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In message <> vytas@email.nist.gov writes:

> Still researching the high idle problem on my 86 5kcst. Used ISV
> diagnostics as Phil kindly posted earlier. With ignition on the valve is
> receiving about 3V and consumes 870mA. It is about 1mm open at that.

870ma is _much_ too much.  430ma is the target, and 470ma 'emergency mode'.
But it's not a straight DC voltage - '430ma' is actually an _average_ current.  
Is it possible that your meter is reading peaks?

 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club