I changed the cap and roter afew hundred miles ago. The wires look older than dirt aka: original. Idle does change when I unplug the OVP. But it could still be a culprit. Another notion I am entertaining is the air pot. On my old 2.3 their was a bit of play, in that it could be pushed down about a centimeter or so. However on this car that flap has no play. Which could lead to problems with the fuel distributer. I can "help" the flap up. But it does not have that "spring" action that the other car, and my neighbors 300 E has. Comments? Suggestions?