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No, the 1994 Mercury Sable does not use R12 for recharging the A/C unit. The 1994 Mercury Sable uses R134a Freon.
You should be able to find a sticker on the underside of the hood that will tell you. It should be R134a.
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.
The Freon capacity for a 1997 Pontiac Trans Sport with dual AC is 46 ounces of R134a refrigerant. The capacity for the same vehicle with single AC is 32 ounces.
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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if you mean re-routing the belt in some way to avoid the a/c compressor...then no..you cannot...
AC On Without Key?that means you had possibly or the owner before put a remote start on it and they wired ac into that if that's not the case then someone rewired your ac and put it on an all power source ?
Your local auto parts store can help you with that.