my wifes voyager makes a really awful sound when manovering at low speed,reversing of the drive and then moving off on lock. it also makes a wooshing noise some of the time when also moving off. the local garage seem to be baffled. i'm in the process of replacing the shocks to the front and also a wheel bearing/hub unit on the n/s/front. any help would be great. thanks in anticpation rob