For 1990-2009 cars

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

• | Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .

• | Repair or replace as required.

Detonation or spark knock | Verify the correct operation of the ignition controls. Refer to Engine Controls.
Loose torque converter bolts |

• | Inspect the torque converter bolts and flywheel. Refer to Engine Flywheel Removal .

• | Repair as required.

Cracked flywheel (automatic transmission) |

• | Inspect the flywheel bolts and flywheel. Refer to Engine Flywheel Removal .

• | Repair as required.

Excessive connecting rod bearing clearance | Inspect the following components, and repair as required:

• | The connecting rod bearings; refer to Piston, Connecting Rod, and Bearing Cleaning and Inspection .

• | The connecting rods; refer to Piston, Connecting Rod, and Bearing Cleaning and Inspection .

• | The crankshaft; refer to Crankshaft and Bearing Cleaning and Inspection .

Excessive crankshaft bearing clearance | Inspect the following components, and repair as required:

• | The crankshaft bearings; refer to Crankshaft and Bearing Cleaning and Inspection .

• | The crankshaft journals; refer to Crankshaft and Bearing Cleaning and Inspection .

• | The cylinder block crankshaft bearing bore