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I see the noise increases with RPM thus its not the fan. Sounds like a bearing noise coming from one of the pulleys OR the pulley tensioner... OR the belt itself. Inspect your belt and see if there is any cracking, or other wear, etc.
It could also be a vacume leak BUT that would also result in poor power and loss of fuel economy... Probably not that
Could also be the timing belt..
No matter what have it inspected.
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