Air conditioner not working correctly?

Did you use a fuse or hard wire the A/C clutch to make it energize? Use a test lead with the same ize fuse in the line. If it bolws then the problem is the clutch. A straight wire is about 40 amps+ You can buy a fuse in a line for about 2 bucks

You mean refrigerant level? It assume the static temperature of the engine compartment in punds. If you engine area is 125 degrees then the refrigerant will be 125 pounds and it is normal. Let me know

Antifreeze has nothing to do with the air conditioning system. The first thing your mechanic will do is attach a pair of gauges to the system to see if it is fully charged with refrigerant. If it is just low on charge, recharging it with the correct amount may be all that's needed. If it's empty there is most likely a leak that needs to be identified.

If the air flow doesn't switch to different outlets, you may have a vacuum operated system and there's a break in the vacuum hose under the hood, or it could be disconnected. Look on the vacuum hose routing diagram under the hood to find that small hard plastic hose and the check valve. Check it for leaks first, then pull the hose off the valve and check for vacuum there with the engine running.

Have you checked to see if it needs recharged?