Here's a general guide. Specific procedures may vary slightly depending on the engine (3.1L V6, 3.8L V6, etc.) in your Regal. Always consult a repair manual specific to your vehicle's year, make, model, and engine for detailed instructions and diagrams. A Haynes or Chilton manual would be very helpful.
Tools You'll Need:
* New serpentine belt: Make sure you get the correct size and type. Your car's manual or a parts store can help with this.
* Wrench(es): Sizes will vary depending on your engine's specific tensioner. You may need several sizes.
* Socket wrench set: Helpful for accessing some bolts.
* Ratchet: To use with sockets and wrenches.
* Pliers: Possibly needed for hose clamps or other minor adjustments.
* Jack and jack stands: Essential for safe working conditions.
* Wheel chocks: For safety.
* Gloves: Protect your hands.
* Shop rags: For cleaning.
* Penetrating oil (PB Blaster or similar): May help loosen stubborn bolts.
* Torque wrench (optional but recommended): To ensure proper tension on bolts.
General Steps (Consult your repair manual for precise details):
1. Safety First: Engage the parking brake firmly. Use jack stands to securely lift the front of the vehicle after jacking it up. Place wheel chocks behind the rear wheels. Disconnect the negative battery terminal.
2. Locate the Serpentine Belt: Identify the serpentine belt and its routing around the pulleys. Take a picture or sketch before you start removing it, to ensure you reinstall it correctly.
3. Locate the Tensioner: The serpentine belt tensioner is a pulley mechanism that allows you to release tension on the belt. This is crucial for belt removal and installation. Your repair manual will show you where it is.
4. Release Belt Tension: Use the appropriate wrench to loosen or turn the tensioner. This will slacken the belt, allowing you to remove it from the pulleys. This step often requires significant force.
5. Remove the Old Belt: Once the tension is released, carefully remove the old serpentine belt from each pulley.
6. Inspect Pulleys and Tensioner: Inspect the pulleys and tensioner for damage, wear, or cracks. Replace any damaged components.
7. Install the New Belt: Carefully route the new serpentine belt onto each pulley, following the original routing (your picture/sketch will be invaluable here).
8. Re-tension the Belt: Tighten the tensioner pulley to apply the correct amount of tension to the new belt. This is crucial—too loose, and the belt will slip; too tight, and it will put excessive strain on components. Your repair manual will provide guidance on the proper tension.
9. Check Belt Routing: Double-check that the belt is correctly routed over all the pulleys.
10. Lower the Vehicle: Carefully lower the vehicle using the jack.
11. Reconnect the Battery: Reconnect the negative battery terminal.
12. Test Run: Start the engine and listen for any squealing or unusual noises. Check the belt for proper operation.
Important Considerations:
* Tension: Getting the correct belt tension is vital. An improperly tensioned belt will quickly fail.
* Routing: Make absolutely sure the belt follows the correct path around all pulleys. Incorrect routing can damage the belt and other components.
* Specifics: The exact procedure will differ based on your engine. Use a repair manual!
This is a simplified guide. Always consult a repair manual specific to your 1999 Buick Regal for detailed instructions and diagrams. If you're uncomfortable with any step, take your car to a qualified mechanic. Replacing a serpentine belt incorrectly can cause significant engine damage.
