Find the fuel pump relay for your vehicle

Fuel pump relay for cars: find out more! How to choose, when to change , and how much they cost

The fuel pump relay is an element of the fuel system that performs pump start function. The relay operation ensures fuel supply to the engine. This element also regulates the engine rpm by enabling or disabling the fuel pump as necessary.

Types of pump relays

• devices with four contacts;
• devices with five contacts (used in most modern cars).

Construction of fuel pump relay

The component is located in the fuse relay box under car hood, next to the fuses. The component construction includes a housing, an electric connector for current supply, a coil with a core, movable and fixed contacts. In the relay, internal contacts get connected under the influence of electric current.

Fuel pump relay operation tips

Vehicle manufacturer determines a service life of the component. To avoid premature failure of the component, follow the next recommendations:

• purchase only quality relays made of durable, wear-resistant materials;
• entrust installation of the component to professionals at a service station;
• follow the schedule of vehicle maintenance.

Malfunctions of fuel pump relays

• breakage of relay circuit;
• oxidation or breakage of wires;
• deformation of housing;
• melting of contact holders areas;
• carbon between contacts.

Signs of fuel pump relays malfunctions

• continuing of the fuel pump operation even at turned off engine;
• fuel pump cannot be activated;
• troubled engine start;
• sudden engine stop.

Causes of fuel pump relay malfunctions

• incorrect wiring connection;
• poor quality of coil materials;
• exceeding of component service life.

Replacement of fuel pump relays

It is impractical to repair the relay. Since the fuel pump start and normal operation of the engine depend on the component operability, component should be replaced if broken down. It is recommended to replace relay at a service station.

AutoDoc professional assistance

Spare parts for all systems of vehicles of the most famous brands are presented in our company. All components are notable for high quality and reasonable prices. You can buy a fuel pump relay with at least 2-year warranty. When selecting and ordering items from our online-shop, you can ask our technical support service professionals all your questions