Symptoms of a bad fuel pump module
External electric fuel pumps sit outside the fuel tank.Įlectric fuel pumps are powered and receive instructions from the Powertrain Control Module (PCM) and Engine Control Unit (ECU). These pumps are designed to be submerged in gasoline. These pumps do not have diaphragms or plungers that pull the gasoline but instead pushes gasoline through the different components with an electric motor.Įlectrical fuel pumps can be mounted inside the fuel tank on a bracket that can be accessed from an access port on top of the tank. Modern vehicles with a fuel injection system have electric fuel pumps. The fuel is regulated with an inlet valve closing when fuel in the float bowl of the carburetor is filled and opening when more fuel is needed.Ĭommon issues of mechanical fuel pumps include fuel leakage from the diaphragm into the crankcase, vapor lock in the pump, faulty diaphragm spring, and too low fuel pressure. They are normally mounted on the engine block with the engine’s camshaft operating the pump. Mechanical fuel pumps use a pulling force to get the gasoline through the different components.
They can be easier to access and would, in turn, have a lowered labor cost. Mechanical fuel pumps may be the more convenient and less costly of the pumps to choose from. Automobiles with engines rated under 450hp work well with them. Older vehicles that have a carburetor will have a mechanical fuel pump with either a diaphragm or plunger-type pump. The pump must produce a certain pressure specified by the manufacturer. Modern-day vehicles that require more pressurized fuel supply than mechanical fuel pumps can deliver will have an electronically operated fuel pump or fuel module that is mounted on or in the gas tank.įuel pumps have various components that work together to send fuel from the gas tank, through the fuel filter, to the fuel rail, distributed into the injectors, and sprayed into each engine cylinder combustion chamber. CarsĪutomotive fuel pumps are either mechanically or electronically operated. Here is a chart from that shows the average cost of fuel pump replacement for different vehicles. More expensive vehicles with complex designs can cost $2,500 to have a fuel pump replaced. Good quality fuel pump sets can cost between $200 to $1000. You may be able to find fuel pump parts for $50. How Much Does a Fuel Pump Replacement Cost?Īs per data – “ The average fuel pump replacement cost is between $834 and $874 with about 80% of the cost being the cost of the parts“. We will also go through fuel pump repair cost breakdown.
We will explain the types of fuel pumps, the signs of a bad fuel pump, and how a good mechanic will replace the fuel pump. So how much will it cost to fix the fuel pump? As per, a complete fuel pump replacement cost at a mechanic shop can land anywhere between $532.97 and $1,187.35 depending on factors such as the vehicle’s make and model and where the vehicle is fixed. If this necessary component is failing, it can cause severe drivability and performance issues and has to be dealt with if you want a reliable, driveable vehicle. With a malfunctioning fuel pump, the engine won’t have fuel to keep the vehicle running. Is it time to replace the fuel pump? The fuel pump is responsible for transferring fuel from the gas tank to the vehicle’s engine.