2004 Mercury Mountaineer Logo
Posted on Jan 16, 2011
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I have a 2004 mountaineer with 71,000 miles. When it's cold it makes a whining sound and when you accelerate it makes a noise like a turbo, a hissing noise. When it warms up it goes away.

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  • Posted on Jan 16, 2011
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Does the pitch change and/or go away when the transmission changes gears?

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