Hi, I am new on here and have just purchased a 1984 Audi Coupe, its been modified quite a bit but my main concern is the a/c, when I bought the car in Georgia it was around 50 degrees and in a warm shop, the a/c kicked in fine, i took it back to PA on a trailer the same day in temps of around 35 degrees and the a/c does not kick in. are these systems governed by cold outside temps? I have owned quite a few 80,s Audis but they were all in the UK with no A/C, I have a few more issues with it such as wheel configurations but will keep each issue seperate. thanks very much !!