Here's a general overview. This is not a comprehensive guide, and you should consult a repair manual specific to your 1986 Oldsmobile Toronado for detailed instructions and diagrams. Improperly performing this task can lead to injury or damage.
Safety Precautions:
* Disconnect the negative battery terminal. This is crucial to prevent sparks.
* Ventilate the area well. Gasoline fumes are extremely flammable and dangerous.
* Wear safety glasses and gloves.
* Have a fire extinguisher nearby.
* Work in a well-lit area.
* Use jack stands, never rely solely on a jack.
* Be aware of fuel lines and other components; avoid puncturing or damaging them.
General Steps (Consult your repair manual for specifics):
1. Prepare the Vehicle: Securely raise the rear of the vehicle and support it with jack stands. Locate the fuel tank. The tank is usually located behind the rear axle.
2. Disconnect Fuel Lines: Carefully disconnect the fuel supply and return lines from the fuel pump. You'll likely need fuel line disconnect tools to avoid damaging the lines. Have a container ready to catch any residual fuel in the lines. Carefully note how the lines are connected for reassembly.
3. Disconnect Electrical Connections: Disconnect the electrical connector from the fuel pump. Again, carefully note the connection.
4. Access the Fuel Pump: This is where the complexity varies by model. Some Toronados might require dropping the fuel tank entirely, while others may offer access through a dedicated access panel. Your repair manual will detail this. If dropping the tank, you'll likely need to disconnect the fuel tank straps, fuel sender unit (if integrated), and potentially the exhaust system to gain enough clearance.
5. Remove the Fuel Pump: Once you have access, remove the fuel pump assembly. This often involves removing retaining bolts or clips. The pump might be a unit with the sending unit integrated.
6. Install the New Fuel Pump: Install the new fuel pump assembly, ensuring it's seated correctly. Re-attach any retaining bolts or clips.
7. Reconnect Everything: Reconnect the fuel lines, electrical connections, and the fuel tank (if removed). Double-check all connections.
8. Lower the Vehicle: Carefully lower the vehicle.
9. Check for Leaks: Inspect all fuel lines and connections for leaks.
10. Prime the Fuel System (if necessary): Some vehicles require priming the fuel system after a fuel pump replacement. Your repair manual will advise on this.
11. Start the Engine: Start the engine and check for proper operation. Listen for any unusual noises from the fuel pump. Check for leaks.
Important Considerations:
* Repair Manual: A Haynes or Chilton repair manual specific to your 1986 Oldsmobile Toronado is invaluable for step-by-step instructions and diagrams.
* Tools: You'll need various tools, including sockets, wrenches, jack stands, fuel line disconnect tools, and possibly a fuel pump removal tool.
* Fuel Pump: Ensure you purchase the correct fuel pump for your specific model and engine.
* Professional Help: If you're not comfortable working on vehicles, it's best to take it to a qualified mechanic.
This is a complex repair. Attempting it without proper knowledge and tools could lead to damage, injury, or fire. Always prioritize safety and consult a reliable repair manual before beginning.
