Oil Pressure Test

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2009 Honda S2000, 2008 Honda S2000, 2007 Honda S2000, 2006 Honda S2000, and 2005 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.

If the oil pressure indicator stays on with the engine running, check the engine oil level. If the oil level is correct:

Remove the engine oil pressure switch, and install an oil pressure gauge (A).

Fig 1: Identifying Oil Pressure Gauge
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem before continuing.
Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should be:
Engine Oil Temperature: 176 °F (80 °C)

Engine Oil Pressure:

At Idle: 250 kPa (2.5 kgf/cm ² , 36 psi) min.

At 3,000 RPM: 590 kPa (6.0 kgf/cm ² , 85 psi) min.
If oil pressure is out of specifications, inspect these items:
- Inspect the oil pressure relief valve (see OIL PUMP OVERHAUL ).
- Check the oil filter for clogging.
- Inspect the oil pump (see INSPECTION ).