air conditioning

[Venkatesh Tanjore]

hi ,
I have audi 100cs Q,(1992) model. It seems there is a problem with my A/C . 
When i keep 63deg it doesn't maintain 63. some times it heats up.. some 
times it cools.but if i want cool air i should always keep temp to LOW. Is 
it working fine. I assume that if keep 63deg on monitor it should maintian 
63 inside my car. So if there is a problem what is it..Can anybody help me 
on this..

Thanks
Venkat
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