Cruze

Oil Pressure Diagnosis and Testing - 1.4L LUH and LUJ

Special Tools

For equivalent regional tools, refer to Special Tools

1. Disconnect the oil pressure indicator switch wiring harness plug.



2. Remove the oil pressure indicator switch (1) and the oil pressure indicator switch seal ring (2).

1. Install EN-498-B gauge (1) along with EN-498-3 adapter (2).
2. Start Engine.

Note: The oil temperature should be between 80°C and 100°C.

3. Measure the oil pressure:

•	The oil pressure at idle speed should be 150kpa (22 psi).

•	The oil pressure between 3000 - 3500 rpm should be 380 - 650 kpa (55 - 94 psi).

4. Stop engine.
5. If the engine oil pressure is below specifications, inspect the engine for 1 or more of the following conditions:

•	Oil pump worn or dirty. Refer to Oil Pump Replacement and Engine Front Cover and Oil Pump Cleaning and Inspection .

•	Oil suction gallery clogged or dirty. Refer to Sump Cleaning and Inspection

•	Cracked, porous, or restricted oil galleries.

•	Oil pressure relief valve malfunction.

6. Remove EN-498-B gauge and EN-498-3 adapter.

1. Install the oil pressure indicator switch and a NEW oil pressure indicator switch seal ring.

Caution: Refer to Fastener Caution in the Preface section.

2. Tighten the oil pressure indicator switch to 20 N·m (15 lb ft).