Restricted flow will cause a whine
A power steering reservoir for the Chrysler Grand Voyager 3.3i 2001 to 2006 and Voyager 3.3i 2001 to 2004 is available from Blue Print. When this filter becomes contaminated and partially blocked, flow is restricted and this usually results in an abnormal whine from the power steering pump which tends to be worse from a cold start-up and at slow speeds. As long as the pump hasn’t been starved of fluid for too long, the problem can be fixed with a replacement reservoir which has a new filter and the addition ofsome fresh fluid. Before fitting this direct replacement part, the firm advises that you drain as much of the original fluid from the system as possible before filling with fluid of the correct specification.