I checked out all of the electrical connections. Inspected and resoldered the OVP and Tested the o2 sensor. Everything checks out. Something told me it would be a good idea to pull plug wires while it was running. Not sure why I thought it would be productive. The 2nd wire gave me a few light zaps. I was several inches away from the conductor holding on to the metal shield. The wires all tested fine resistance wise and look pretty good. Should I be getting wires for this thing? While testing the o2 sensor signal, I noticed that whenever there would be a slight rumble in the idle, the voltage would go up for a second. could this mean an injector problem or an ignition problem? The car always seems like it is getting plenty of fuel.