my car is making a humming noise

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Tutor: None Selected Time limit: 3 Days

what can it be

Nov 1st, 2013
It could be a loose belt-driven accessory like the alternator. When accessories aren't firmly bolted down they can get out of alignment from the belt causing squeeksband rattles that are proportional to engine speed rather than car speed.
Nov 1st, 2013

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Nov 1st, 2013
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Nov 1st, 2013
Mar 30th, 2017
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