This outlines the general steps; significant variations exist depending on the exact engine configuration. Always prioritize safety – disconnect the negative battery terminal before starting.
Tools You'll Likely Need:
* Wrench set (metric): Various sizes, including sockets, ratchets, and extensions.
* Screwdrivers (Phillips and flathead): Various sizes.
* Pliers: Needle-nose and regular.
* Socket wrench: For removing and installing bolts.
* Drain pan: To catch coolant.
* New water pump: Make sure it's the correct one for your specific Cavalier model and engine.
* New gasket and/or seals: These are crucial to prevent leaks.
* Coolant: The correct type for your vehicle.
* Jack and jack stands: Essential for safe working conditions.
* Torque wrench: For tightening bolts to the proper specification.
* Flashlight: For better visibility in tight spaces.
* Gloves: To protect your hands.
* Shop rags: To clean up spills and keep things tidy.
General Steps (Consult your repair manual for specific details):
1. Drain the Coolant: Locate the coolant drain petcock (usually on the radiator or engine block) and carefully drain the coolant into your drain pan.
2. Remove the Accessory Belts: Loosen the tensioner pulley (consult your manual for the specific method) to remove the serpentine belt that drives the water pump and other accessories.
3. Disconnect Components: Disconnect any hoses attached to the water pump. Be prepared for coolant leakage. Mark the hoses to ensure proper reinstallation.
4. Remove the Water Pump Pulley (if applicable): This might require a pulley puller.
5. Remove the Water Pump Bolts: Carefully remove the bolts holding the water pump to the engine block. They may be difficult to access.
6. Remove the Water Pump: Gently pry the old water pump off the engine block. Take note of the orientation of the pump for proper reinstallation.
7. Clean the Mounting Surface: Thoroughly clean the engine block mating surface to ensure a good seal with the new water pump.
8. Install the New Water Pump: Carefully install the new water pump, ensuring the gasket is properly seated. Tighten the bolts to the manufacturer's specified torque (consult your repair manual).
9. Reinstall Components: Reinstall the pulley (if removed), connect hoses, and replace the serpentine belt.
10. Refill Coolant: Carefully refill the cooling system with the correct type and amount of coolant. Refer to your owner's manual for the correct coolant mixture.
11. Bleed the Air from the Cooling System: This is crucial to prevent overheating. Refer to your repair manual for the proper bleeding procedure. It usually involves opening bleed valves at various points in the cooling system.
12. Check for Leaks: Run the engine for a few minutes and carefully inspect for any leaks around the water pump and hoses.
13. Dispose of Old Coolant Properly: Coolant is hazardous waste; dispose of it according to local regulations.
Important Considerations:
* Repair Manual: This is absolutely essential. The steps above are generalized; your specific Cavalier model will have nuances.
* Torque Specifications: Using the wrong torque can severely damage the engine.
* Safety First: Always work in a safe, well-ventilated area. Use jack stands and never work under a vehicle supported only by a jack.
* Professional Help: If you're not comfortable performing this repair, take your vehicle to a qualified mechanic. A botched water pump replacement can lead to serious engine damage.
This is a complex procedure. Do not attempt this repair unless you have experience working on vehicles. Consult a repair manual and if you're unsure about any step, seek professional assistance.
