08 PT Cruiser blows warm air but never gets cold. Tried Freon but it doesn't blow cold or last long at all. It sounds like it's clicking on and off not too rapidly when driving it blow slightly cooler but never cold on max and while parked it blows hot air. It's summer in Texas and I'm sweating my makeup off.. any help would be appreciated.
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Sounds like the compressor is activating so you can rule out the Compressor Clutch and all associated electrical.
Place the A/C on
Note: These fans come on in other situations but with the A/C in these settings the fan should be on constantly
If the fan is working then there are a few other possibilities. - The freeon level is either too low / too high. Too much freon is just as bad as too little. It is bad practice to just fill it up with the Autozone trash. The system should be properly evacuated, vacuumed, and recharged to ensure that all moisture is removed from the system and there are no leaks in the system.
_These two switches turn the Compressor Clutch off (the cycling clicking you've most likely heard) in an attempt to protect the Compressor and System from further breakage.
A quick test for the switches can be done if you are certain the the system pressures are good. First, Locate the Low Side (should be on back against the firewall on the passanger side). Turn the A/C on and then unplug the sensor and with a piece of wire that is stripped on either end short the two terminals on the harness side. This will activate the compressor. If the pressures are good and all electrical checks out the nthe switch is bad. You can do the same thing to the High Pressure Switch. If both switches are bad then the A/C will only work if both switches are shorted
I think you need more refrigerant ("freon"). Most modern AC systems have pressure sensors on both the high and low pressure sides of the system. If the high pressure side goes to high, or the low pressure side too low, the compressor clutch (and possibly fan) will switch off. When the system is really low, running the compressor just a second or two will get the low-pressure side too low, and it will immediately cut off, then cycle again. This can be very confusing if you have your pressure gauge attached, since when it cuts off, the pressure on the low-pressure side will shoot up above the target value, leading you to think it's fully charged. It's not. It's near-empty.
You can just unload a whole can into the system to get it partly working, then go by your gauge. What I did on a system I serviced just a couple days ago was pull off the electrical connector for the pressure sensor on the low-pressure side, and stick a paper clip across the terminals to keep the compressor from shutting off. Then I was able to monitor the pressure reliably as I added refrigerant.