I have a 1.9TDi Ghia 130bhp Galaxy. Recently it has started to judder between 40-50 mph. If I accelerate past 50 mph, the juddering disappears. The fault is intermittent and engine temp makes no difference, neither does how hard I accelerate. Also, the gearbox has always made a metallic whining noise when accelerator is released. This may or may not be related. Anyone got any ideas?