I have a '92 Vx, I have done all necessary procedures to fix bad idle... The only question is the PCV, when it is squeezed (the line between IM and the PCV itself) the cars idle wont jump, as I let go, it will jump... I have replaced PCV and it still only idles with it squeezed? Where does the line run under the IM? And would it being a Vx have anything to do with the black box mounted on the firewall behind the IM?