Tools You'll Likely Need:
* Wrench Set: Various sizes, including metric. You'll need to identify the specific bolt sizes from your repair manual.
* Socket Set: Similar to wrenches, but with sockets for easier access to some bolts.
* Ratchet: To quickly turn sockets.
* Extension Bars: To reach difficult-to-access bolts.
* Pliers: Possibly needle-nose pliers for electrical connections.
* Screwdrivers: Both Phillips and flathead, depending on your car's specific mounting hardware.
* Jack and Jack Stands: Essential for safety. Never work under a vehicle supported only by a jack.
* Wheel Chocks: To secure the vehicle.
* Battery Terminal Cleaner: To ensure good connections.
* New Alternator: Make sure you get the correct replacement alternator for your specific Aurora model and engine.
* Gloves and Safety Glasses: Always protect yourself.
General Steps (Consult your repair manual for precise details):
1. Disconnect the Battery: This is the *most crucial* first step. Disconnect the negative (-) terminal first, then the positive (+) terminal. This prevents accidental shorts and electrical shocks.
2. Access the Alternator: On the Aurora, the alternator is usually located near the engine's front, typically on the passenger side (right side in most North American vehicles). You'll likely need to remove some components to gain access, such as:
* Air Intake System: Possibly some hoses or parts of the air box.
* Serpentine Belt: This is usually necessary; you'll need a belt tensioner tool to release the tension and remove the belt. Some Auroras might have an easier belt routing than others.
* Wiring Harness: Unplug the wiring harness connected to the alternator. Note the connections carefully before disconnecting.
* Mounting Bolts: The alternator is held in place by several bolts. Loosen these bolts before attempting to remove the alternator.
3. Remove the Alternator: Once the belt, wiring, and bolts are addressed, carefully remove the alternator. It might be heavy, so be prepared.
4. Install the New Alternator: Mount the new alternator in the reverse order of removal, ensuring everything is properly aligned and secured. Reconnect the wiring harness. Make sure the connections are solid and there are no exposed wires.
5. Reinstall the Serpentine Belt: Carefully route the serpentine belt over all pulleys. Use the belt tensioner to properly tension the belt before securing it.
6. Reconnect the Battery: Reconnect the positive (+) terminal first, then the negative (-) terminal.
7. Test the Alternator: Start the engine and check the battery voltage using a voltmeter. The voltage should be around 13.5-14.5 volts while the engine is running. A lower voltage indicates a problem, even with a new alternator. This test might require a mechanic’s expertise to find other fault possibilities.
Important Considerations:
* Serpentine Belt Tensioner: This tool is essential for removing and installing the serpentine belt properly. Trying to remove the belt without it could damage the tensioner or other components.
* Wiring Connections: Pay close attention to the wiring connections. Incorrect connections can damage the alternator or other electrical components.
* Torque Specifications: Your repair manual will provide the correct torque specifications for all bolts. Over-tightening can damage components, while under-tightening can lead to loose parts.
* Professional Assistance: If you are not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic.
Again, a repair manual specific to your 1996 Oldsmobile Aurora is crucial. This information is a general guide only. Improper repair can lead to significant damage or injury. Safety is paramount.
