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Registered
Join Date: Jul 2006
Location: L.A.
Posts: 283
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Rear Rumbles when turning left
Hi guys,
my '97 Boxster started to rumble (as if hitting a rumble strip) when I turn left. It only happens at high speed and steering wheel input doesn't affect it. In other words, if I turn the wheel to the left at low speed nothing happens so the rumbling only shows up when there's some gravity (centrifugal force) involved. It's definitely coming from the rear, the vibration isn't noticeable in the steering wheel (not the front tie rods). I can hear it and feel through my seat... Anyone have any idea what that could be? Half shaft? Loose transmission mount? Rear CV joint? Cheers, n. _ http://nicolashunziker.com |
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10-12-2007, 10:49 PM
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What?
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Sounds like it could be a wheel bearing. A common problem with Boxsters.
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Tom J. 911SC Cab SCWDP CaymanS |
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10-19-2007, 05:49 PM
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Max Sluiter
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I had a similar problem. It turned out to be the rear strut mount.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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10-19-2007, 09:17 PM
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Registered
Join Date: Jul 2006
Location: L.A.
Posts: 283
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Ok, we finally figured out what the problem was: Cracked Motor Mount.
We've been trying to hunt down this noise. At first my mechanic told me it was tire rub and cut away some of the inner wheel lining. Rumbling was still there. Car went back to the mechanic. I suggested RIGHT rear wheel bearing or loose motor mount. Shop called back and said that they drove the car with a mechanic in the trunk, listening for the noise... noise came from LEFT rear and they thought I might be a bad wheel bearing. They weren't 100% sure but they would start with the rear LEFT wheel bearing. This didn't make sense to me because the rumbling only showed up when turning LEFT (and under load). If anything I thought the RIGHT wheel bearing was bad. Shop said that noise was loudest coming from the LEFT side when turning LEFT. So we went ahead with replacing the rear LEFT wheel bearing. As they started to change the rear wheel bearing they noticed that the engine mount was cracked. Cheers, n. _ http://nicolashunziker.com |
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12-12-2007, 02:06 PM
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Join Date: Apr 2007
Posts: 100
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i hate that
 i just had to replace the mount on my 2001 S
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12-19-2007, 04:19 PM
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Registered
Join Date: Jan 2001
Posts: 8
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Mine is rumbling on both sides, but it goes away when I press the brakes, so I am getting ready to do the bearings. But sounds like that may not fix the problem.
How can I inspect the motor mounts? |
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01-07-2008, 10:31 PM
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Registered
Join Date: Jul 2006
Location: L.A.
Posts: 283
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If you have a cracked motor mount as well, you should be able to do a visual inspection before doing the wheel bearings.
Cheers, http://nicolashunziker.com |
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01-07-2008, 11:51 PM
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1983 911SC Cab / 2005 997.1 / 2006 Cayman S
997
1971 Porsche 911S
