I need the location of the low pressure ac port 2001 lincoln ls v8

Todd, Low side A/C port, Check the attached links,instruction and guides, Good luck
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2000 Lincoln LS AC Low pressure port Location
2005 Lincoln ls low pressure port
low side port 2003 lincoln ls v6 Google Search

Most likely a leak & low on refrigerant

Need a shop to leak check,evacuate,make repair,
and recharge

on back of air comp.

There should be two lines/hoses that come from the compressor. If you can locate these lines, the low pressure side is the larger diameter line or hose. The high pressure side is the smaller diameter line/hose. The re-charge goes into the larger, low pressure side.

you can access it inside the drives front fender at the bottom of the vehicle. there is an access panel that covers it up.

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

the charging port is down low near the ac compressor on the engine

at the compressor beneath the car no access at the top

hi there,
commonly recharging port at low pressure is located at suction line of your ac system,on sample figure you can figure out recharging port.