Tools You'll Need:
* New serpentine belt: Make sure you get the correct size and type. Your owner's manual or an auto parts store can help with this.
* Wrench(es): You'll likely need various sizes depending on the tensioner pulley system. A socket set with extensions will be helpful.
* Jack and jack stands (strongly recommended): This will give you better access and stability. Never work under a car supported only by a jack.
* Ratchet and sockets: To loosen and tighten the tensioner.
* Gloves: To protect your hands.
* Possibly a belt tensioner tool: Some tensioners require a specialized tool to release tension. Check if your model needs one.
* Shop rags: To clean up any spilled fluids.
Steps:
1. Safety First: Engage the parking brake firmly. Use jack stands to safely lift the front of the car. Disconnect the negative battery terminal to prevent accidental shorts.
2. Locate the Tensioner: Identify the belt tensioner. It's a pulley with a mechanism to create tension on the belt. It's usually on one of the sides of the engine. It may have a bolt that can be turned or a lever you can push or pull.
3. Release Belt Tension: This is the crucial step. The exact method varies slightly depending on your Bonneville's tensioner system. Look closely at the tensioner.
* If it has a bolt: Use the appropriate wrench to loosen (counterclockwise) the tensioner bolt. This will allow you to relieve the tension on the belt. You might need to use a ratchet and extension for better leverage.
* If it has a lever: You may need to use a long pry bar or a specialized tool to push or pull the lever, thereby releasing the tension on the belt.
4. Remove the Old Belt: Once the tension is released, carefully lift the belt off the pulleys. It may help to start at the tensioner pulley.
5. Installation of the New Belt: Carefully guide the new belt onto the pulleys, starting with the crankshaft pulley and working your way around. Make sure the belt sits correctly in all the grooves of each pulley.
6. Re-Tension the Belt: Tighten the tensioner bolt (or release the lever) allowing the tensioner to pull the belt tight. It should have a snug fit, but don't overtighten.
7. Check Belt Alignment and Tension: Visually inspect the belt to ensure it is correctly seated on all pulleys. You should be able to slightly twist the belt with your hand. If it’s too loose or too tight, you will need to adjust the tensioner.
8. Lower the Vehicle: Carefully lower your vehicle from the jack stands.
9. Reconnect the Battery: Reconnect the negative battery terminal.
10. Test Run: Start the engine and listen for any squealing or unusual noises. If you hear anything, double-check the belt tension and alignment.
Important Considerations:
* Diagram: A diagram of your engine's serpentine belt routing is invaluable. Find one online using your engine size or consult a repair manual. Getting the belt on the wrong pulleys will cause problems.
* Professional Help: If you're uncomfortable performing this task, consider taking your car to a mechanic. Incorrect installation can lead to belt failure and engine damage.
* Specific Model Variations: 1997 Bonnevilles had various engine options (V6, V8). The exact procedure may differ slightly based on your specific engine. Therefore, obtaining a repair manual specific to your vehicle's year and engine is highly recommended.
This guide provides a general overview. Always prioritize safety and consult your vehicle's repair manual or a qualified mechanic for detailed instructions specific to your 1997 Pontiac Bonneville.
