Test K: Pump Noise

Possible Causes

• Incorrect assembly of components.
• Imperfections on the outside diameter or end surface of the power steering pump rotor.
• Damaged or worn power steering pump rotor splines.
• A crack on the inner surface of the power steering pump cam.
• Interference between the power steering pump rotor and cam.
• Damaged or worn power steering pump rotor and pressure plates.

Inspect pump for mechanical defects, replace pump if damaged. See POWER STEERING PUMP  under REMOVAL & INSTALLATION.