However, if you're determined to do it yourself, here's a general outline. This is not an exhaustive guide and may not cover every variation depending on the specific engine in your Cavalier (2.2L or 2.4L). Always consult a repair manual specific to your vehicle's year, make, model, and engine for precise instructions and torque specifications.
Tools You Will Need (at minimum):
* Repair manual: Absolutely crucial for your specific Cavalier model and engine.
* Timing belt kit: This usually includes the belt, tensioner pulley, and idler pulleys. Get all the parts specific to your engine.
* Socket set and wrenches: Metric sizes are needed.
* Jack and jack stands: Safety first!
* Wheel chocks: Essential for safety.
* Torque wrench: Absolutely necessary to properly tighten bolts and prevent damage.
* Ratchet and extensions: To reach tight spots.
* Pliers and screwdrivers: Various types.
* Pry bar (possibly): Might be needed for stubborn components.
* Clean rags: To keep things clean.
* Shop towels: For cleaning up spills.
* Gloves: To protect your hands.
* Safety glasses: To protect your eyes.
General Procedure (Consult your repair manual for precise steps):
1. Safety First: Disconnect the negative battery cable. Support the vehicle securely on jack stands. Engage the parking brake and use wheel chocks.
2. Access the Timing Belt: This usually involves removing various components like the serpentine belt, various plastic covers, and possibly other parts to gain access to the timing belt cover. Your repair manual will detail exactly what needs to be removed.
3. Mark Timing Belt Position: Before removing the old belt, make precise markings on the crankshaft and camshaft sprockets to note their relative positions. This is absolutely critical for proper reassembly. Using a paint marker or aligning tools is recommended.
4. Remove Old Timing Belt: Loosen the tensioner pulley(s) according to the repair manual instructions to release the tension on the timing belt. Then carefully remove the old belt.
5. Inspect Components: Carefully inspect the water pump, tensioner, and idler pulleys for wear and tear. Replace any worn components as part of the timing belt kit.
6. Install New Timing Belt: Align the new timing belt with the marks you made previously. Carefully route the belt around the crankshaft, camshaft, and other pulleys. Ensure it is seated correctly in all grooves.
7. Tighten Tensioner: Tighten the tensioner pulley according to the specified torque in your repair manual. This is crucial.
8. Reassemble: Reinstall all the components you removed earlier, following the reverse order of disassembly.
9. Double-Check Timing: After reassembly, double and triple-check your timing marks to ensure everything is perfectly aligned. A slight misalignment can cause serious engine damage.
10. Reconnect Battery: Reconnect the negative battery cable.
11. Start Engine: Carefully start the engine and listen for any unusual noises. If you hear knocking or other problems, immediately shut off the engine.
Important Considerations:
* Torque Specifications: Using the correct torque wrench and tightening bolts to the manufacturer's specifications is vital to prevent damage.
* Alignment Tools: Some mechanics use specialized alignment tools to ensure perfect timing belt alignment. Consider renting or borrowing these if you're unsure.
* Engine Type: The 2.2L and 2.4L engines in the 2002 Cavalier have different timing belt configurations. You must use the correct repair manual and parts for your specific engine.
Again, this is a simplified overview. Consult a comprehensive repair manual and seriously consider having a qualified mechanic perform this repair. Improper timing belt installation can lead to bent valves, engine damage, and expensive repairs. Safety and accuracy are paramount.
