Tuesday, April 1, 2014
How to Replace Oxygen Sensors in a 1996 Ford Explorer
The oxygen sensors in a 1996 Ford Explorer gauge the amount of unburned oxygen present in the exhaust system. A signal is sent to the engine management computer. The unburned oxygen relates to the fuel mixture, and the computer makes continuous adjustments as a result of these signals. There are always at least two sensors on each exhaust system. If the vehicle has dual exhaust, it will have four sensors.
Instructions
- 1
Connect the code scanner cable end to the OBD port under the dash on the left side of the steering column. The scanner is needed to determine which sensor is defective. Turn the ignition key to the "Run" or "On" position.
2Press the key marked "Read." The computer will display a five-digit code. Record this code. Cross-erence this code with the code sheet that accompanies the code scanner to identify the faulty sensor. Turn the key off.
3Raise the vehicle with the floor jack and place jack stands under the frame. Lower the vehicle onto the jack stands. Disconnect the electrical connector from the faulty sensor. If the code indicated that the number 1 sensor is faulty, it will be the one between the engine and the converter. If the number 2 sensor is faulty, it will be the sensor on or behind the converter.
4Remove the faulty sensor using the 7/8-inch wrench. Turn the sensor counterclockwise to remove it.
5Install the new sensor and tighten with the wrench. Connect the electrical connector. Lower the vehicle with the floor jack.
