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On the way home tonight in the pouring rain, my car began making the loudest harmonic noise I've ever heard in my life (it almost sounded like a tornado siren). The noise was only evident when keeping my foot off of the accelerator and sounded like it was coming from the right front end. When accelerating, the noise would go away entirely. Hitting the brakes made no difference.<p>I should note that I had been driving through some fairly deep pools of water on the way home, but the noise popped out of nowhere. <p>I have also been getting a harmonic noise, but much quieter in comparison in dry driving conditions as well. <p>Any thoughts??? Thanks in advance.<br>
 

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2005 V70R, Midnight Blue, M66
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Re: Harmonic Noise (S70_4.4+)

Known problem with really no known fix for the R series, other than, "bring it in and we will adjust it".<p>The exhaust system deforms, and comes in contact with the drive shaft making a loud screech. As soon as the exhaust system is warm again, after being suddenly cooled by the water, the noise will go away. <p>There is a TNN. Make sure the dealer uses the latest one which excludes the R from the bracket application.
 

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Re: Harmonic Noise (S70_4.4+)

Wheel bearing?
 

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Re: Harmonic Noise (rogersampson)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>rogersampson</b> »</i></TD></TR><TR><TD CLASS="quote">Known problem with really no known fix for the R series, other than, "bring it in and we will adjust it".<p>. </TD></TR></TABLE><br>You should know better, that usually IS the fix. Also, remove the "strap" that goes over the driveshaft, it can cause undue problems and is usually the source of the noise.<br>(Strap can get hung up on a large bump, get pushed into the driveshaft and you're stuck with a 3K bill courtesy of a bad design. The strap has no real function so get rid of it<br>
 

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Re: Harmonic Noise (S70_4.4+)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>S70_4.4+</b> »</i></TD></TR><TR><TD CLASS="quote">On the way home tonight in the pouring rain, my car began making the loudest harmonic noise I've ever heard in my life (it almost sounded like a tornado siren). The noise was only evident when keeping my foot off of the accelerator and sounded like it was coming from the right front end. When accelerating, the noise would go away entirely. Hitting the brakes made no difference.<p>I should note that I had been driving through some fairly deep pools of water on the way home, but the noise popped out of nowhere. <p>I have also been getting a harmonic noise, but much quieter in comparison in dry driving conditions as well. <p>Any thoughts??? Thanks in advance.<br></TD></TR></TABLE><p>This sounds like the rain squeal, although the "going away upon accelerating" does not. <p>Also the noise in the dry does sound like a wheel bearing. I'd have that checked, and tell them you've experienced the rain squeal. I had a bearing go at 28,000 miles, they are a known failure item.<p>Have them do the rain squeal fix, or you can just remove the center resonator as many of us have done. Trust me, it's worth it! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: Harmonic Noise (S70_4.4+)

There is a fix for the rain squeal, but it's not for the R. My dealer did it anyway and I have not had the problem since....so ask your dealer if they would do it on your R.<p>Secondly, the other noise may be the caliper pin. I had a bent one on my 2006 V70R upon delivery and it made an awful noise. They replaced it quickly and all is better. I would hope that for a 2006 S60R that it is not the bearings...
 
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