I checked all 3 of my O2 Sensors, each harness has 4 wires, I check each of the two top black wires on each harness. using my volt meter, I set it to ohms, I warmed the car up a little then I checked. they are all at 13.4-13.5 now. If I warm it up more it'll go up higher to 16, but didn't push it. My car starts up without issues, accelerates without issues. wouldn't I have acceleration or starting issues if my 02 were bad? let me know if I should check again when its fully cold(currently ambient weather is low 50f here midwest). I guess I could also disconnect one harness, connect an ohm meter, start the car and let it warm up and see how far the ohm numbers climb
thanks!