Does anyone have a good way of testing an O2 sensor to see if it is good (SteveT ?????)? I know this is a Nissan group (want this info because our 96 Chevy truck is throwing codes), but figured the advice would be relevant to any auto group. By the way I replace the heater core on my
84 300ZX over the Christmas holiday and am very happy that I haven't had any leaks out of it. I sure as hell don't want to have to do that job again.