Disclaimer: This is general guidance. Consult a repair manual specific to your 1999 Chrysler Town & Country Limited's engine (likely a 3.3L or 3.8L V6) for precise instructions and torque specifications. Improper repair can cause damage or injury.
Tools You Will Likely Need:
* Jack and jack stands: Essential for safely lifting the vehicle.
* Wheel chocks: To secure the vehicle.
* Socket wrench set: Various sizes, including metric.
* Ratchet and extensions: For reaching difficult areas.
* Torque wrench: Crucial for tightening bolts to the correct specification.
* Penetrating oil (PB Blaster, etc.): May help loosen stubborn bolts.
* Shop rags or paper towels: To clean up fluids.
* New input speed sensor: Ensure you get the correct part number for your vehicle.
* Repair manual (highly recommended): Specific diagrams and torque specs are vital.
General Steps (Consult your repair manual for precise details):
1. Safety First: Disconnect the negative battery cable. Place the vehicle on jack stands securely. Chock the wheels.
2. Access the Transmission: The location of the input speed sensor varies slightly depending on the transmission type (3-speed automatic or 4-speed automatic). Usually, it's located on the transmission case, near the bellhousing. You may need to remove some components (e.g., parts of the undertray, possibly even the exhaust) to gain access. Your repair manual will show you the exact location and what needs to be removed.
3. Disconnect the Electrical Connector: Carefully unplug the electrical connector from the sensor. Take a picture or make a note of how it's connected to avoid problems when reinstalling.
4. Remove the Sensor: The sensor is typically held in place by a bolt or bolts. Use the appropriate socket and carefully remove it. Penetrating oil may be necessary if the bolt is rusted or stuck.
5. Clean the Area: Clean the mating surface on the transmission where the sensor sits. Remove any debris or old gasket material.
6. Install the New Sensor: Carefully install the new input speed sensor, ensuring it's seated correctly.
7. Tighten the Bolt(s): Tighten the bolt(s) to the manufacturer's specified torque (found in your repair manual). Over-tightening can damage the sensor or the transmission.
8. Reconnect the Electrical Connector: Carefully reconnect the electrical connector.
9. Reassemble: Reinstall any components you removed to access the sensor.
10. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
11. Test Drive: After reconnecting the battery, test drive the vehicle to ensure the sensor is working correctly. Check for any error codes using an OBD-II scanner.
Important Considerations:
* Transmission Fluid: You might lose some transmission fluid during this process. Have some on hand to top off the transmission if needed. Consult your owner's manual for the correct type of fluid.
* Professional Help: If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper repair can lead to significant damage.
* Part Number: Always double-check the part number of the replacement input speed sensor to ensure it's compatible with your vehicle.
Remember: Always consult your repair manual for detailed instructions specific to your vehicle. This information is for general guidance only and should not be considered a substitute for professional advice.
