A vehicle that is in tune will, quite obviously, run better than one that is not. While many car owners know to change the obvious parts, such as the oil and air filters, and the spark plugs, there are a number of less well known components on a vehicle that must see maintenance if the car is to stay in a finely tuned state. The Nissan 240SX is a fine example of a vehicle that came well-tuned from the factory.

While early models of the 240SX were criticized as being somewhat anemic, they offered a good compromise of power and fuel efficiency. A key part of achieving that balance is keeping the fuel to air mixture in harmony.

The final check on the system is the Nissan 240SX’s oxygen sensor. Situated on the exhaust in front of the catalytic converter, the oxygen sensor measures the ratio of exhaust gases to oxygen as it exits the engine. If the sensor detects too much oxygen, it will increase the amount of fuel injected into the combustion chamber; too little, and it decreases the fuel. Through this constant measuring and adjusting of the mixture, the engine achieves maximum efficiency. A faulty oxygen sensor will cause the engine to stumble and you will notice a drastic decline in your gas mileage. Generally, when an oxygen sensor begins to fail, it will not detect the oxygen in the exhaust mixture, and will increase the amount of fuel. Inadequate air means that not all of the fuel is burned, which can ultimately lead to buildup of deposits within the piston chamber, further damaging the engine’s performance. Nissan 240SX oxygen sensors do not need to be replaced all that frequently, but they do have a regular service interval.You can order a replacement Nissan 240SX oxygen sensor today from our convenient 24/7 online ordering system.