sonny30

I have an is200 X reg. The air con works, but only when IT feels like it! . I took it to a garage last week and the guy said that the pressure was very slightly low and he added dye and repressurised it. Seems a genuine guy, wouldn't take any payment. He said it could be an intermittent fault. Seems to me like a stat or something is holding it off. any ideas please?