BOTH front calipers stuck ?

[Huw Powell]

> Does the 4kq have the rear brake proportioning valve that is connected to 
> the suspension (like a 5k)? Could be that Audi thought load based 
> proportioning was more important than the diagonal system.

No, they don't

>> Interestingly, the 4000Q's also lack the dual-diagonal system. Wonder
>> if it also had something to do with the quattro system, although
>> that's hard for me to imagine.

That is why, yes.  Q's are front/rear, like my chevy truck.  My fwd 
coupe and the others I had are dual-diagonal.  I have to replace about 
seven brake lines under the rear of my coupe to make it street legal...

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/