Nand Posted September 23, 2010 Share Posted September 23, 2010 I have 2001 Rx, roughly 90k miles. Runs great but when I rev up either parked or driving, I hear a whining noise. It sounds like there is air-valve that is not able to breathe clearly, but this is my guess. The location on air-filter side. AND this happens louder when the engine is not fully heated. As it heats up, the sound dies down. On a cold day the noise is louder. Any hints will be much appreciated. thanks in advance folks Quote Link to comment Share on other sites More sharing options...
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