Question about 2004 Lexus ES 330

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Engine whine. whine increases when RPM's increase. seems to be coming from passenger side under the hood.

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Check the power steering fluid first

Posted on Sep 30, 2010

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Dear sir
This is problem with any moving part whose driven by drive belt in Eng compartment, could be problem with alternator,water pump, check and replace that faulty part.
Thanks

Posted on Sep 30, 2010

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Engine making whining noise


There are a couple of things to check. If your power steering pump is low on fluid, or a bad bearing is in the Alternator, they will whine. The PCV valve or any hole in the Vacuum lines will whine as RPM is increased. Even having the Air filter box not fully seated will make a whining noise.

Now both automatic and manual transmissions can whine as RPM is increased. Check fluid for each.

Serpetine belt and pulleys-can make noise.

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