Delphi FG1289 Fuel Pump Module Assembly

Delphi Fuel Pump Module Assembly Overview

The Delphi FG1289 fuel pump module assembly is designed for reliable fuel delivery in select Buick and Cadillac models. Engineered as an in-tank electric fuel pump, it supports gas fuel systems with integrated components to maintain consistent pressure and flow.

• Outlet outside diameter: 0.375 inches
• Voltage: 12.0 volts
• Fuel type: Gasoline
• Includes fuel pressure regulator and internal strainer
• Maximum pressure rating: 94 psi
• System operating pressure: 58 psi
• Blade-type terminals, 4 male terminals
• Quick connect outlet with one outlet port
• Includes gasket and seal for installation
• Vapor pressure sensor integrated
• Average current draw: 8 amps
• Average flow rating: 65 liters per hour

Technical Details and Features

The Delphi FG1289 fuel pump module assembly is an electric in-tank pump designed specifically for gas fuel systems in Buick DTS and Cadillac Lucerne vehicles. It features a 12-volt operation with a maximum pressure capacity of 94 psi and a system pressure of 58 psi, ensuring stable fuel delivery under various driving conditions. The module includes a built-in fuel pressure regulator and an internal strainer to protect the fuel system from contaminants. The quick connect outlet with a 0.375-inch diameter allows for straightforward installation and secure fuel line connection. Four blade-type male terminals provide reliable electrical connectivity, while the included gasket and seal help maintain a proper fuel-tight installation. Additionally, the vapor pressure sensor supports emissions control systems.

Compatible Vehicles and Applications

This fuel pump module assembly is compatible with the following vehicles:

• Buick DTS
• Cadillac Lucerne

It is intended as a standard replacement part for fuel delivery system maintenance or repair in these models, addressing issues related to fuel pressure and flow.

Common Issues Addressed by Delphi FG1289

• Fuel delivery interruptions causing engine stalling or hesitation
• Low fuel pressure affecting engine performance
• Fuel pump noise or failure due to worn internal components
• Contaminant buildup causing fuel filter clogging
• Faulty vapor pressure sensor impacting emissions control

Installation Notes and Tips

Installation of the Delphi FG1289 fuel pump module assembly requires removal of the fuel tank to access the in-tank pump. Ensure the vehicle’s battery is disconnected before beginning work to prevent electrical hazards. Use the included gasket and seal to prevent fuel leaks and verify that all electrical connections are secure with the blade-type terminals. The quick connect outlet simplifies fuel line attachment, but confirm proper seating to avoid leaks. Follow manufacturer torque specifications for any fasteners and test the fuel system pressure after installation to confirm proper operation.

Quality Assurance and Warranty

Delphi fuel pump modules are manufactured to meet OEM specifications for fit, form, and function. The FG1289 is a standard replacement grade part designed to provide reliable service life. It includes a fuel pressure regulator and vapor pressure sensor to maintain system integrity. Warranty coverage details should be confirmed with the point of purchase, but Delphi typically offers limited warranties covering defects in materials and workmanship.