When to replace the front O2 sensor on a Nissan?
I replaced the front sensor, and all is now good. They should be replace anyway if they have 100k+ miles on them, since a tired/slow front O2 sensor can decrease gas mileage and decrease the lifetime of the catalytic converter. Lucky for you, the front sensor on the right side (P0420) is easier to change.
How can I fake an O2 sensor on my car?
Install the dummy O2 sensor (also called an O2 sensor simulator) by turning it clockwise into the exhaust just as though you were installing a regular O2 sensor. Connect the electrical wiring to the dummy sensor. Lower the vehicle to the ground and start the engine.
What is the correct O2 sensor voltage reading?
Sensor 1 on this engine IS NOT a O2 Sensor, it is a AIR/FUEL RATIO SENSOR!!! This sensor works very differently than a O2 Sensor, it outputs a steady voltage, it DOES NOT swing rapidly like a O2 Sensor. That being said, according to the Nissan Shop Manual the correct voltage for the AIR/FUEL RATIO SENSOR should be 1.5Volts at optimum.
Is the pre cat sensor an O2 sensor?
The 2005 Nissan shop manual ONLY shows a A/F sensor for the pre cat sensor and a O2 sensor for the post cat sensor. The dealership carrys 2 A/F sensors for the 2005 X depending on build date. Not a O2 sensor for pre cat. For Nissan to go back to an O2 sensor for pre cat would be like going back to vacuum tubes.
What does the O2 sensor on a Nissan Pathfinder do?
An o2 sensor for Nissan Pathfinder works hard, but once it’s covered in dirt and carbon it can’t be cleaned or repaired. AutoZone’s Pathfinder oxygen sensors measure the oxygen in your rig’s exhaust so your vehicle’s computer sends the optimum mix of air and fuel to your engine.
Sensor 1 on this engine IS NOT a O2 Sensor, it is a AIR/FUEL RATIO SENSOR!!! This sensor works very differently than a O2 Sensor, it outputs a steady voltage, it DOES NOT swing rapidly like a O2 Sensor. That being said, according to the Nissan Shop Manual the correct voltage for the AIR/FUEL RATIO SENSOR should be 1.5Volts at optimum.
The 2005 Nissan shop manual ONLY shows a A/F sensor for the pre cat sensor and a O2 sensor for the post cat sensor. The dealership carrys 2 A/F sensors for the 2005 X depending on build date. Not a O2 sensor for pre cat. For Nissan to go back to an O2 sensor for pre cat would be like going back to vacuum tubes.
Where is the oxygen sensor in the engine?
An Oxygen sensor that is between the catalytic converter and the engine is known as an “upstream” sensor. Oxygen sensors after the catalytic converter are “downstream sensors”. As a rule, the upstream sensor is more important for engine timing and air/fuel ratios.