Hi I need pointers on what could be causing my aircon woes. I had my whole diavia compressor changed and the drier was replaced and pipings checked etc in May this year. Now the aircon doesn't come on immediately - only after say 10 to 15 mins on the road. When it does come on, the coldness is the same as before so this must rule out refrigerant gas leak issues. What could be my problem so I am not taken for a ride by some of these 'change everything' mechanics. Any advise appreciated.