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re:20v RPM's not dropping

Brooks Ellis asks about the rpms not dropping in a 20V motor. 
Check the idle stabilizer, a small black box which resides under
the throttle body.  The mounting screws have a tendency to fall
out, letting the stabilizer drop down against the exhaust manifold,
consequently baking the unit.  If its not fried, you can remount it,
make sure you use some loc-tite.  If it is fried, you need a new
unit, don't know how much.  Make sure all vacuum lines get
connected when it goes back together.

Alex Chernushin
'90 Coupe Quattro, Lago Blue