The high and low Freon valves are located on the air conditioning compressor. Use the low Freon valve to recharge the air conditioning system.
R134a WHERE ARE THE HIGH AND LOWE FREON VALVES LOCATED
You need to replace your Blower relay,
freon in a soda machine is the same as a refrigerator most of the time these machines and refrigerator's do not have service valves for the Freon in order to check the Freon you would have to attach a service valve to the high and low side known as the suction and liquid line
Using a gauge and the proper type of freon, connect to the low side ac port. Start the engine and turn the ac on high. Allow freon to flow to show a full reading on the gauge.
Either you're very lucky and should enjoy it or you have a bad sensor or gage.
The high/low pressure lines have valves (1 each) like a tire. You plug a can into each side to recharge. the can will have the fitting and a guage.
The system has 2 valves, like car tires. The recharge can(s) have a fitting for these and probably a gauge. One will be on high side and one on low.
I do not know of any freon diagrams. I would not recommend trying to charge your air conditioning sytem; it is very complex and the system is under high pressure. Take your car to a professional.
under the steering colum high up there. It requires your body to tork in a weird way to find it but it is about middle left of colum
If it's an auto, there are 2 ports on the lines. One high, one low. Just get a can of r12 & plug into the little valves. Some come with a guage.
If the AC has not been retrofitted, it will have R12 refrigerant in it, which is illegal to release into the air. Most auto shops used to have a R12 recycling/recovery system, but most will not, because R12 is obsolete and VERY expensive. The shops will remove the freon from the low & high side schrader valves (like tire inflation valves). Once the freon is evacuated, they pull the system down with a vacuum. This makes it easy to introduce the new freon, which is R-134a (self charging lines are widely available for $10 & about $9 a can for freon. each car will have the recommended amount of freon, usually on a sticker on the accumilator.
Connect a gauge and freon can to the low side port of the ac system. Start the car and turn ac on high. Fill freon till the gauge shows full.