| as yours is (according to the gauges), two things can cause poor cooling, as you are having. The first is an occluded evaporator. The Z32 air box is filterless and allows all sort of fibers and particles and leaves and insects to deposit on the face of the evaporator. In this condition less heat exchange occurs. Make sure you carefully clean the evap when you have the box out (which you must remove to access the heater/diversion box). The other is a malfunctioning motor (or linkage) in the diversion box. This box has 4 motors, but only one has an internal trim pot to tell the a/c computer (if you have auto a/c) where the motor shaft is. This one controls the blending door and water valve. Any malfunction in this system will reduce cooling.
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