Quote:
Originally Posted by Frank Lee
The O2 sensing circuit wouldn't correct?  |
yes and no... O2 sensors on most cars are narrow band sensors that can only paint part of the picture.
It would however send a signal to the ecu that the car is running lean, and if the condition could not be remedied by an adjustment within the realm of what the ecu deems as acceptable behavior, then it will throw a code and the CEL will light.
And if it's pre 1996 OBD1 electronics, it will put the ECU in closed loop.