Home / BMW E90 320d Sedan / Repair Manuals and Technical Data / 13 Fuel preparation and control / 13 51 Injection pump, control section, mixture control unit / Special tools required: 11 8 740 (green arrows). For qualified repairs, contact authorized service centers. Pressure should drop no more than 0.5 bar in that time period. I suggest load testing using a test light and a DVOM. Remove engine cover over fuel injectors. June 19, 2018 : ... where is the fuel pump check valve. Pelican Parts is not responsible for any typographical errors contained within the site. All pictures and references to the Porsche name, and the car names and shapes are for restoration reference only, and do not imply any association with Porsche. SOURCE: Need location of fuel pump on a 1992 BMW 525i straight six engine. fuse box location. BMW E90 3-Series Technical Articles (2006-2011), Page last updated: Wed 10/28/2020 08:48:10 PM. Check out our complete Technical Article Directory for guides to many other procedures. Got more questions? Once you have removed the rear seat, peel the carpet away from the right side rear seat cushion area of body. See our tech article on engine cover removing. Information and technical articles within this website are for reference only. Consult authorized factory manuals when performing repair procedures. If you suspect your fuel pump has failed, you can confirm the fuel pump is received the correct voltage when commanded ON by the fuel pump control module using a digital volt ohm meter (DVOM). Electrical testing Working in rear of vehicle interior; grab corner of rear seat cushion and pull up to detach locking tabs. (green arrow). When testing, I usually see about 10 volts being sent to the fuel pump. Anything more is a problem. First thing you have to do is remove the fuel test port cap. Use the DVOM in conjunction with a wiring diagram to determine the correct terminals for testing. Pelican Parts is not associated with Porsche Cars North America in any manner, except for a mutual appreciation and love of the cars. Once you test pressure. Connect DVOM across fuel pump electrical connector terminals and take a reading, it should read battery volts when key is turned ON. When Start button is pressed, fuel pump will receive voltage for 3-5 seconds, if engine doesn't start. Next, install the fuel pressure gauge connecting line (green arrow). Additional fuses in passenger compartment. See our tech article on engine cover removing. You will find an access cover and will need to remove the screws. In this photo, voltage head steady at current fuel pump demand. SOURCE: Need location of fuel pump on a 1992 BMW 525i straight six engine The fuel pump is located under the back seat on the passenger side. Then connect an incandescent bulb style test light to battery ground and touch the test light probe tip the positive wire you are backprobing with DVOM. You will need an assistant to press the Start Stop button during the testing procedures. If the correct voltage is present, but pump does not activate, it is likely faulty. Then allow fuel system to sit under pressure for 15 minutes. Its causing hard start 3-6 … Fuse and relay box in luggage compartment. The fuel pump module can be activated for testing using a BMW scan tool, if you do not have access to a BMW scan tool, attempting to start the vehicle will also activate the fuel pump control module, the module will send control voltage to the pump. The fuel pump is located under the back seat on the passenger side. For the BMW 3 series (F30/F31/F34) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 model year. Use a fused jumper lead set to battery positive (+) and battery negative (-) and run pump. My 2008 BMW 328xi is NOT holing pressure after engine stop. Now that you have access to the fuel pump terminals, you will connect your DVOM to the terminals by backprobing. Recharge fuel system by cycling key or running fuel pump, note fuel pressure.

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