Picked up the VX today. So far so good no weird holding on the rpms. I did not get to drive it but from the dealership home, bout 10 minutes everything was smooth. I'll give a report after I get some more drive time.
They replaced the sensor and I had them clean the throttle body and idle control valve also.
But it was the the sensor on the power steering pump (Switch Kit Pressure - Part# 8971883700) that was the culprit in my case. Fingers crossed that the wacky idle does not come back.
It's worth a shot to look into that sensor if your rpms are holding around 2K rpms.
Good Luck.
-Dave