Originally Posted by 92K1500
The air will pass through the evaporator too fast and wont cool down as much before getting into the cabin of the vehicle.
thats a pretty clear explanation there, ^
not to get too techy on you guys..............
the extra volume of hot air is actually boiling the liquid refrigerant in the core alot quicker into gas,
when ever your self charging your personal A?C, you can usually put yor hand on the suction line at the exit of the evap, and you can tell when your core has enough liquid by a faint trace of cold in the line .
this is just one of many tricks of the trade
bottom line is find a donor vehicle (with rear A/C)