The accumulator is a component on the low pressure (vacuum) side of an air conditioning system which uses a fixed orifice tube - they won't be found on a Thermal Expansion Valve system.
System does not contain Freon. R134a refrigerant is added through the low side service port on the accumulator.
In an air conditioning system which uses a Fixed Orifice Tube, the accumulator is located on the low pressure (vacuum) side, between the evaporator outlet and the compressor inlet. The accumulator ensures that all the refrigerant which goes into the compressor inlet is in a vapor state, and prevents any refrigerant which is still in a liquid state from getting through.
You did not give the year so I will assume a newer one. The low side fitting is normally on the accumulator. If your system has R134A refrigerant do not use any that has stop leak in it. That will ruin a shops equipment.
Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side
Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side
Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side
Commonly referred to as the heart of the system, the compressor is a belt driven pump that is fastened to the engine. It is responsible for compressing and transferring refrigerant gas. The a/c system is split into two sides, a high pressure side and a low pressure side; defined as discharge and suction. Since the compressor is basically a pump, it must have a intake side and a discharge side. The intake, or suction side, draws in refrigerant gas from the outlet of the evaporator. In some cases it does this via the accumulator.
The Low side port is located on the accumulator, there is a plastic cap on it. The accumulator is the metal "can" near the firewall on the passenger side.
Low
Yes refrigerant temperatures and pressures in the cooling mode of a heat pump is the same. They are both in the suction side and the discharge side of the system.
On my 88 Tempo, it's in the rear passenger side corner on the return line of the accumulator. (next to the low pressure switch)
One possibility is excessive refrigerant in the system.