Here's a general outline, but remember this is *not* a complete guide and should only be used as a very high-level overview:
Preparation is Key:
* Safety First: Disconnect the negative battery terminal. Wear safety glasses and gloves. Work in a well-ventilated area.
* Gather Tools: You'll need a comprehensive set of tools, including sockets, wrenches, ratchets, extensions, a transmission jack, an engine hoist, and possibly a puller for stubborn components.
* Repair Manual: A factory service manual is crucial. It will provide detailed instructions, torque specifications, and diagrams specific to your van.
* Space: You'll need ample space to work, preferably a garage with a level floor.
General Steps (Highly Simplified):
1. Disconnect Everything: Disconnect all hoses, wiring harnesses, fuel lines, and vacuum lines connected to the engine. Label everything meticulously to ensure correct reassembly. Photographing connections is helpful.
2. Drain Fluids: Drain the engine oil, coolant, and transmission fluid (if applicable).
3. Remove Accessories: Remove the alternator, power steering pump, air conditioning compressor, and other accessories attached to the engine.
4. Detach Transmission: This is often the most challenging part. The method varies greatly depending on the transmission type (automatic or manual). You'll likely need to support the transmission with a jack. The transmission must be separated from the engine.
5. Support the Engine: Securely attach an engine hoist to the engine's lifting points. These are usually threaded holes on the engine block.
6. Disconnect Mounts: Carefully remove the engine mounts that hold the engine to the frame.
7. Lift the Engine: Slowly and carefully lift the engine using the engine hoist. Be mindful of clearances as you remove the engine from the engine bay. You might need to maneuver it carefully to clear components like the steering column.
8. Remove the Engine: Carefully lower the engine to a safe location.
Important Considerations:
* Transmission Removal: Removing the transmission is often necessary, and this step requires specific knowledge and tools. Improper removal can cause damage.
* Engine Hoist Capacity: Ensure your engine hoist has sufficient capacity for the weight of your engine.
* Exhaust System: You may need to disconnect parts of the exhaust system to allow sufficient clearance for engine removal.
* Professional Help: If you're not comfortable with this task, consider seeking professional help from a qualified mechanic. This is a complex job that can easily result in damage if not done correctly.
This is a highly simplified overview. Again, do not attempt this without a repair manual specific to your vehicle. Improperly removing the engine can cause significant damage and potential injury. Consult a professional if you are unsure about any step.