Problem with a audi 90 quattro 2.3

[Guillaume LE PETIT <flpa@world-net.sct.fr>]

Sir,
  
   I have lot of problems with my audi 90 quattro 2.3.
I changed twice my "joint couvre culasse"(french) and
i have a problem with the differential command block,
the light is always on even if i don't use it. 
I changed the electronic circuit and it was ok and now
after 2000 kms the problem appears again.
   My car as done 50.000 kms.
   Do you know this kind of problem, is it frequent and
could you help me to solve it ?
   My address :

     F. MICHEL
     15, rue Bokanowski
     92600 Asnieres/seine
     FRANCE

   Sincerly yours,
                    F. Michel




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Dan Simoes			          dans@ans.net
ANS CO+RE Systems, Inc.		  http://coimbra.ans.net/dans.html
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