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on a contour its the one on the drivers side...in fact your snap on fill hose will only fit the right one which is the one on the drivers side...let your car run as the Freon goes n and make sure your ac is turned on max cooling
I suspect it is partially obscured from visibility by a bracket on the passenger side of the firewall. The low pressure port is actually on the receiver/dryer below this bracket. See the link for a video on how to get to it. (It's for a Ford Expedition, but is probably the same on your Mark).
Hi,
Either on the "dryer" which is the bottle shaped item usually next to the radiator or firewall or on the largest diameter a/c hose, not the smaller diameter. You will feel this hose get cold if you are on the right one. I'm guessing you have a standard recharge kit from Wal-Mart, AutoZone, etc. which consists of a pressure gauge, screw on tap, valve, hose with attached fitting if yours differs let me know before proceeding otherwise, first attach hose to the low pressure charging port on the refrigerant line. This will be on the larger tube usually near or on the accumulator. The silver aluminum cylinder with several wire connections and 2 black plastic covers which will be your quick connect connections the smaller diameter one will be your low pressure side. Be sure to wear gloves and eye protection!!!
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u need a 134a charge hose ,on ur car look for the ac compressor and find the large ac line/hose and follow it around to the small ac service port,this is the low side port connect to it and tap the can at the othe end and start car turn the ac on high an d high blower motor,and recurculation if it has it and max air start charging
The low pressure service gauge port valve is located on the evaporator to accumulator/drier suction line.
The evaporator to accumulator/drier suction line contains low pressure refrigerant gas and is equipped with a serviceable low pressure A/C charge valve port.
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