Interesting low speed vibration, 5KQ and 5KTQ

[Grant Lenahan]

no. will be vastly worse at higher speed.

Grant
On May 28, 2008, at 9:02 PM, John S. Lagnese wrote:

> Bent front rim?
> ----- Original Message -----
> From: "Mark J. Besso" <mbspeed at maxboostracing.com>
> To: <john at westcoastgarage.net>; "Audifans" <quattro at audifans.com>
> Sent: Wednesday, May 28, 2008 8:25 PM
> Subject: Re: Interesting low speed vibration, 5KQ and 5KTQ
>
>
>> Is there anything you can do at that speed that makes it NOT happen?
>> (steering, braking, clutch-in, etc.)
>>
>> Is it under braking as well as acceleration?  Is the vibration felt
>> throughout the vehicle or just in the steering wheel?  Is there  
>> any noise
>> associated with the vibration?
>>
>> Any chance one of the wheels isn't properly tightened?  If so, I  
>> pray you
>> check BEFORE the next road test!
>>
>> ~Mark
>>
>>
>>
>> On Wed, 28 May 2008 14:47:27 -0700
>>  "john at westcoastgarage.net" <john at westcoastgarage.net> wrote:
>>
>>  A new one to me, 86 5KTQ has a low speed vibration, feels like a
>>  driveshaft U-joint when leaving from a stop.  Throttle position  
>> isn't a
>>  factor, only speed.  After about 20 MPH, the vibration is gone.  
>> Doesn't
>>  matter whether you start out in first or second gear. I thought  
>> maybe
>>  we'd disturbed something when we did the clutch, but a phone call  
>> from
>>  another customer yesterday is making me rethink that conclusion.   
>> In his
>>  87 5KQ, the vibration appeared 7 years after the clutch job,  
>> leading me
>>  to believe it may not be related.  The driveshaft guy says it's  
>> not a
>>  normal symptom of a driveshaft failure, but these aren't  
>> something with
>>  which they deal with any real frequency.  Any hints/questions/ 
>> BTDTs out
>>  there that might help me solve this problem?  Lotsa miles on both  
>> cars,
>> BTW.
>>
>>  TIA, John
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