Here's a highly simplified breakdown of the process:
1. Preparation:
* Safety First: Disconnect the negative battery terminal. Use jack stands securely to support the vehicle after raising it with a jack. Wear safety glasses and gloves.
* Gather Tools and Parts: You'll need a comprehensive set of tools including wrenches (metric), sockets, ratchets, torque wrench, jack stands, engine hoist (absolutely necessary), transmission jack (recommended), fluid collection pans, and new gaskets, seals, and fluids. Obtain a repair manual specific to your Contour's engine.
* Drain Fluids: Drain the engine oil, coolant, and transmission fluid (if applicable).
* Disconnect Components: Disconnect all components connected to the engine: wiring harnesses, hoses, fuel lines, exhaust system, etc. Label everything carefully to avoid confusion during reassembly. Take pictures as you go.
2. Engine Removal:
* Remove Ancillary Components: Remove as many components as possible from the engine to reduce its weight and improve accessibility. This includes things like the alternator, power steering pump, air conditioning compressor, etc.
* Detach Transmission: Depending on the transmission type (automatic or manual), this will involve disconnecting various linkages, the driveshaft, and potentially removing the torque converter.
* Disconnect Mounts: Unbolt the engine mounts that secure the engine to the chassis.
* Lift Engine: Using the engine hoist, carefully lift the engine out of the engine bay. This usually requires a slow and controlled process.
3. Installation of the New Engine:
* Position the New Engine: Carefully lower the new engine into place using the engine hoist.
* Reconnect Components: Reattach all the components you disconnected earlier, ensuring everything is correctly aligned and connected. Refer to your repair manual for the correct order and torque specifications.
* Refill Fluids: Refill the engine oil, coolant, and transmission fluid to the proper levels.
* Reconnect Battery: Reconnect the negative battery terminal.
4. Testing and Final Checks:
* Start the Engine: Start the engine and check for any leaks or unusual noises.
* Inspect for Leaks: Carefully check for any leaks in the engine, transmission, or cooling system.
* Check Fluid Levels: Check all fluid levels and top off as necessary.
* Road Test: Once everything appears to be functioning correctly, take the vehicle for a test drive.
Important Considerations:
* Repair Manual: A factory service manual is absolutely crucial. It provides detailed instructions, torque specifications, and wiring diagrams.
* Experience: This is a complex job best left to experienced mechanics. Incorrect procedures can cause significant damage to your vehicle.
* Professional Help: Consider taking your vehicle to a qualified mechanic to avoid potential problems and ensure the job is done correctly. The cost of professional labor will likely be less than the cost of mistakes made during a DIY attempt.
This is a highly simplified overview. The actual process involves many more steps and requires a deep understanding of automotive mechanics. Do not attempt this unless you have significant experience with engine repair. A mistake could cause serious damage or injury. Consult a professional mechanic if you are unsure about any aspect of this process.
