JO, if l push the throtle and kill the engine the rich reading stays for a couple of minutes even thugh there is no flow trugh the sensor.
Bob, the top, original tb system is as l found it when l bought the car. And the original TB is air tight. Untill the gas pedal is pressed more thain 50% that is.
JO, l see you both suffer wery much
Steve, yes it shows anywhere from 2000mv up to 500v, you set the range by soldering some jumpers on the back side. Ha, cant help you with the link. I am old fasioned and not a fan of internet buying, whenever l can l like to see the product before buying.