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Whistle noise in vents?

2018 Views 6 Replies 4 Participants Last post by  FordServiceCA
Every once and a while I hear a minor whistle noise up by the defrost vent under the windshield. Anyone else have this or know what it might be?
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Have you had a chance to talk with your dealer about this? I can look into some additional assistance.

No I haven't spoken to them yet. But I will!
Mine does this. Only noticed it after I had it in for a new cowl when the blower motor froze. It does it every time I put on max defrost.
Mine seems to do it with the defrost in general, not just on max. But It's not consistent, sometimes it does it and sometimes it doesn't.
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