Either the compressor is not on, or is not working. The pressures are supposed to equalize when it kicks off- either when you turn it off or when it cycles and cuts itself off for a minute. If the compressor is on and engaged and you are still reading equal pressures, it has gone out.
high pressure vapor
discharge pressure is high, suction pressure is high superheat is low and subcooling is high.
You can find the air conditioning ports on top of the air conditioning compressor. There will be a low pressure port and a high pressure port.
It is difficult to determine the different pressure ports on your air conditioning compressor without knowing the make and model of the automobile. In most cases the low pressure port is on the right hand side of the air conditioner compressor.
The low pressure connection for your 1993 Jeep Cherokee air conditioning system is located on the top of the air conditioning compressor. There is a low pressure connection and a high pressure connection, both should be labeled.
It may lead to caustic embrittlement.
It is called high pressure for a good reason. The high pressure side can and will pump the refrigerant back into the can of refrigerant and explode in your hands. One more reason to let the professionals work on the air conditioning in your vehicle.
heres maintain the pressure inside the sealed aircoditioning,low,high,protect the compressor,
evaporator
the low pressure side is usually the line that is the thickest. the thinner line is the high side.
check condenser
The 1988 Chevy Corsica air conditioning service valves can be found on top of the air conditioning compressor. The air conditioning service valves are labeled as the low pressure valve and the high pressure valve.