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ttocs

New noise, maybe CV??

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My 2004 Boxster has been running simply great! I've done quite a bit of maintaining since I bought it 3 years ago, all with the idea of having it be in tip-top shape.

 

I ordered a new convertible top which comes in next week. And just tonight I replaced the 3-stalk turn signal after manually cancelling the signals for the last couple months. On the maiden test drive I heard a sound I've not heard before!! While turning right, and accelerating either gently or briskly, I hear a sh-sh-sh-sh-sh sound. Kinda like a lawn sprinkler. There is no clicking sound. I'll check it out further tomorrow, but I'd like to ask you all, is this most likely a CV? Or maybe a wheel bearing? Or maybe something that won't cost any more money???

 

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You should hear the wheel bearing even if you weren't rounding a corner.  Is the noise front or back/ right or left?  Did you pick up anything that might be hitting or touching the wheel well covers on tire rotation or on turning?

 

I recently replaced my rear wheel bearings and the sound was like a warped rotor grinding every rotation of the tires on the brake disc pads.

Edited by kbrandsma

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Thanks for the good points kbrandsma. Tonight I can only hear the cicadas, they're much louder than last night.

 

The sound seemed to be from the right rear, but, because it was a long sweeping right turn highway entrance ramp and the only surfaces that could reflect sound were to the right, it may not have only seemed like it was coming from the right. And as you say, something may have been rubbing, but tonight I just can't duplicate the sound.

 

The brakes are new about 4,000 miles ago and perform flawlessly. 

 

The sound wasn't loud, but loud enough to be concerned about. Today was a hot day and I drove the car about 40 miles with no issue but the a/c was on, top down, but no sweeping on/off ramps until the test drive a few minutes ago. Maybe if the cicadas quiet down I'll go out again. Right now my vote is that something must have been rubbing.

 

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I was able to duplicate the sound. Using very spirited cornering speed with 2/3 and higher acceleration, I think I'm hearing the sound of the exhaust reflected from the separated surfaces to the right. Since the acceleration has to be above a certain threshold, this is why I sometimes don't hear it, and why I heard it for the first time a few nights ago because I've never been that aggressive on that entrance ramp before.

 

I'm gonna say it's nothing. I was already selecting new tools for possible CV and or bearing replacement. I'll save the list for later. Sorry to jump on this without more to go on.

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