The Oxygen Sensor installed in Jeep Cherokee automobile helps the engine control computer to know the quantity of unburned oxygen in the exhaust and hence adjust the air to fuel mixture for better performance and lowered emissions. The sensor provides a voltage signal corresponding to the degree of oxygen concentration, this allows the engine to work in 'closed loop', which in its turn increases the effectiveness of the catalytic converter. It is likely to find out that Jeep Cherokee models use zirconium dioxide oxygen sensors which can be of narrow band and wide band types. The first kind of sensors produce the signals that are off-on-off or on-on-on and the second kind produces a range of signals that are from rich to lean. Oxygen sensors may degrade through oxidation over time as the result of exposure to contaminants and, as a consequence, fuel consumption rises and emissions are boosted as well. The Jeep Cherokee's oxygen sensor should therefore be checked frequently in order to ensure that the vehicle is running efficiently.
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