Oil Pressure Test
If the oil pressure warning light stays on with the engine running, check the engine oil level. If the oil level is correct, then us following steps;
- Connect a tachometer or a scan tool.
- Remove the engine oil pressure switch and install an oil pressure gauge (A). See Fig 1.
- Start the engine. Shut it off immediately if gauge registers no oil pressure. Repair the problem before continuing.
- Allow the engine to reach operating temperature (fan comes on at least twice). See ENGINE OIL TEMPERATURE & PRESSURE table.
- If oil pressure is NOT within specifications, inspect these items:
- Oil screen clogging.
- Oil pump. See OIL PUMP under ENGINE OILING.
ENGINE OIL TEMPERATURE & PRESSURE
| Application | Specification | |
|---|---|---|
| Engine Oil Temperature | 176°F (80°C) | |
| Engine Oil Pressure | ||
| At Idle | 10 PSI (70 kPA) | |
| At 3000 rpm | 71 PSI (490 kPA) | |