Fuel Pump Assemblies
EFI fuel pump assembliesis a combination of a electric fuel pump, a fuel gauge sending unit, a pressure regulator valve, a fuel tank pressure sensor. It is an important part of the electronic fuel injection system of automotive fuel system parts. Fuel pump and assembly's basic function is to provide fuel with certain pressure to the engine fuel injection system. Therefore, the quality of the EFI fuel pump assembly will directly affect the working condition of the fuel injection system.
Fuel Pump Module AssemblyFunctions
The function of the automotive fuel pump is to suck out the fuel from the fuel tank, pressurize it and deliver it to the fuel supply pipe, and cooperate with the fuel pressure regulator to establish a certain fuel pressure. If it is broken, it will cause the fuel pump module assembly to collapse and the vehicle cannot be started; the fuel supply pressure is reduced, and there is no sound of the fuel pump running; the acceleration is weak, and there will be abnormal noises when driving; the engine fault light is on, the engine vibrates abnormally; it is difficult to start when starting, it takes a long time to turn on the vehicle.
Fuel pump module assembly failure can be determined by an on-board inspection.
Connect the fuel pump test terminal on the diagnostic base to the 12V power supply with a special wire;
Turn the ignition switch to the "ON" position, but do not start the engine;
Unscrew the fuel tank cap, you can hear the sound of the fuel pump working, or you should feel the pressure when you squeeze the fuel hose with your hand;
If the working sound of the fuel pump cannot be heard or there is no pressure in the fuel inlet pipe, the fuel pump should be repaired or replaced;
If the fuel pump fails to work, and the above inspections are normal, check whether the fuel pump circuit wires, relays, and fuses of the fusible link are open.
Note when disassembling the fuel pump, please release the fuel system pressure and turn off the electrical equipment. After removing the fuel pump, measure the resistance between the two terminals of the fuel pump, it should be 2~3Ω. Use the battery to directly energize the fuel pump, and you should hear the sound of the high-speed rotation of the fuel pump motor. Note: the energization time should not be too long.
How Long Does A Fuel Pump Assembly Last?
Around 100,000 miles. Fuel pumps are meant to last around 100,000 miles, but most people never have to replace their fuel pumps. They are typically built to last since they are positioned in a hard-to-access place within your fuel tank
If you need any kinds of car spares and parts, please contact us, as one of the most professional car spares suppliers, MAPMS is willing to offer you high quality products.
Send product request
Other supplier products
 |
Air Filters Application | Air Filter Application The vehicle engine needs to inhale a lot of air during the working process, and the air contains a lot of dust and partic... |
 |
Windshield Wiper System | The custom windshield wiper systemis not only as simple as wiping the water off the windshield, but also wipes the rainwater on the glass surface i... |
 |
Car Engine Oil Filters | Under normal circumstances, the operation of engine parts will produce metal debris, incoming dust, carbon deposits oxidized at high temperatures, ... |
 |
Windshield Wiper System | The system is not only as simple as wiping the water off the windshield, but also wipes the rainwater on the glass surface into a uniform water fil... |
 |
Camshaft Position Sensor Application | The cam valve sensorcollects the position signal of the valve camshaft and inputs it to the ECU, so that the ECU can identify the compression top d... |
Same products
 |
15 Inch Capacitive Touch Screen Panel for Medical & Multi-Application Equipment | Seller: SEMIJEI TECHNOLOGY LTD | 15 Inch Capacitive Touch Screen Panel for Medical & Multi-Application Equipment 15 Inch Ca... |
 |
Custom Size 11.6 Inch Circular Shape Touch Screen With ILITEK Controller | Seller: SEMIJEI TECHNOLOGY LTD | Custom Size 11.6 Inch Circular Shape Touch Screen With ILITEK Controller Semijei-Tech's11.6 in... |
 |
10.6 Inch Custom Shape Touch Screen With Multi-Touch for Commercial Systems | Seller: SEMIJEI TECHNOLOGY LTD | Semijei-Tech's10.6 inch custom shape touch screenis a projected capacitive touch panel develope... |
 |
Semijei-Tech's 10.1 inch | Seller: SEMIJEI TECHNOLOGY LTD | Semijei-Tech's10.1 inch waterproof mirror glass multi-touch panelcombines projected capacitive ... |
 |
7" I²C Glove Touch Capacitive Touch Panel | Seller: SEMIJEI TECHNOLOGY LTD | 7" I²C Glove Touch Capacitive Touch Panel 7 Inch Glove Touch Capacitive Touch Panelfor In... |
