Was driving the wifes car today with her as a passanger 08 plate 150 cdti, it's very nippy with a sports button good low down power, anyway, noticed a noise coming from the car, sounded like it was at the offside front, seemed intermittant, so parked up when we got home and lifted the bonnet, a bit pointless on a oil burner as there is too much chatter, couldn't see anything amiss, gave the tyre a good tug and no movement, jumped back in and turned air con off, noise gone ?, turned back on and the bag of spanners was in full sound again , to me it sounds like the compressor is not running right and seemed to be starting and stoppping sounds awfull, aircon in cab is ice cold, so it's full of gas, we have only had the car a few weeks and is covered buy manufatures waranty until july then uncle arnolds waranty takes over, any suggestions of what it could be or is my thoughts right.