near the firewall on the passenger side
I found the low pressure ac port on my 2001 sable by the passenger side firewall.
No, the 1994 Mercury Sable does not use R12 for recharging the A/C unit. The 1994 Mercury Sable uses R134a Freon.
check fuse 22
The AC clutch cannot be replaced without physically removing the compressor on a 1997 Mercury Sable. The compressor and magnetic plate must be removed before you can access the clutch.
*Assuming* you are looking for the connection for adding coolant: facing the engine, the refill port is in the back left hand corner, up near the firewall. It has a black screw-on cap on it.
If you're referring to AC power plugins, there's a single 12-volt charging port located directly underneath the cigarette lighter under the radio console.
ac charge valve location on 1999 ford pu
If the AC is on, this is normal.
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the lower port is located under the hood, at the very top of the engine compartment on the passenger side. Its a black hose with a black cap. see attached link for video i found on you tube. http://www.youtube.com/watch?v=cBOTUXCannkn youtube
From the same port you would charge the front ac this is under the hood on passenger side of vehicle. John
At the low side port. If you do not know what this is, take it to a shop.