Use a fused jumper lead set to battery positive (+) and battery negative (-) and run pump. Old thread but just wanted to let members know in case someone else searches for this issue. Upon replacing the both primary and auxiliary fuel pumps the problem still continued. These cookies will be stored in your browser only with your consent. Instead of seeing what we are used to, battery volts supplied to the fuel pump, we now see a voltage dependent on fuel supply demand from the DME. If you replace the pump make sure to have a bucket with you since the pump will have gasoline in it and you'll be carrying it trough the interior of the car.
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(green arrow), Hold the carpet out of the way, and then remove four 10mm nuts from access panel. Spare fuses and a pair of plastic forceps are set in holders on the distributor box.
To check a fuse, look at the silver-colored band inside the fuse.
Information and technical articles within this website are for reference only. The use of a fuse with a rating other than indicated may result in a dangerous electrical system overload. Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged. do I need to take it to dealer for reprograming or is not ... i do know that it is recommended to replace both the pump and module at the same time. There's a DIY for the fuel pump in the DIY section IIRC. Join us in our BMW E90 Technical Forum Message Board and ask a question to one of our many automotive experts. ... Where the fuel filter is located.
This website uses cookies to improve your experience. This website uses cookies to improve your experience while you navigate through the website. Applies to: 325i (2006), 325Xi (2006), 330i (2006), 330xi (2006), 328i (2007-2009), 335i (2007-2009). Green arrow points to where positive (+) lead goes, Yellow arrow points to where negative (-) lead goes. The Hummer had a high fuel pressure issue. I had this happen to be due to my fuel pump giving out. This site was designed and produced solely by Pelican Parts. Use the DVOM in conjunction with a wiring diagram to determine the correct terminals for testing. Now that you have access to the fuel pump terminals, you will connect your DVOM to the terminals by backprobing. You also have the option to opt-out of these cookies. If a properly rated fuse continues to blow, it indicates a problem in the circuit that must be corrected. Once you test pressure. For me and the Hummer, it turned out to be the fuel pump control module. http://www.pelicanparts.com/bmw/catalog/shopcart/TOOL/POR_TOOL_WTD049_pg10.htm. Pelican Parts is not responsible for any typographical errors contained within the site. Be sure that all test hoses are installed and routed properly. I suggest load testing using a test light and a DVOM. On E90 models, a fuel pump control module is used in place on the fuel pump relay. Fuse box diagram (fuse layout), location and assignment of fuses BMW 3-Series E90/E91/E92/E93 (2005, 2006, 2007, 2008, 2009, 2010) 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi and M3. Be sure to replace a bad fuse with a new one of the identical size and rating. So recently my fuse for the fuel pump was blown. We'll assume you're ok with this, but you can opt-out if you wish. In this tech article, I will go over how to test fuel pressure and volume. I tried to look for reasons why that happened, and while doing that another fuse was blown after a couple hours of putting it in. Remove access panel lid from body by lifting up. All Rights Reserved. On E90 models, a fuel pump control module is used in place on the fuel pump relay. See our tech article on Seats, removing. Fuel pump relay: R9: Terminal 15 relay: F1 (15A) ^08/05: Transmission control module (TCM) F2 (5A)Aerial selection control module. Green arrow points to where positive lead goes, Yellow arrow points to where black lead goes. But opting out of some of these cookies may have an effect on your browsing experience. When Start button is pressed, fuel pump will receive voltage for 3-5 seconds, if engine doesn't start. Your reading should hold steady, a maximum drop in voltage of 0.5 volts is OK. Then install the fuel pressure gauge. So my question is: Are you sure its not a bad pump? Got more questions? First thing you have to do is remove the fuel test port cap. When they fail completely you may be left with an engine that doesn't start. Press Start Stop key like you wanted to start the engine, allow engine to crank if it doesn't start, DVOM should read around 10 volts. Connect DVOM across fuel pump electrical connector terminals and take a reading, it should read battery volts when key is turned ON. F8 (5A) CD changer. Necessary cookies are absolutely essential for the website to function properly.
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