TLowe thanks for responding. I forgot to mention that I used 2 different brand and style of voltmeters with the exact same result. I have a third kind of meter that I could try in a few days but to be honest I think the results will be the same. How much does just the wide band sensor cost? When the sensor in the car goes low after pulling away from a light or when closing the throttle some like at the top of a hill it doesn't just go to 0 instantly. It takes a few steps to get there. Same thing when cruising and the throttle is opened some. It takes 3-4 steps to get to 900mv then just hovers in a 50mv or so range. Jay
