Safety First:
* Disconnect the negative battery terminal before starting any work.
* Allow the engine to cool completely before working on it to avoid burns.
* Use jack stands to safely support the vehicle. Never work under a vehicle supported only by a jack.
* Wear safety glasses to protect your eyes.
* Use appropriate gloves.
Tools and Materials You'll Likely Need:
* Repair manual specific to your 1999 Oldsmobile Intrigue
* Socket set (metric)
* Wrenches (metric)
* Ratcheting wrench
* Screwdrivers (Phillips and flathead)
* Pliers
* Drain pan
* New water pump (ensure it's the correct one for your vehicle)
* New thermostat (recommended to replace while you're in there)
* New coolant (the correct type for your vehicle)
* New gasket(s) for the water pump
* Jack and jack stands
* Funnel
* Rags or shop towels
General Steps (Consult your repair manual for specifics):
1. Drain the coolant: Locate the radiator drain petcock (usually at the bottom of the radiator) and carefully open it to drain the coolant into your drain pan.
2. Remove the serpentine belt: Use the appropriate tool (belt tensioner tool is usually necessary) to release the tension on the serpentine belt and remove it. Diagram your belt routing before removal to ensure proper reinstallation.
3. Remove components obstructing access to the water pump: This may include various pulleys, hoses, and possibly the fan shroud. Your repair manual will detail exactly which components need to be removed. Take pictures as you go to aid in reassembly.
4. Remove the water pump: This often involves removing bolts that hold the water pump to the engine block. Be careful not to damage the gasket. The pump itself can sometimes be stubborn; you may need to gently tap it loose with a mallet and a soft-faced hammer.
5. Replace the water pump gasket: Thoroughly clean the mating surfaces of the engine block and the new water pump to ensure a good seal. Apply a thin layer of gasket sealant (if specified in your repair manual) to the new gasket.
6. Install the new water pump: Carefully align the new water pump and secure it with the bolts, tightening them to the specifications listed in your repair manual.
7. Reinstall components: Reinstall all components removed in step 3, ensuring everything is properly connected and seated.
8. Reinstall the serpentine belt: Make sure the belt is properly routed according to your diagram or repair manual.
9. Refill the cooling system: Carefully add the correct type and amount of coolant to the radiator and overflow reservoir. Consult your owner's manual for the proper coolant mixture.
10. Bleed the cooling system: This is crucial to remove air pockets from the system. Run the engine until it reaches operating temperature, then let it cool down. Check for leaks. Repeat this process if necessary.
11. Reconnect the battery: Reconnect the negative battery terminal.
Important Considerations:
* This is a complex job. If you lack experience with auto repair, it's strongly recommended to take your vehicle to a qualified mechanic. Improperly installing a water pump can lead to engine damage.
* Torque specifications are critical. Use a torque wrench to tighten bolts to the correct specifications to prevent damage.
* Always consult your repair manual. This guide is a general overview; your repair manual will provide specific instructions and diagrams for your vehicle.
This is a simplified overview. The actual process can be much more involved depending on your specific vehicle and your access to tools and knowledge. A quality repair manual is essential for successfully completing this task. If you're unsure about any step, it's best to seek professional help.
