Safety First:
* Disconnect the negative battery terminal before starting any work.
* Work in a well-ventilated area. Fuel fumes are highly flammable.
* Use appropriate safety glasses and gloves.
* Have a fire extinguisher nearby.
* Consider using fuel-safe containers to catch any spilled fuel.
General Steps (Consult your repair manual for precise details):
1. Prepare the vehicle: Raise the rear of the vehicle securely using jack stands. Never work under a vehicle supported only by a jack.
2. Locate the fuel tank: It's usually located in the trunk or under the rear passenger seat area. You might need to remove some interior trim panels to access it.
3. Disconnect the fuel lines: This is crucial. You'll need to disconnect the fuel feed line and the fuel return line. Use fuel line disconnect tools to avoid damaging the lines. Have rags ready to soak up any spilled fuel.
4. Disconnect the electrical connector: Locate the electrical connector to the fuel pump and carefully disconnect it.
5. Lower the fuel tank: This is the most challenging part. There are usually straps or bolts holding the tank in place. Your repair manual will show you their locations. You'll likely need to carefully lower the tank using jack stands or a suitable support system to avoid damaging the fuel lines or the tank itself. Be cautious—the tank is likely full or partially full of fuel.
6. Access the fuel pump: Once the tank is lowered enough, you should be able to access the fuel pump assembly located at the top of the tank. It's typically secured with a retaining ring or a few bolts.
7. Remove the fuel pump: Once you have access, carefully remove the pump assembly following your repair manual's directions. This might involve removing the fuel pump sender unit as well.
8. Replace or repair the fuel pump: After removing the old pump, install the new pump, ensuring it's properly seated and secured.
9. Reassembly: Reverse the steps above to reassemble everything, carefully connecting the fuel lines and electrical connector. Double-check all connections before lowering the tank fully.
10. Lower the tank: Carefully lower the fuel tank back into position and secure it.
11. Reconnect the fuel lines and electrical connector: Ensure all connections are secure and tight.
12. Reconnect the negative battery terminal: Start the engine and check for leaks. Look for fuel leaks around the fuel lines and the tank.
Important Note: This is a general overview. The exact procedure will vary slightly depending on your specific vehicle's configuration. Always consult a repair manual specific to your 1989 Buick Regal 2.8L for detailed, illustrated instructions. If you're not comfortable performing this repair yourself, take your vehicle to a qualified mechanic. Working with fuel is dangerous; safety should be your top priority.
