Hi RL...I have done what you sujested...Ran the enginine with A/C on and let some of the gas out...it was strange it seemed more like air...I know when the tech gassed it he said there was a dye in it...I thoiught I would have seen some of that ..but didnt...still no joy..it was as warm as toast inside the car..I wonder if it might be the climate controller.....if I turn it to full heat....it gets hot...but when I turn it down..it takes ages for it to return to the outside temp....I wonder if the tech gassed it correctly....having said that it didnt work before he gassed it ...so it might be a trip down to MB...for a check up....Thanks for all your help.....Dax.