Engine Oil Pressure: Testing and Inspection

Engine Oil Pressure Test

Special Tools Required

- Pressure Gauge Adapter 07NAJ-P07010A
- Oil Pressure Hose 07ZAJ-S5AA200
- A/T Low Pressure Gauge w/Panel 07406-0070301
- A/T Pressure Test Hose 07AAJ-PY4A100
- A/T Pressure Adapter 07MAJ-PY40120
- Pressure Gauge Adapter 07NAJ-P07010A

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

1. Remove the oil pressure switch Service and Repair.

2. Install the oil pressure hose, the A/T low pressure gauge w/panel, the A/T pressure test hose, and the A/T pressure adapter as shown, then install the oil pressure switch to the pressure gauge adapter.





3. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem before continuing.

4. Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should be:









5. If oil pressure is not within specifications, inspect these items:

- Blocking of oil filter.
- Blocking of oil strainer.
- Inspect the oil pressure relief valve Service and Repair.
- Inspect the oil pump.