
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