Steve, thanks for your reply, could you please elaborate on the "load related mounting problem or universal/Cv joint problem"? To me, personally, the sound does not really sound like a form of vibration at all. It sounds more like slipping, the first thing that came to my mine was the fan belt. After having checked it, I discovered that it was not loose. So I came to the conclusion that it could be the TC. Thanks, any help is greatly appreciated.