1. Loss of electrical power: The alternator is responsible for generating electrical power for the vehicle's electrical systems, including the power steering pump. If the alternator fails, the power steering pump will not receive the electrical power it needs to operate, and the steering will become heavy.
2. Loss of hydraulic pressure: The power steering system also relies on hydraulic pressure to assist with steering. If the alternator fails, the power steering pump may not be able to generate enough hydraulic pressure, which will also cause the steering to become heavy.
3. Damaged electrical wiring: If the alternator fails, it can damage the electrical wiring that supplies power to the power steering pump. This can also prevent the power steering pump from receiving the electrical power it needs to operate, and will cause the steering to become heavy.
If you have recently had your alternator replaced, it is important to have the power steering system checked by a qualified mechanic to ensure that it is functioning properly.