For 1990-2009 cars

Cause | Correction
--- | ---
Low oil pressure. |

1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing.
2. Repair or replace as required.

Detonation or spark knock. | Verify the correct operation of the ignition controls. Refer to Electronic Ignition (EI) System Diagnosis.
Loose torque converter bolts. |

1. Inspect the torque converter bolts and engine flywheel.
2. Repair as required.

Cracked engine flywheel. |

1. Inspect the engine flywheel and bolts.
2. Repair as required.

Connecting rod bearing clearance above acceptable tolerances. | Inspect the following components, and repair as required:

• | The connecting rod bearings

• | The connecting rods

• | The crankshaft

Crankshaft bearing clearance above acceptable tolerances. | Inspect the following components, and repair as required:

• | The crankshaft bearings

• | The crankshaft journals

• | The cylinder block crankshaft bearing bore