Two weeks ago my VX started to idle at 3500 rpm , and the engine would shut off if I had it in gear with my foot on the brake . Prior to this happening I had replaced a plethora of components that were suspect for erratic idle.

So, last week I discovered that my battery terminals were loose ,despite the fact that the nuts that tighten them down were tight as they could possibly be . So I replaced the terminals and now the VX is back to normal . YAY!