However, if you're determined to do it yourself, here's a general overview. This is not a complete guide, and omitting steps could severely damage your engine. Always consult a repair manual specific to your vehicle's engine (likely a 2.2L or 2.4L) for detailed instructions and torque specifications. These manuals are available online and at auto parts stores.
General Steps (Highly Simplified):
1. Disconnect the Battery: This is crucial to prevent electrical shorts.
2. Prepare the Vehicle: Raise the vehicle securely on jack stands. You'll need ample space to work.
3. Drain Fluids: Drain the engine oil and coolant.
4. Remove Accessories: You'll likely need to remove various components like the serpentine belt, various pulleys, and possibly the power steering pump to access the timing chain cover. This often involves removing various brackets and hoses.
5. Remove the Timing Chain Cover: This exposes the timing chain and tensioner. Expect several bolts and potentially some sealant to contend with.
6. Remove the Old Timing Chain: This involves carefully removing the chain from the sprockets on the crankshaft and camshaft(s). Make sure to mark the chain's position relative to the sprockets to ensure correct reinstallation. Failure to do so could lead to incorrect valve timing and engine damage.
7. Replace the Tensioner: Remove the old tensioner and install the new one, ensuring it's properly seated and functioning correctly.
8. Install the New Timing Chain: Carefully install the new timing chain, ensuring it's properly aligned with the sprockets according to your markings and the repair manual.
9. Reinstall the Timing Chain Cover: Apply a fresh bead of sealant to the timing chain cover gasket before installing it.
10. Reinstall Accessories: Reinstall all the components removed earlier, ensuring everything is securely fastened and aligned.
11. Refill Fluids: Refill the engine oil and coolant to the correct levels.
12. Check for Leaks: Inspect for any leaks before starting the engine.
13. Start the Engine: Start the engine and listen for any unusual noises. Check for leaks again.
Crucial Considerations:
* Timing Chain Alignment: Misaligned timing chains can severely damage your engine. Precise alignment is critical.
* Torque Specifications: Use the correct torque specifications for all bolts and fasteners, as provided in your repair manual. Over-tightening or under-tightening can cause damage.
* Special Tools: You will likely need specialized tools, such as a timing chain tool to hold the sprockets in place during installation.
* Repair Manual: A service manual is absolutely essential. It will provide detailed step-by-step instructions, torque specifications, and diagrams.
In summary: This is a complex repair. Unless you have significant experience with automotive repair and access to the proper tools and a repair manual, it's best to leave this job to a professional mechanic. Improperly performed repairs can lead to serious engine damage.
