Oil Pressure Check

WARNING: This page is about a different car, the 2006 Nissan Xterra. 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.
Oil pressure check should be done in "Parking position" (A/T models).

Check engine oil level. Refer to "ENGINE OIL LEVEL ".
Remove undercover with power tool.
Disconnect oil pressure sensor harness connector.
Disconnect harness connector at oil pressure sensor, and remove oil pressure sensor.
CAUTION: Do not drop or shock oil pressure sensor.

Fig 1: Disconnecting Oil Pressure Sensor Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
Install Tools.
Tool numbers
- : ST25051001 (J-25695-1)
- : ST25052000 (J-25695-2)
Fig 2: Installing Tools
Courtesy of NISSAN MOTOR CO., U.S.A.
Start engine and warm it up to normal operating temperature.

Check oil pressure with engine running under no-load.

NOTE: When engine oil temperature is low, engine oil pressure becomes high.

Engine oil pressure [Engine oil temperature at 80°C (176°F)]

ENGINE SPEED REFERENCE

Engine speed RPM	Approximate discharge pressure kPa (kg/cm² , psi)
Idle speed	More than 98 (1.0, 14)
2,000	More than 294 (3.0, 43)

If difference is extreme, check oil passage and oil pump for oil leaks .

After the inspections, install oil pressure sensor as follows:

Remove old liquid gasket adhering to oil pressure sensor and engine.
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)
After warming up engine, make sure there is no leakage of engine oil with running engine.