Tools You'll Likely Need:
* Socket wrench: The size will depend on the sensor's retaining bolt. Probably a 7/16" or 1/2" inch.
* Ratchet: To make using the socket easier.
* Extension(s): May be necessary to reach the sensor bolt.
* Wrench (possibly): Some sensors use a nut and bolt; others might only have a bolt.
* Penetrating oil (like PB Blaster): Highly recommended to loosen any corroded bolts.
* Gloves: To protect your hands.
* Shop towels or rags: To clean up any dirt or oil.
* Torque wrench (optional but recommended): For proper re-installation of the sensor.
Procedure:
1. Safety First: Always disconnect the negative (-) terminal of your battery before starting any work on the electrical system. This prevents accidental shorts and damage to your vehicle's electronics.
2. Locate the Sensor: The ABS sensor is typically located near the wheel hub, often within easy reach after removing the wheel. It's a small, cylindrical component with a wire harness attached. It might be mounted on the knuckle, or inside the hub assembly (depending on year & model specifics). Check your repair manual for its precise location.
3. Remove the Wheel: Loosen the lug nuts before jacking up the truck and securing it safely with jack stands. Remove the wheel.
4. Access the Sensor: Once the wheel is off, you should be able to see the sensor. Sometimes you'll need to remove brake caliper (carefully, and possibly support it) or other brake components to access it properly.
5. Disconnect the Electrical Connector: Carefully unplug the electrical connector from the sensor. Sometimes a small tab needs to be pressed to release it.
6. Remove the Sensor's Retaining Hardware: Use the appropriate socket and ratchet to carefully remove the bolt(s) or nut(s) holding the sensor in place. Apply penetrating oil if necessary, and let it sit for a few minutes to work. Use gentle but firm pressure to avoid stripping the threads.
7. Remove the Sensor: Once the retaining hardware is removed, gently pull the sensor out from its mounting location.
Re-installation:
Follow the steps above in reverse order. Remember to:
* Clean the sensor: Before reinstalling, clean the sensor and its mounting area of any dirt or debris.
* Apply a small amount of anti-seize compound (optional but recommended) to the sensor threads: This prevents corrosion during future removal.
* Torque the sensor's retaining hardware to the manufacturer's specification: Refer to your repair manual for the correct torque value. This is crucial to prevent damage to the sensor.
* Reconnect the electrical connector: Ensure it's securely plugged in.
* Reinstall the wheel: Tighten the lug nuts in a star pattern to ensure even pressure.
Important Notes:
* Repair Manual: A Haynes or Chilton repair manual for your specific vehicle will give you detailed, illustrated instructions and crucial torque specifications. This is the best way to avoid damaging anything.
* ABS Warning Light: After reinstalling the sensor, you may need to clear any ABS warning lights that might have come on during the process. Some OBD-II scanners can do this, or a professional mechanic can clear the code.
* Damaged Sensor: If the sensor is damaged during removal, you'll need to replace it with a new one. Make sure to get a new sensor that is specifically designed for your vehicle.
By carefully following these steps and consulting a repair manual, you should be able to successfully remove and reinstall the ABS front wheel sensor on your 1996 Ford Ranger. Remember, if you are not comfortable performing this repair yourself, it is best to take your truck to a qualified mechanic.
