How to Replace the Wheel Speed Sensor in a Ford Taurus

Emergency driving situations usually lead to someone slamming on the brakes to stop abruptly. The anti-lock brake system (ABS) helps to prevent wheel lockage in such situations so that your 1996 to 2005 Ford Taurus doesn't skid. In order for the ABS to function properly, the wheel speed sensors, which send signals regarding the speed of each wheel to the ABS, must be operating correctly. These steps detail how to replace the front speed sensors.

Difficulty: Moderately Challenging

Instructions

Things You'll Need:

• Battery terminal puller
• Car jack
• Wrench
• Torque wrench

1. Park your Ford Taurus on a level surface, activate the emergency brake and place blocks behind the back tires for safety. Disconnect the negative battery cable with a terminal puller.

2. Locate the speed sensor wire in the engine compartment and disconnect it.

3. Raise the vehicle on the side of the wheel speed sensor's location. Remove the wheel and tire assemblies.

4. Detach the speed sensor wire grommets from the rail bracket and from the retainer on the strut housing above the steering knuckle.

5. Unscrew the speed sensor retaining bolt and remove the sensor from the steering knuckle.

6. Install the new speed sensor by reversing the removal process. Torque the retaining bolt to between 90 and 120 inch pounds (10.2 to 13.8 Nm).

7. Lower the vehicle safely and reconnect the negative battery cable. Refer to your owner's manual to perform an ABS system check to confirm that you installed the sensor properly.

Tips & Warnings

• For front wheel speed sensors, check the o-ring and spacer for damage and replace if necessary.
• Apply an anti-corrosive sealant to the wheel speed sensor prior to installation to prevent galvanic corrosion.
• Removal and installation of rear wheel speed sensors on your Ford Taurus is a different process. Consult your owner's manual or a mechanic for more information.
• Never remove the speed sensor with pliers. If corrosion causes the sensor to seize to the steering knuckle, use a small mallet and punch to remove it by lightly tapping the edge of the sensor ear and rocking the sensor from side to side until it comes loose. Additionally, don't hammer or bang the new wheel speed sensor into the sensor housing. You must push it in by hand.
• Failure to install a wheel speed sensor properly, such as contact with moving parts or stretched sensor cables, can result in ABS failure and threaten your safety. If in doubt, consult a mechanic for correct installation.
• The disconnection of the negative battery cable may interfere with the on board computer function. Upon reconnection, the computer may need to go through a relearning process.

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