Here's a general outline. Specific procedures will vary depending on the engine size (e.g., 3.9L, 5.2L, 5.9L) and the type of mount itself (hydraulic, rubber, etc.). Always consult a repair manual specific to your van's year, make, model, and engine for detailed instructions and torque specifications.
Tools you'll likely need:
* Jack and jack stands: Absolutely essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To prevent the van from rolling.
* Engine support bar or hoist: To support the engine's weight while removing and installing the mounts. This is crucial to prevent damage.
* Sockets and wrenches: Various sizes, likely including metric and SAE.
* Torque wrench: To tighten bolts to the manufacturer's specifications. This is crucial to prevent damage.
* Pry bar: May be needed to help separate the mount from the engine or frame.
* Hammer (rubber mallet preferred): May be helpful for stubborn bolts.
* Penetrating oil (PB Blaster, etc.): To loosen rusted or seized bolts.
* New motor mounts: Get the correct ones for your van!
* Safety glasses and gloves: Protect yourself from injury.
* Shop rags: To clean up spills and grease.
General Steps (Consult your repair manual for specifics):
1. Preparation: Disconnect the negative battery terminal. Consult your repair manual for any other necessary disconnections (e.g., some sensors or wiring harnesses might be in the way).
2. Access: Jack up the van and securely support it on jack stands. You might need to remove some components (e.g., underbody panels, air intake components) to get better access to the motor mounts.
3. Support the Engine: Use an engine support bar or hoist to securely support the engine's weight. This is critical to prevent it from falling and causing injury or damage.
4. Remove the Old Mounts: This usually involves removing bolts that attach the mount to both the engine and the frame. Penetrating oil will be your friend here. Often, you'll need to remove some surrounding components to access certain bolts. Take pictures as you go to help with reassembly.
5. Install the New Mounts: Carefully install the new mounts, ensuring they are properly seated. Tighten the bolts to the manufacturer's specified torque using a torque wrench.
6. Lower the Engine: Carefully lower the engine, ensuring it's evenly supported throughout the process.
7. Reconnect: Reconnect any components you removed earlier. Reconnect the negative battery terminal.
8. Lower the Vehicle: Carefully lower the van from the jack stands.
9. Test: Start the engine and check for any unusual noises or vibrations. Test drive the van to ensure the problem is solved.
Important Considerations:
* Engine Alignment: Ensure the engine is properly aligned during reassembly. Misalignment can lead to further problems.
* Torque Specifications: Use a torque wrench and follow the manufacturer's specifications precisely to avoid damaging the engine or frame.
* Repair Manual: A repair manual specific to your van is invaluable. It will provide detailed instructions, diagrams, and torque specifications. Don't skip this.
This is a general overview. The exact procedure will vary depending on your specific van and engine. Always refer to a repair manual before attempting this repair. If you're unsure about any step, it's best to consult a professional mechanic. Improperly installed motor mounts can lead to serious damage.
