I think you should check the air manifold on the control panel and try to find any broken or loose hose.
In addition, check the heat/cold dial knob, under the dash, there is a panel selector for hot air or cold air.
Also check for any broken vacuum hose under the hood.
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The guage needs to read between 35/40 psi.. If its much higher you may be overfull, this causes it to not cool.. Fix by letting some freon out, then top it back to needed pressure.. If pressure is correct, it would be a clog in the system.. Usually an orafice tube or accumulator..good luck!
Most likely your system just needs to be charged with r134a coolant. You can do it yourself. Just head down to the local auto parts store and buy a can of coolant that comes with a hose and gauge attached and then locate you low pressure port on you system. It is typically located on the passenger side between the radiator and the firewall on a silver tube. Don't worry you can't make a mistake as the coupler will only fit the low pressure side. When you locate it remove the cap and hook up gauge and can. Start the car and turn the AC to mac cold and highest fan speed. Then open the gauge depending on ambient temperature out side your gauge should read between 35-45 psi. The gauge should also be color coordinated as long as you don't fill until the gauge is in the red. Your good. Then close the gauge, remove it from the low pressure port and replace the cap on the port. (When the coolant is flowing into your system the can should turn quite cold and maybe even have some frost on it. No worries that is normal).
no year or brand car stated, you make it 100 times harder.. at all times? there are 2 easy and cheap tests. 1: is the compressor clutch engaged? the pulley spins all the time but is the main shaft spinning, (center) 2: is the pressure at the test port about 40 psi, buy a refill kit with gage for near nothing and look if 0 PSI or very low the AC logic brain shuts the compressor down so it DONT EXPLODE. we can find it but you must to the tests. 1 by one.
You need to hook up a set of AC pressure gauges to the low side charging port and read the system pressures with the AC compressor turned on and running, it should be around 28-32 PSI. If the compressor press is correct you have some other problem like a broken air temperature control blend door inside the dash air ducting.
Your going to have to check that the compressor is turning the clutch (center of the pulley) get a set of A/C gauges and check for any freon in the system (static test) high pressure side should read above 200 psi, remove the low pressure cut out switch electrical connector and place a jumper wire between the two wires, this should activate the compressor, the gauges will now tell you how much freon is in the system, the high side needs to read 150 PSI to activate the cooling fans, place a temp gauge in the cener inside vent, place the fan on low, temp coming out of the vent should read around 45-50 at idle, now if you have to add freon that means you have a leak, put dye in the system, and check for leaks.
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