Fuel Pump Assembly (Complete) Lancer 2004 – 12 – Genuine

The “Fuel Pump Assembly (Complete) Lancer 2004 – 12 – Genuine” refers to a critical and comprehensive replacement part for Mitsubishi Lancer vehicles manufactured between the model years 2004 and 2012. The term “Genuine” is particularly important here, signifying that the part is an authentic, original equipment manufacturer (OEM) component supplied directly by Mitsubishi or a trusted OEM supplier. This ensures the highest level of quality, fitment, performance, and durability, as it’s designed to meet the exact specifications and standards of the vehicle from the factory.

What it includes (Complete Assembly):

A “complete” fuel pump assembly typically includes all the necessary components for proper fuel delivery from the tank to the engine. For the Mitsubishi Lancer 2004-2012, which usually features an in-tank fuel pump, this assembly generally consists of:

• Fuel Pump Motor: The electric motor that draws fuel from the tank.
• Fuel Level Sending Unit: A float and sensor mechanism that measures the fuel level in the tank and sends this information to the fuel gauge on the dashboard.
• Fuel Filter/Strainer: An initial filter (often a “sock” filter) located at the inlet of the pump, preventing larger debris from entering the pump.
• Fuel Pressure Regulator (sometimes integrated): Helps maintain consistent fuel pressure for the injectors.
• Housing/Module: The plastic or metal housing that contains all these components and fits directly into the fuel tank.
• Wiring Harness and Connectors: For electrical connection.
• Gaskets and Seals: To ensure a proper, leak-free seal when installed in the fuel tank.

Function and Importance:

The fuel pump assembly is the heart of the vehicle’s fuel system. Its primary function is to draw fuel from the fuel tank and deliver it under precise pressure to the engine’s fuel injectors. This consistent and pressurized fuel supply is essential for proper fuel atomization and combustion, which directly impacts engine performance, fuel efficiency, and emissions.

Given that the Mitsubishi Lancer models in this range are now quite old (up to 21 years old as of current date), their original fuel pump assemblies are highly susceptible to wear and failure. Factors like poor fuel quality (which can be a concern in some regions, including Lahore, Pakistan), driving with a consistently low fuel tank (which can cause the pump to overheat as fuel acts as a coolant), and simply age can all contribute to fuel pump degradation.

Signs of a Failing Fuel Pump Assembly:

If the fuel pump assembly begins to fail, you might experience various symptoms, including:

• Difficulty Starting: Especially when the engine is warm.
• Engine Sputtering or Hesitation: Particularly at high speeds or under acceleration, as the pump struggles to maintain consistent fuel pressure.
• Loss of Power: Noticeable when climbing hills or carrying heavy loads.
• Decreased Fuel Efficiency: The engine may compensate for insufficient fuel by running richer.
• Engine Stalling: Especially at idle or under load.
• Unusual Noises from the Fuel Tank: A loud whining, buzzing, or clicking sound coming from the rear of the vehicle, often indicating the pump is struggling.
• Check Engine Light (CEL): The ECU may log codes related to fuel pressure issues.

Replacing the entire fuel pump assembly with a “Genuine” part ensures that all critical components are new and meet Mitsubishi’s rigorous standards, providing reliability and peace of mind, which is especially important for older vehicles like these Lancers still on the roads in Lahore.