Frontier 2WD V6-3.3L (VG33E) (2003)
Engine Oil Pressure: Testing and Inspection
Oil Pressure Check
WARNING:
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Be careful not to burn yourself, as the engine and oil may be hot.
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Oil pressure check should be done in "Neutral Position" (M/T) or "Parking Position" (A/T).
1. Check oil level.
2. Remove oil pressure switch.
3. Install pressure gauge.
4. Start engine and warm it up to normal operating temperature.
5. Check oil pressure with engine running under no-load at idle speed and at 2,000 rpm.
Engine oil pressure [oil temperature at 80°C (148°F)]
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If difference is extreme, check oil passage and oil pump for oil leaks.
6. Install oil pressure switch with sealant.
Oil pressure switch: 12.25 - 17.15 Nm (1.3 - 1.7 kg-m, 9 - 12 ft. lbs.)