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S60R "jack-hammer" sound


Justin R32

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This started yesterday. 2 days ago I got rain squeal and have a visible line around prop shaft where it contacted the resonator. 

Now this happens somewhat randomly but very frequently. 

Sound like a woodpecker or jack hammer on the distance.  Goes with road speed and not engine rpm. 

Youtube links

 

 

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I spent most of the day under the car trying to figure it out. Thought it was angle gear or transmission since it went with road speed and not engine speed.  

After aplying e brake the sound went away and hasn't returned.   Rear drum internals, maybe e brake spring or shoe was loose in the rotor.  Not really worth it to dig into rear rotors unless the sound returns.  E brake works just fine. 

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Ebrake disables the rear drive wheels... So you have just switched off AWD.

Damn...I didn't know that.  That makes sense that the noise goes away.  Thanks!

Yea....the noise is back.  Same as my videos from up above.  Definitely goes with road speed and seems to go away with throttle or braking (I'm assuming this is due to added resistance +/- on the drive shaft.  

I do not 'feel' the noise in the car and it's actually hard to hear with windows up.  Windows down going about 25mph through a school zone or something it's pretty loud. 

Can I replace the carrier bearing without the whole drive shaft??

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Nope, you have to replace the entire driveshaft. I'd suggest Colorado Driveshaft. When I thought I was having DS issues on my R they quoted me $400 with core charge for a refurbished unit. Can't really beat that price IMO and it's cake to disassemble and reinstall.

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