I have a 1984 MB 300 TD the A/C worked fine last summer. But it now just blows warm air. I took it to the machenic. First he told me it was the A/C compressure. So he replaced it with the new one along with the Dryer. He also put in the R-12. After all that done, the problem still exists. He came back and told me that the evaporator is also the problem. At this point I don't have any more confident in him. Could anybody tell me if I need a second opinion? or could anybody tell me what is the source of A/C problem? The machenic also mentioned something about the pipe might have cloqqed up that might lead to the damage of the Evaporator. Like I said I lost fate in this guy... Please help...