A1 Cardone 96-5419 Power Steering pump Manufactured with premium grade, high temperature seals for added durability under normal and extreme driving conditions 100% computer load testing ensures optimal performance and durability by incorporating real-world parameters during the test cycle of the pump Precise bushing alignment prevents premature shaft and seal wear, significantly reducing noise and vibration Units are supplied with reservoir and cap, where applicable, for faster installation and to prevent contamination from trapped debris The pulley may have cracked upon removal. If the shaft was mushroomed before removing the pulley, it has now enlarged the bore in the pulley. The pulley must be replaced. There may be debris in the flow control valve bore not allowing the flow control valve to move as it should. (Valve and bore are located behind the high pressure fitting on the pump). The system must be checked for contamination and flushed. Use the correct fluid type that meets O.E. specifications for your vehicle Flush system with approved fluid to remove debris and contamination Install a filter to eliminate potential restrictions from debris Check for collapsed hoses that could potentially cause a restriction Always replace sealing O-Rings Never use Teflon tape as an attempt to seal fittings Leaks Lack of power assist while turning the wheel Whining, groaning or squealing noises from the pump Power assist only with increase in engine rpm