*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.
Your local auto parts store can help you with that.
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
near the firewall on the passenger side
I found the low pressure ac port on my 2001 sable by the passenger side firewall.
wheres the bottom ac valve on a 1999 ford expidition
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.
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.
If the AC is on, this is normal.
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There are two ports on the air conditioning compressor on the Mercury Mountaineer. The refrigerant to recharge the system is to be connected to the lower port.
R-134a