Which o2 sensor are you looking for?
The rear located near gas tank?Vehicle Speed Sensor
The turbine speed sensor is located on the back of the fan hub facing the engine, and your 1999 Lincoln Continental. The speed sensor can be identified by the four electrical wires leading into it.
Just replaced the sensor in my continental and it is no starts and will run flawlessly but won't be a reliable car
The coolant temperature sensor on a 1997 Lincoln Continental is located on top of the engine, near the upper radiator hose. It constantly relays the engine's temperature to the computer.
located in the cylinder head
Exhaust manifold or on catalytic conerter.
Just locate the connector with the white cable, in the front of the Engine and it lead you to the oxygen sensor. It has to be attached to the Pre- Cat
I had the same problem and found out it was the crank shaft sensor!
right above where the oil filter is located
on the mufflers after the heads
IAT= intake are temperature sensor ECT= engine coolant temp. sensor
Trouble code P1121 means: Throttle Position Sensor A Inconsistent With MAF/MAP Sensor