What is a fuel pump replacement?

A fuel pump replacement involves confirming that your fuel pump is failing, accessing it, removing it, and replacing it and other surrounding parts if they are also damaged.
The process often involves taking out various components blocking access to the fuel pump. Completing this service may take anywhere from two to five or more hours and cost between $400 and $600.

How to replace a fuel pump

If you think your fuel pump has broken down and needs to be replaced, the mechanic will:
  • Test power to the pump to check whether the pump itself or the power line to the pump is the problem
  • If the pump is defective, gain access to the pump through an access panel above the fuel tank or by draining the fuel tank, removing it, and detaching surrounding supply lines
  • Remove the pump, saving brackets and screens to reuse if possible
  • Replace the in-line external filter if necessary
  • Insert a new pump and hook it up to the supply lines
  • Test the vehicle to ensure the new fuel pump is working

How do I know if I need a fuel pump replacement?

Many symptoms drivers experience, like a stalling engine, weird noises, or decreased fuel efficiency, which could have multiple causes. Your fuel pump may be causing your car issues if any of the following apply to you:
  • Your car has a hard time starting, won’t start, or starts then suddenly stalls
  • The check engine light is on (the car’s system will detect if fuel pressure is lower than normal)
  • You hear a whirring or humming noise coming from the rear of the car, near where the fuel tank sits
Driving with a defective fuel pump usually isn’t dangerous, but you will likely have to deal with a sluggish engine and fuel economy problems. It’s likely that a near-dead fuel pump will prevent you from starting your car at all.

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