Still have low freq vibration (95 A6Q)

[Rob]

The sound was there *BEFORE* I put in the new tie rod ends and I rotated
the front tires the rear and also no change in noise.


On Tue, 2009-09-22 at 08:39 -0400, dgraber460 at aol.com wrote:
> 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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