yes it makes u go numb but it feels good
You will definitely lose all of your Freon when you replace the high pressure switch. Once the high pressure switch is loosen the Freon will begin to access the system.
R134a WHERE ARE THE HIGH AND LOWE FREON VALVES LOCATED
The high and low Freon valves are located on the air conditioning compressor. Use the low Freon valve to recharge the air conditioning system.
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.....
Connect a freon gauge and the freon can to the low side ac port. With the ac running on high and the engine running, open the freon. Let it flow until the gauge shows that the system is full.
add
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.....
Connect a freon gauge and freon can to the low side ac port. Start the engine and turn the ac on high. Open the valve to allow the freon to flow until the gauge reads full.
connect a Freon gauge and Freon tank to the low side ac port. After starting the engine and putting ac on high, open the Freon valve. Watch the gauge until the Freon is full.
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.
Air duster, gasoline, freon, paint
discharge pressure is high, suction pressure is high superheat is low and subcooling is high.