I had a jetta that would do that when cold.
The problem turned out to be the speedometer itself.  I tamed the problem by squirting some oil into the speedometer where the cable entered.  It helped, but it still made noise when cold.  After that, the car became my ex-wife's problem, so I don't know if it was ever completely fixed.

Bill

---------- Original Message ----------------------------------
From:         John Rodgers <inua@CHARTER.NET>
Reply-To:     John Rodgers <inua@CHARTER.NET>
Date:          Fri, 19 Oct 2007 05:54:55 -0500

>Could be the box. Could be the cable.into the box or the one out of the
>box to the speedo. Is your speedo needle steady or eratic?
>
>John Rodgers
>88 GL Driver
>
>Chris Snyder wrote:
>> Howdy List,
>>
>> Here is a subject I haven't heard much about on the list. Maybe it's because
>> only one or two model years are involved.
>>
>> I have a 1987 Wolfburg and for a while now (Months) I get this "Squalling,
>> like a dry bearing???) from the front of the van. I have replaced the front
>> wheel bearing but, that did not cure this problem
>>
>> I do not know how to describe the sound any better then a dry bearing noise.
>> It only does it some times then it goes away and I won't hear it for days or
>> weeks. It's not weather related nor heat related.
>>
>> My thinking is maybe the gear box for the OXS sensor that the 1987 had is
>> needing oil/greese but I don't know how or what to put in it. I can't distinguish
>> that it's coming from one side or the other.
>>
>> If it's not that the I am real stumped. Hope someone can help and perhaps
>> shed some quiet on this noise.
>>
>> Thanks in advance,
>>
>> Chris Snyder   </HTML>
>>
>>
>>
>