Removal & Installation
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1994 Mercury Tracer, 1994 Mercury Topaz, 1994 Mercury Sable, 1994 Mercury Grand Marquis, and 1994 Mercury Cougar. However, it is still accessible from the selected car via links, so may be relevant.
The oxygen sensor is equipped with a permanent pigtail, which must be protected when sensor is removed. Ensure sensor is free of contaminants, and avoid using cleaning solvents of any type. Sensor may be difficult to remove when engine temperature is less than 120°F (48°C). Always use anti-seize compound on threads prior to installation. Tighten sensor to 30 ft. lbs. (41 N.m).