Safety First:
* Disconnect the negative battery terminal before starting any work to prevent electrical shocks.
* Wear safety glasses to protect your eyes from debris.
* Use jack stands if you need to work under the vehicle. Never work under a vehicle supported only by a jack.
Tools You'll Likely Need:
* Socket wrench set (metric)
* Ratchet
* Screwdrivers (Phillips and flathead)
* Pliers
* Wire cutters/strippers (possibly)
* New wiper motor
* Penetrating oil (like PB Blaster)
Steps (General Outline - Consult Your Repair Manual for Specifics):
1. Access the Wiper Motor: This usually involves removing parts of the cowl (the plastic cover over the engine compartment, near the windshield). This may require removing the wiper arms (remember their position before removal!), some screws, and possibly clips. Your repair manual will show the exact location and how to access the motor.
2. Disconnect Electrical Connections: Carefully disconnect the electrical connector(s) going to the wiper motor. Take photos or make notes of how the wires are connected to avoid confusion during reassembly.
3. Remove the Wiper Motor Linkage: There's a linkage connecting the motor to the wiper arms. This often involves disconnecting rods and clips. Again, carefully observe how it's connected before disconnecting it. Penetrating oil may be helpful to loosen any rusted or seized parts.
4. Remove the Wiper Motor Mounting Bolts: The motor is usually held in place by several bolts. Remove these bolts carefully.
5. Remove the Wiper Motor: Once the bolts are removed, carefully remove the wiper motor from its housing.
6. Install the New Wiper Motor: Follow the steps in reverse order to install the new motor. Make sure the linkage is properly connected and that the motor is securely mounted.
7. Reconnect Electrical Connections: Reconnect the electrical connector(s) to the new motor, ensuring they are securely attached.
8. Reassemble Cowl and Wiper Arms: Carefully put everything back together, making sure all screws and clips are properly secured.
9. Reconnect Battery Terminal: Reconnect the negative battery terminal.
10. Test the Wiper Motor: Turn on your wipers to ensure the new motor is working correctly.
Important Considerations:
* Rust and Corrosion: Older Aerostars are prone to rust. Penetrating oil will be your friend in loosening any rusted bolts or linkages.
* Year Specifics: The exact location and access points for the wiper motor can vary slightly between model years of the Ford Aerostar. Refer to your repair manual!
* Wiring: If you're not comfortable working with car electrical systems, it's best to seek professional help. Incorrect wiring can cause damage.
This is a general guide only. Always consult a repair manual specific to your year and model Ford Aerostar before attempting this repair. If you're unsure about any step, it's always better to seek help from a qualified mechanic.
