Here's a general overview of the process, but always defer to your repair manual:
1. Gather Tools and Materials:
* New Serpentine Belt: Make absolutely sure you get the correct belt for your 1997 Oldsmobile LSS. The wrong size will not work.
* Socket Set and Wrenches: You'll need various sizes to loosen and tighten the belt tensioner and any other pulleys involved in routing the belt.
* Ratchet and Extensions: To reach hard-to-access bolts.
* Wrench for Belt Tensioner: This is often a special tool, but sometimes a long handled wrench can work by leveraging against the tensioner.
* Gloves: To protect your hands.
* Jack and Jack Stands (highly recommended): For safety and easier access. Never work under a car supported only by a jack.
* Shop Rags or Paper Towels: To clean up any spilled fluids.
* Repair Manual (absolutely essential): Provides precise details for your vehicle.
2. Preparation:
* Safety First: Disconnect the negative battery terminal.
* Vehicle Preparation: Raise the vehicle securely using a jack and jack stands. Consult your owner's manual for jack points.
* Locate the Belt: Identify the serpentine belt and its routing around the pulleys. Take pictures before you start. This will be incredibly helpful when reinstalling the belt.
3. Removing the Old Belt:
* Locate the Belt Tensioner: This is a pulley with a mechanism to release tension on the belt. Your repair manual will show you exactly where it is and how to release it.
* Release Tension: Use the appropriate tool (often a special wrench) to release the tension on the belt tensioner. This will allow you to loosen the belt from the pulleys.
* Remove the Belt: Carefully work the belt off the pulleys, one pulley at a time.
4. Installing the New Belt:
* Route the New Belt: Carefully route the new belt around all the pulleys, following the same path as the old belt. Refer to your pictures and repair manual. Ensure the belt is properly seated on all pulleys.
* Tighten the Tensioner: Carefully release the tensioner and allow it to return to its normal position, tightening the belt.
* Check Belt Tension: The belt should have some slight give but not be too loose or too tight. Your repair manual will likely specify a proper tension measurement.
5. Final Steps:
* Lower the Vehicle: Carefully lower the vehicle to the ground.
* Reconnect the Battery: Reconnect the negative battery terminal.
* Test the System: Start the engine and listen for any unusual noises. Check the belt for proper tracking and tension.
Important Considerations:
* Broken Belt Tensioner: If the belt tensioner is broken or seized, you'll need to replace it before installing the new belt.
* Pulley Condition: Inspect the pulleys for damage or wear. Worn pulleys can cause premature belt failure.
* Belt Routing: Getting the belt routed correctly is crucial. Misrouting can lead to belt slippage or breakage.
* Difficulty: Accessing the tensioner and routing the belt can be challenging depending on your experience level.
This is a simplified explanation. Do not attempt this repair without a repair manual specific to your 1997 Oldsmobile LSS. If you're not comfortable with this type of repair, it's best to take your vehicle to a qualified mechanic. Improperly installing the belt can cause serious damage to your engine.
