Can anyone change the oxygen sensors on a 2000 Mercury Sable?
Yes. You just need an oxygen sensor socket. It's open on one
side to allow the pigtail through. Some replacment oxygen sensors
are equipped with a plug others need to be spliced in. If you use
the type that needs to be spliced, just make sure the wires are the
same color. Just disconnect the old one then screw it out and screw
in the new one, then connect it. Sometimes they're a little
difficult to remove when they've been there a while, and make sure
you remove the plastic protector (if it has one) before you put the
new one in.