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1971 911T's Avatar
 
Join Date: Sep 2007
Location: Seattle
Posts: 194
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rear end whomp whomp whomp

taking advantage of the mild and sort of dry weather been driving the car.

i'm only on about 500 miles since i got the car, so it's still 'shaking down cruise' days.

this morning the rear end driver-side started having a rotational whack-whack sound, like a flat tyre, but harder, almost a 'thump'. disappeared when accelerating, resumed when cruising or decellerating.

it's too dark to check it out. what could this be? the car handled normally...

Old 01-09-2008, 01:41 AM
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Join Date: Jul 2007
Location: Halifax, Canada
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If the car was sitting for a while it could have just been a flat spot. Why only in that tire? I don't know, maybe when it was stored that tire lost a bit more air than the rest.

It could also be a suspension problem. I think if you search 'cupping' it might give some insight.

Cheers!
Old 01-09-2008, 02:11 AM
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Join Date: Feb 2001
Location: N.S. Can
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While you're under there, check for loose/worn CV joints.
Badly torn CV boots might do it too and if they're that bad you have some R&R to do on the joints themselves.

Good luck.
Les
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Les
My train of thought has been replaced by a bumper car.
Old 01-09-2008, 02:23 AM
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I second the CV joints...

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Old 01-09-2008, 06:44 AM
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