80 L5-2309cc 2.3L SOHC (NG) (1991)
3.
Reconnect oxygen sensor harness. Record mA value and compare with the value obtained with the sensor disconnected. If the difference between
readings is more than +/-3 mA.
4.
Adjust CO by turning mixture adjusting screw with tool P377 or equivalent. Adjust CO% to +/-1 mA of reading taken while oxygen sensor was
disconnected.
NOTE: If the reading with the oxygen sensor disconnected was 4 mA, and the reading with the oxygen sensor connected was 0 mA, the difference
would be 4, making an adjustment necessary. An adjustment of 4 +/- 1 mA (with the oxygen sensor connected, would be required.