[Rawknees'Turbo]

^^^

Usually overcharging results in warmer vent temps, not colder - super cold like than can mean very undercharged (but I have never seen temps that cold from auto a/c, regardless of charge, etc).

Do you own service set gauges, and if not, do you think you could borrow some from your local Autozone and use them (I ask because I obviously don't know what your a/c experience level is)? You really need to get suction (low side) and discharge (high side) pressure readings in order to troubleshoot this . . .

Over or under charged could be causing a high/low pressure switch in the system to trigger and cut power to the compressor clutch (if there is one present) - no way to know without checking pressures.