1990 audi 80 -4cyl

[mskwara]

This is a continuation of  a problem recently submitted.  Engine is lean 
when cold, and have to enrich it by adjusting with 3mm wrench. 
After running, engine begins to flood out and have to lean it with the 
3mm wrench.  Have 12 volts on terminal of cold start valve and zero on 
the other pin, but it is not groung.  Tried to apply 12 volts to valve 
and groung, but still did not fire fuel.  Still looking  for the 
computeron my 88 parts car, but unable to find it.  Any idea where it's 
at and where do I go next to troubleshoot it??  Numerous parts replaced 
and changed, but symptom still exists.