Originally Posted by wydopnthrtl
No. The 02 sensor is for the whole bank (or side) of the engine. These are narrow band sensors and can't identify an individual cylinder misfiring. A good quality wideband could.. but not the stock one. The 02 sensors are only *part* of what the PCM uses to adjust timing, fuel, and the IAC. It also has adaptive learning which semi-overides immediate inputs like a cylinder mis-fire.
IMO.. I'd go looking for a intake gasket leak. Or possibly a flaulty injector. You might try swapping injectors and see if the problem follows it.
Rich, wideband sensors are much faster than the "standard" O2 sensors, but the location of the O2 sensors measures an average of all the cylinders in the bank. To be able to measure individual cylinders, the O2 sensors would have to be located at the cylinder exhaust port. The O2 sensors have NOTHING to
do with the IAC control voltage....
The PCM looks at signal phase shifts from the camshaft position sensor to determine which cylinder misfires.