My a/c belt broke and I replaced it, but now only the passenger side of the car blows cold air. Had a friend check the system and he added a can of freon(coolant). The passenger side was getting down to about 45 deg with the windows open and about 90 outside, drivers side barely was cool. Do I need to reset something? I figured what one side did so would the other unless adjusted. Any ideas? Anyone seen this before?