Hi All,

   I'm having trouble with the idle on a didget.  The idle is erratic and
goes from 1500+ to an immediate drop to 1000 and continually cycle quickly
like that.  I did the test for the aux air valve as per Bentley and it
pointed to that.  I have been driving with that hose pinched off and it
idles and starts just fine.(20-50F)  When I replaced the aux air valve, the
same symptoms appeared so I pinch off the hose again.  I am getting 12+
volts to the air valve.  The air valve closes out of the van with 12v
connected, as it should.  I could not find any vacuum leaks.  My tail pipe
is blacker than normal and mileage might be down 1-2mpg.  The temps sensors
were fine.  I did not get a chance to check the fuel reg. yet, that's next.
  Any ideas?

Thanks,
Larry