My 97 max has a serious a/c problem.  I live in florida where it is 92
everyday with 75% humidity in the summer.  When I turn my a/c on, it blows
warm air and then after a few minutes, it will blow cool air, then a few
minutes later it will blow warm air again.  On occasion, when I turn the
a/c on, it will only blow warm air.  I have had it to the a/c shop twice
and they told me that the a/c is full of refrigerant and there are no
leaks.  The a/c guys can't figure out what the problem is.  Could the a/c
be overcharged?  Any assistance would be greatly appreciated!