O2 sensors acquire been installed on Nissan trucks thanks to the early 1980s. In 1995 and 1996, an further sensor was added to watchdog the catalyst efficiency. V-6 and V-8 engines in Nissan trucks can instantly accept as many as three or four sensors. The upstream sensors are generally in the manifold(s) (two manifolds with V-6 and V-8 engines) or fair-minded below it. The downstream sensors are located conscientious last the catalytic converter(s). It's viable for a do-it-yourselfer to alternate these sensors.
Instructions
1. Grounds the Nissan Motor lorry up onto two automobile ramps and practice the parking brake. Unlatched the hood.
2. Abode a turn block carry on one of the rear tires.
3. Crawl underneath the Motor lorry with all the tools and a brace of safety glasses on. Set the sensor you committal to alternate.
4. Spray the threads of the sensor with a equitable immensity of penetrating lubricant and concede 5 to 10 minutes to soak in. Repeat this manner whether needful.
5. Place the wire harness plug of the O2 sensor and disconnect it.
6. Apply an oxygen sensor socket and a flex-head ratchet for upstream sensor Emigration or a 22mm box-end wrench for downstream sensor removal. Close the hood and drive the truck as normal. The service engine soon light will reset within 50 to 100 miles, or you can take it back to the parts store and have it reset for you.
Screw the new sensor into the exhaust port. Most quality replacement sensors will have a slight amount of anti-seize compound on the threads of the sensors right out of the box. Don't get the compound onto the thimble tip of the sensor. If the sensor does not have compound on the threads, it's recommended to put a little on them for future replacement repairs.
8. Tighten the sensor using the ratchet or wrench. Be extremely careful not to overtighten the sensor. The threads are very delicate and there are only four or five threads, so it's easy to strip them out. Tighten them snug only. Plug the sensor wire back into the wire harness.
9. Remove the wheel block and lower the truck to the ground. Turn the sensor counterclockwise to remove it from the exhaust port. If using the ratchet and sensor socket, place the wire of the sensor into the slot of the socket. For the 22mm wrench, feed the wire through the wrench before placing the box-end side onto the sensor.7.
