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rfcbuf

2004 Awd Rx330 Rear Drive Train Noise

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I hear a loud continuous humming sound from rear at 45-55mph. RX 330 is AWD and has 40k miles. Can it be from U joint? Dosen't sound like wheel bearing, more like a steady loud roar, noise lessens at speeds above 60 mph. Any other similar complaints or suggestions of noise source.

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I have the same thing on the same vehicle. Sort of a whining noise at the same speed you mention. Mainly seems to occur when coasting or with foot on the gas to maintain speed. I had my mechanic look at it and he found nothing wrong. So, other than the noise, it doesn't seem to affect performance.

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