I am having trouble with my new vcm wideband not reading correct.
when I put a 1.5v battery across pin 1&5 I read 12.45 afr
when I plug in the vcm wideband I get 10.01 in fresh air, shouldn't this also read 12.45?
when I start the car it reads 17-19 afr but the car is very rich at idle, o2 sensors are reading .999