240 L4-2127cc 2.1L SOHC B21F (1982)
Oxygen Sensor: Description and Operation
Fig.19 - Oxygen Sensor Sectional View
The oxygen sensor monitors the composition of the exhaust gases leaving the engine.
Signals from the oxygen sensor are transmitted into a closed loop feedback system which continuously adjusts the air/fuel ratio to reduce emission
of hydrocarbon (HC), carbon monoxide (CO) and nitrous gases (NOx).
The oxygen sensor must be replaced every 30,000 miles.
