Audi 90 Quattro 1990, California Edition

[John Larson]

On 5/30/2013 10:28 AM, Tony Hoffman wrote:
> The only two options I see are ABS and non-ABS. If you have an "ABS Off"
> swtich in the dash, you have ABS.
>
> ABS part #:893 611 021A, Brake Master Cylinder
> Non ABS part #:441 611 021A, Brake Master Cylinder
>
> Your car has vacuum assisted brakes.
>
> HTH,
> Tony
>
>
> On Thu, May 30, 2013 at 9:11 AM, Olli <olli.eloranta at pp.inet.fi> wrote:
>
>> If you wonder, my car has spent its early years in California - which is
>> hardly the cause of its brake problems. I have 2 inter-related questions:
>> 1. As I am looking for a Master Brake Cylinder, would anybody have a
>> suitable specimen?
>> 2. The questions I get, when trying to find a replacement, is whether the
>> braking system is working on vacuum or hydraulic servo. as a non-technical
>> person i do not know the answer. Advice appreciated. Olli
>> ______________________________**_________________
>> quattro mailing list
>> http://www.audifans.com/**mailman/listinfo/quattro<http://www.audifans.com/mailman/listinfo/quattro>
>> http://www.audifans.com/kb/**List_information<http://www.audifans.com/kb/List_information>
>>
A model year 1990 Audi 90Q is a 20v, and has hydro assist brakes, not 
vacuum assist.  I believe ABS braking was a part of the package.

John