Slight whistling sound in cold temps?
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Rookie
Joined: Oct 2014
Posts: 35
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From: Mi
Slight whistling sound in cold temps?
Okay, so if our cars weren't so quiet, this would probably go unnoticed. To those of you who must endure winter in 40° or below, have you noticed this while coasting from 45mph to 30mph? It sounds as if it is coming from the engine compartment just behind the dash. You must have the radio off to notice it, it is faint, but I'm curious what is causing it. It's always been there since I've had the car (in cold temps only), just brushed it off until the curiosity finally drove me to this thread.
Pole Position
Joined: Mar 2008
Posts: 2,146
Likes: 70
From: Illinois
May be the cabin fan. Have you replaced the cabin air filter recently? When you do, suggest a vacuum of the fan blade area below the filter location. Any debris (like a small leaf) will cause a whistle.
Instructor
Joined: Oct 2010
Posts: 1,241
Likes: 55
From: CA
After the recent cabin air filter replacement, noticed a very faint whistling noise in the cabin at idle. Good quality filter (but non OEM) so I wondered if that was the problem. Thanks for the suggest.
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