I looked at your last code dump and I didn't see a code 41/91 which would have been an O2 sensor problem.well o2s are reading lean when its not.
sry yes got 41/91 and 21 car was at 160/180 during the test with a 160 thermostat also got 12 and 13I looked at your last code dump and I didn't see a code 41/91 which would have been an O2 sensor problem.
Did I miss something since then?
Did you actually measure the voltage or is this what you are thinking?