When I hook up a snapon scanner tool (modis edge) the data reads like it is accurate for a minute or two but then it starts jumping around like the pictures and I can't isolate anything because of it. I have an O2 sensor code but look at the other data the ECT is clearly not -38 degrees. And all of the PIDs do this, one extreme to the next. and it is pretty consistent not jumping back and forth fast like a loose ground. Also zero change in engine idle or anything while this is happening so I don't know if this is a ghost or what? I've checked so many ground wires and cleaned and reconnected and jiggled and no change. Anyone else run into this? TIA
