My 2002 Turbo S has a air problem! it has always blown ice cold air and the other day it just started blowing "ambient" temp air. Its not hot or cold. I just replaced the fusebox on top of the battery...I bought some r1345 with the gauges attached to it. The gauge reads 60psi on the low side and I haven't added anymore air. I have checked all the fuses. I have read about the blend door maybe being stuck or something but not sure where that is...any ideas on what might be happening? I sure don't wanna go spend $1000 on it but I cant drive it without ac!!!