when I accellerate to 40 mph, I hear a humming sound. Is this a problem?

2007 CHRYSLER PT CRUISER
57,000 MILES
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DIZ
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  • 1 POST
No problems with the engine. Just the humming sound. No sound driving under 40mph.
Dec 8, 2011 at 10:41 PM
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JACOBANDNICKOLAS
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  • 110,194 POSTS
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Where is the sound coming from?
Dec 8, 2011 at 10:42 PM
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