Oil Pressure Check

WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Be careful not to burn yourself, as engine oil may be hot.
Put the selector lever in the Park "P" position.

Check the engine oil level. Refer to "OIL LEVEL ".
Remove engine front undercover using power tool.
Disconnect the oil pressure sensor harness connector.
Remove the oil pressure sensor.

Fig 1: Removing Oil Pressure Sensor
Courtesy of NISSAN MOTOR CO., U.S.A.
Install Tools.
Tool number: ST25051001 (J-25695-1)

: ST25052000 (J-25695-2)

Fig 2: Installing Tools
Courtesy of NISSAN MOTOR CO., U.S.A.
Start the engine and warm it up to normal operating temperature.

Check the engine oil pressure with engine running under no-load.

Engine oil pressure [Engine oil temperature at 80°C (175°F)]

ENGINE SPEED REFERENCE

Unit: kPa (kg/cm² , psi)
Engine Speed	Approximate Discharge Pressure
Idle speed	More than 98 (1.0, 14)
2,000 rpm	More than 294 (3.0, 43)

CAUTION: If the difference is extreme, check the oil passages and oil pump for leaks and blockages.

After the inspections, install oil pressure sensor as follows:
1. Remove old liquid gasket adhering to oil pressure sensor and engine.
2. Apply liquid gasket and tighten oil pressure sensor to the specification.
  Use Genuine RTV Silicone Sealant or equivalent. Refer to " RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".
  
  Oil pressure sensor torque: 14.7 N.m (1.5 kg-m, 11 ft-lb)
3. After warming up engine, make sure there is no leakage of engine oil with engine running.