SAAB WIS ONLINE

Engine Noise Under Load

Engine Noise Under Load


Cause Correction
Low oil pressure


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

2. Repair or replace as required.


Loose torque converter bolts


1. Inspect the torque converter bolts and flywheel.

2. Repair, as required.


Loose or damaged flywheel, automatic transmission


1. Inspect the flywheel bolts and flywheel.

2. Repair, as required.


Excessive connecting rod bearing clearance

Inspect the following components and repair, as required:


• The connecting rod bearings

• The connecting rods

• The crankshaft


Excessive crankshaft bearing clearance

Inspect the following components and repair, as required:


• The crankshaft bearings

• The crankshaft journals

• The cylinder block crankshaft bearing bore


Excessive piston-to-cylinder bore clearance


1. Inspect the piston rings for low ring tension, broken or worn rings, inspect cylinder bore.

2. Repair or replace all damaged components.


Excessive crankshaft thrust bearing clearance


1. Inspect the crankshaft end play and crankshaft thrust bearings.

2. Repair or replace all damaged components.