1. Transmission-mounted Speed Sensor: This is the more common location. The sensor is usually located on the transmission case, near the output shaft. You'll likely find it on the driver's side (left) of the vehicle, somewhere towards the rear of the transmission. It's usually a small, cylindrical sensor with a single wire connector.
2. Differential-mounted Speed Sensor (less common, usually AWD): On some all-wheel-drive models, the speed sensor might be located on the differential housing. This is less common for a 1999 Town & Country but is possible.
Before you begin:
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1999 Chrysler Town & Country is highly recommended. These manuals provide detailed diagrams, instructions, and torque specifications crucial for a successful repair. This is important because the exact location and procedure can vary.
* Safety First: Disconnect the negative battery terminal before starting any work. This prevents accidental short circuits or damage to the vehicle's electrical system.
* Gather Tools: You'll likely need a socket wrench (possibly a deep socket), a ratchet, and possibly a pry tool to carefully disconnect the sensor connector. Have rags handy to catch any drips of transmission fluid if present.
General Steps (for a transmission-mounted sensor):
1. Locate the sensor: Use your repair manual to pinpoint the exact location on your vehicle.
2. Disconnect the electrical connector: Carefully unplug the sensor's electrical connector.
3. Remove the sensor: Use the appropriate socket to remove the sensor from the transmission. It might be threaded in, or it might be held in by a retaining clip. Again, your repair manual will specify the correct procedure.
4. Clean the area: Clean the mating surface on the transmission where the sensor sits to remove any debris or old sealant.
5. Install the new sensor: Carefully install the new speed sensor, ensuring it's seated correctly. Tighten it to the manufacturer's specified torque (found in your repair manual).
6. Reconnect the electrical connector: Securely reconnect the electrical connector.
7. Reconnect the battery: Reconnect the negative battery terminal.
8. Test the repair: Test drive the vehicle to ensure the speed sensor is functioning correctly. Check your speedometer to confirm accurate speed readings.
If you encounter difficulties:
* Don't force anything: If you're having trouble removing or installing the sensor, consult your repair manual or seek professional assistance. Forcing it could cause damage.
* Professional help: If you're not comfortable working on your vehicle yourself, it's always best to take it to a qualified mechanic. Transmission repairs can be complex.
Remember: This is a general guide. Always refer to your specific vehicle's repair manual for precise instructions and safety precautions. The exact location and removal process might vary slightly depending on your particular model. Improper repair could lead to damage to your vehicle, therefore seeking professional assistance is always an option if unsure.
