hi I’ve got a xc60 58 plate just had it for 2 months it’s a 2.4 d5 it’s got a problem every now and again it gets stuck at a certain speed usually 50ish and you can put your foot down on the accelerator all you like but it doesn’t go even if you hit kick down it drops a couple of gears but stays the same speed until you stop an turn it off and on again has anyone got any ideas please