Problem: Fast idle, about 1,200 RPM in drive and 3,000 RPM in Neutral.   Intermittently at first, first time was a surprise.  Historically I know that on the pre-1996 Northstars, this is due to the ISC Motor or Idle Speed Control.   Our friend and member @Barry94  did a terrific write-up back in 2005 that has always been helpful in understanding and diagnosing the ISC motor.  This thread was a walk down memory lane for me.  So many members I had gotten to know in this thread, that contribut