How do you replace temp sensor on 1995 Buick century 3.1?
that Buick has two sensors for temp. One for the computer and
one for the temp gauge. The computer temp sensor is in front of the
thermostat housing, the temp gauge sensor is behind the thermostat
housing. They are both pretty cheap to buy. The gauge sensor is
sort of a bear to get off, unless you take just a few more things
off that are in you way to ease access. Be sure to bleed the
cooling system of air after replacing it / those sensors. Chances
are if someone as monkeyed around with things, the system may need
to have the air bled anyway.