Express 3/4 Ton Van V8-5.7L VIN R (1998)
The Accumulator Leak-Down System Does Not Hold A Charge
The Brake Self-Apply When You Turn The Steering Wheel
Hydraulic Booster Noise Diagnosis
The hydraulic booster uses fluid pressure from the power steering system. A malfunctioning power steering system can affect the hydraulic booster. A
malfunctioning booster can affect the steering system. Before beginning extensive testing, perform the following procedure.
1. Check all power steering and brake pipe connections for leaks and restrictions.
NOTICE: Power steering fluid and brake fluid cannot be mixed. If brake seals contact power steering fluid or steering seals contact brake fluid,
seal damage will result.
2. Ensure that the master cylinder is properly filled.
NOTICE: Power steering fluid and brake fluid cannot be mixed. If brake seals contact power steering fluid or steering seals contact brake fluid,
seal damage will result.
3. Ensure that the power steering pump reservoir is properly filled.
If the power steering fluid contains air, refer to Diagnosis of the Power Steering System in Power Steering.
4. Check the power steering pump belt for wear and improper tension. Refer to Diagnosis of the Drive Belt System in Engine.
5. Check the power steering pump pressure. Refer to Power Steering System Test in Power Steering System.
