2PCS NOx Nitrogen Oxide Sensors for Caterpillar CAT Excavator 539-0117 539-0118

  

Will Fit for Following Models. C4.4 C7.1 GEN XQ230. C13 C13B C15 C18 C3.6 C4.4 C7.1 C9.3 C9.3B. 416 420 420XE 428 430 432 434 444. 313 315 320 320 GC 323 325 326 330GC.

Symptoms of a Faulty NOx Sensor. Check engine warning light on the dashboard is the most common reason why car owners are led to believe their NOx sensors are faulty. This light is usually triggered by problems with electronic components of your car, including emission control components, which include the NOx sensor. If your car's NOx sensor is faulty, you will notice an increase in fuel consumption. This usually happens after the engine acquires higher pressure within its cylinders to compensate for the lack of proper sensors readings. When a NOx sensor fails, it sends the wrong information to the ECU, which results in too much fuel being injected into the cylinder.

Your car will start to use more gas than usual to keep its engine running smoothly, and it goes into limp mode by limiting its RPM. Engine Misfire & Soot Buildup. A sudden misfire may be due to a faulty NOx sensor. This usually happens when the o2 level in the exhaust is below the minimum threshold level for proper fuel combustion.

NOX sensors are one of the most costly components in diesel exhaust systems. This results in a buildup of soot which becomes difficult to remove without changing the complete system (including the exhaust). Uneven acceleration is another symptom that might indicate a damaged NOx sensor.

This is because the motor will use additional fuel to compensate for insufficient sensors readings. In turn, your car accelerates unevenly and causes jerking when you press on the gas pedal. Spending a few dollars to get a new nitrogen oxide sensor will get you a better reading of the NOx levels in the SCR system of your vehicle as well. These SCR components can also cause a car to jerk when accelerating and lead to other failure issues.

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