Knock Sensor (KS)
WARNING: This page is about a different car, the 1996 Mercury Villager and 1995 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
KS is located on cylinder block. Before continuing diagnosis, check fitness of engine, quality of fuel and basic spark timing. Faults in sensor or circuit should set a service code. See QUICK TEST in TESTS W/CODES article. If no service code has been set, see CIRCUIT TEST KS in TESTS W/CODES article for additional sensor specifications and circuit testing procedures. Sensor is tested by substitution or by manually generating a knock to ensure sensor will set a service code.