Still have low freq vibration (95 A6Q)
dgraber460 at aol.com
dgraber460 at aol.com
Tue Sep 22 05:39:14 PDT 2009
My first response is to always check what was changed just proir to an issue. The tie rods aka alignment?(thus causing cupped tires etc.) would be a first suspect for me.
Dennis
Denver
-----Original Message-----
From: Grant Lenahan <glenahan at vfemail.net>
To: beattyr2003 at cox.net
Cc: quattro at audifans.com
Sent: Tue, Sep 22, 2009 6:17 am
Subject: Re: Still have low freq vibration (95 A6Q)
my first suspicion was tires - feathered or cupped.
Swap them front to rear or put on snows to check fast
Grant
On Sep 22, 2009, at 7:05 AM, <beattyr2003 at cox.net> wrote:
> I posted about this oh about a week ago and only saw a couple
> responses, neither of which could be the problem.
>
> I have noticed some more things about the symptoms.
>
> Its most noticeable at speeds around 20-40mph. Its irrelevant to
> having the car in gear or in neutral, clutch in or out. I had said
> before it went away when I turn, thats wrong, it doesnt go away
> turning it stays the same.
>
> The best way I can think to describe it is if you were driving on a
> very finely cut rumble strip in the road. Or grooved pavement. It
> also feels/sounds? like its coming from the rear of the car.
>
> Since its not dependant on the engine being engaged, I can rule out
> anything motor related.
>
> I know what wheel bearings going out usually sound like, they howl
> at nearly all speeds instead of vanishing at 50+ mph. So that
> rules out bearings.
>
> I am left with thinking its either something in the rear
> drivetrain, or my tires somehow have worn in an odd fashion to
> cause this odd noise.
>
> Anyone got any ideas on this?
>
> Things I have done with the car recently are replacing the prop
> shaft rear CV joint over the summer and I just replaced both rear
> tie rods. I have verified that the center bearing support has not
> come loose nor does it look like its in terrible shape. I could
> crawl back under the car and verify that my CV joint bolts havn't
> started loosening up, but other than that or swapping all 4 tires
> out, I am kind of at a loss for where to go next.
>
> Thanks,
>
> Rob
> 1995 A6Q (271k miles)
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Grant Lenahan
glenahan at vfemail.net
(201) 602-4702 mobile
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