AIR CONDITIONER QUIT WORKING

close off the cab circulation to the outside air
make sure that the condenser fan is fully operational
fan in front of the radiator
have an accredited ac specialist check the gas pressures are correct --if there is excessive gas the high pressure switch will shut the ac compressor down
shut off the heater system as it it is a climate control system , there may be still hot air mixing with the ac air

Well, I think you can rule out the AC/heater fan inside the car. That would make noise even just sitting in the driveway.

Many/most vehicles are designed to run the AC compressor not only when the AC is on but also when the defroster is on. This is to keep the AC compressor lubricated through the winter months also.

It should not be a belt problem as that belt is always turning anyway which should then rule out the pulley bearing at the AC compressor.

I do suspect your problem is a major internal failure of the AC compressor. This can be easily checked by a technician [or yourself if qualified]. Locate the electrical connector at or to the AC compressor. Two people: With the AC turned on, in park, increase the engine speed so you can here the noise. Disconnect the AC compressor electrical connector. If the noise stops instantly, the compressor has failed. A quite expensive repair. Have a reputable shop locate a re-manufactured compressor for you. That will help some on the cost.
Bestaluckto you!!
M

No that doesn't sound like the problem, the fan clutch locks up to cool the engine off due to the increased load of the AC system on the cooling system, so it locks up and gets much louder. If it didn't lock up the engine would overheat.

check your blower motor under the passenger side of the dash, round plastic box three screws pull it out something might have fallen though your cowl and chewed up the fan blades. as for the ac your r-12 is probly empty or has a leak bring it to a local garage and have them flush and fill your cooling system. heater would be your thermostat not openig properly, by far your cheapest fix under ten dollar part.

After a jumper test on the fans to make sure that they work, you might take a look at your coolant level or temperature sensor. The try testing or replacing any fuses or relays wired into your air conditioning and heating circuit. In my 1998 Buick Regal, the fans never run until the air conditioner or heating fan is turned on. Unfortunately, the A.C. compressor and the cooling fans also kick in when I turn on the heater fan switch. Your best option is to wire the fans to a manual switch on your dash or just drive really fast all the time.

the cooling fan that comes on when the AC is turned on isnt working

1. Could be a caught foreign object between A/C (air conditioning) fan and cooling radiator, producing this loud noise.
2. Could be a damaged fan blade, mowing the cooling radiator.
3. Could be a loud noise comming from the fan's electrical motor.
4. Could be a broken off fin (small wing) of the cooling radiator, striking the A/C fan, producing this loud noise.

You may want to have the evaporator (the AC part under the dashboard on the passenger side) cleaned. It needs to be taken out and cleaned. Normally this would solve the issue. Have the freon checked if there is a decrease. You may have it filled up and have the system checked for leaks.

open glove box and make sure that none of the papers from that can get down to blower motor

When the AC is turned on does the cooling fan run?