Where is the low side valve for the air condition on a Lincoln LS 2002

Not sure of the engine ,so the low side port is in the bigger of the 2 lines.
If you get freon from a parts store with the hose that comes with the can,it will only fit the low side ,Just start the car turn the ac on high,then open the valve on the can,(with the can upright) It will **** the freon out ,you will know when it's empty from the weight. Close the valve ,disconnect the hose,and be cool.

I have a 2002 Lincoln LS and the air conditioning works up until it gets 95 degrees outside then it stops working and just blows hot air. Any suggestions on why this happens?

It is likely that the Coolant Control Valve on your car has failed. This valve is located on the passenger side of the radiator fan shroud near the bottom and has 3 coolant hoses connected to it. This valve regulates interior duct temp by changing the amount of water flow to the heater system.

Under the hood is the Heater Control valve need replacing.

one should be red,high side,and one is blue,low side,look closely,under your air filter box,and alawys trace from the condenser.

There is a very good chance the Dual Coolant Control Valve has failed. This is located at the botton right side of the engine fan shroud and has 3 heater hoses connected to it. This valve controls heater or AC temperature inside the car.

If your LS is blowing hot air on one side of the dash and cold on the other the problem most likely is the Dual Coolant Control Valve. The DCCV is used to control cabin temperature. This valve is mounted down low on the passenger side of the radiator fan shroud, and has 3 coolant hoses connected to it. This valve if found to be faulty will need to be replaced to correct the condition.

In order to charge, you must locate the low pressure valve to install the refrigerant. The low pressure valve is between the compressor and the evaporator. Do not charge on the High Pressure side, The high pressure valve is between the compressor and the condenser. To locate the low pressure valve, follow the line that comes from the compressor and routes toward the firewall. The valve will be somewhere on that line. Do not overcharge. The amount of pressure that is needed on the low pressure side will depend on the ambient outside temperature.

2002 is what I have. should be similar

Service Gauge Port Valves
The high-pressure service gauge port valve is located on the A/C receiver drier manifold and tube assembly.
The low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor.

Item Part Number Description 1 19860 A/C evaporator core 2 19849 Thermostatic expansion valve 3 19A834 Manifold and tube assembly—thermostatic expansion valve 4 19D850 Manifold and tube assembly—A/C compressor 5 19E762 A/C charge port valve (low side) 6 19E762 A/C pressure relief valve 7 19703 A/C compressor 8 19D594 A/C pressure transducer 9 19712 A/C condenser core 10 19D701 A/C charge port valve (high side) 11 19N585 Manifold and tube assembly—receiver drier 12 19959 Receiver drier 13 19C734 Sensor—evaporator air discharge temperature

look back towards the firewall in the low side AC line, that is the larger of the 2 lines, the charging port is in that low side line.