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
To charge the AC in a 1997 Mercury Villager, first, locate the low-pressure service port, typically found on the larger diameter AC line. Connect a refrigerant recharge kit to the port, ensuring the engine is running and the AC is set to the maximum cool setting. Add the appropriate refrigerant until the pressure gauge indicates the correct level, then disconnect the kit and replace the service port cap. Always check for leaks and ensure the system is functioning properly after charging.
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.
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.