add
discharge pressure is high, suction pressure is high superheat is low and subcooling is high.
No - actually, it'll have a more opposite effect. The superheat will be low, system pressure will be high, and the result will be insufficient cooling.
Charged on the low side service port. If you connect a small can of Freon to the high side with the system on, the can may explode from the high pressure introduced into it.....
You don't add Freon as it has R134a not Freon. You add it to the low pressure side which is the larger hose.
Undercharge can cause HIGH superheat. Overcharge can cause LOW superheat. You need some superheat when charged correctly. How much is needed is depending on outdoor air temperature and indoor wet-bulb temperature.
You add freon to the low side fitting,top front,on the ac compressor
With the Freon and gauge connected to the low side ac port, start the engine. Turn ac on high, and add Freon till the gauge shows full.
The high and low Freon valves are located on the air conditioning compressor. Use the low Freon valve to recharge the air conditioning system.
You can add freon on the low side service port that is located on the accumulator next to the firewall................
You add freon to the a/c by using the low side, suction side (larger hose).............
You add Freon on the low side with the motor running. The low side connection port for freon is much smaller in size compaired to the high side, so you can't put it in on the high side. If you are a novis at this, I suggest you buy the charge kit with a gage so you don't over fill the system,(if you over fill it it won't work properly)
Answer freon install 1991 Chevythe low side is the big tubing high is small you should look for a siver canaster about the size of a thermus it will have a connection for low pressure to insert freon into system