Hi W van Zyl I'm from Cape Town. Greetings! Danie

Hi Greetings from Cape Town, South Africa! My Disco II Td5 auto (2002 model) has developed a "rumbling vibration" between 100 and 110 km/h. It starts when I reach 100 km/h and disappears again above 110 km/h. It does not disappear if I take my foot off the accelerator, but only goes away once...