I can't find the procedure and torque specs for replace the front O2 sensor and rear and the intake manifold on top and the throttle body.
Jun 15, 2021 at 7:48 PM
O2 sensor replacement instructions and torque specs needed
2008 NISSAN SENTRA
SKOOTER24
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Good morning,
I attached 2 pictures for you of the location of the sensors.
https://www.2carpros.com/articles/how-an-oxygen-sensor-works
They are torqued to 18-foot pounds of torque.
The front sensor is on the exhaust manifold. The rear sensor is downstream of the converter.
You need a 19 mm O2 sensor socket for the removal.
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Do not go cheap on the sensors. Aftermarket cheap sensors do not respond well. Try to keep to the original equipment sensors.
Roy
I attached 2 pictures for you of the location of the sensors.
https://www.2carpros.com/articles/how-an-oxygen-sensor-works
They are torqued to 18-foot pounds of torque.
The front sensor is on the exhaust manifold. The rear sensor is downstream of the converter.
You need a 19 mm O2 sensor socket for the removal.
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Do not go cheap on the sensors. Aftermarket cheap sensors do not respond well. Try to keep to the original equipment sensors.
Roy
Images (Click to enlarge)
Jun 16, 2021 at 3:26 AM
The VIN number is: 3n1ab61e38L719837.
Jun 16, 2021 at 11:45 AM
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It's also got a p0300.
Jun 16, 2021 at 2:50 PM
I attached the possibilities for you below for the misfires.
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
In most cases, you will need to check the fuel pressure to be sure the fuel pump is providing the correct pressure. I posted the pressure required below. You can rent a tester at a parts store for the test. If it is low, the pump will have to be replaced.
Fuel Pressure
Fuel pressure at idle .................... Approximately 350 kPa (3.57 kg/sq. cm, 51 psi)
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump
The fuel pump can be changed by removing the rear seat bottom cushion to gain access to the cover for the fuel pump.
Roy
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
In most cases, you will need to check the fuel pressure to be sure the fuel pump is providing the correct pressure. I posted the pressure required below. You can rent a tester at a parts store for the test. If it is low, the pump will have to be replaced.
Fuel Pressure
Fuel pressure at idle .................... Approximately 350 kPa (3.57 kg/sq. cm, 51 psi)
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump
The fuel pump can be changed by removing the rear seat bottom cushion to gain access to the cover for the fuel pump.
Roy
Images (Click to enlarge)
Jun 17, 2021 at 2:29 AM
And can I get the intake specs and throttle body and all that for this too? Because this one looks different than what is provided.
Jun 17, 2021 at 10:32 AM
I attached the intake and the throttle body specs for you below.
Roy
Roy
Image (Click to enlarge)
Jun 17, 2021 at 12:56 PM
The O2 sensor you have circled it shows bracket is 18 ft pounds and the sensor is 37. is that right?
Jun 17, 2021 at 6:01 PM
Correct.
Roy
Roy
Jun 18, 2021 at 1:30 AM
Would a air fuel ratio sensor bank 1 cause a random misfire in 2 or more cylinder?
Jun 18, 2021 at 8:35 AM
I doubt it very much.
As I stated before, I would verify fuel pressure. Low fuel pressure from a weak pump is the most common failure for that code.
Roy
As I stated before, I would verify fuel pressure. Low fuel pressure from a weak pump is the most common failure for that code.
Roy
Jun 18, 2021 at 8:38 AM
Oh, okay. thank you so much .
Jun 18, 2021 at 8:41 AM
You are welcome.
Always glad to help.
Roy
Always glad to help.
Roy
Jun 18, 2021 at 9:05 AM