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Fuel pump relay works sometimes and other times it does not

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    Fuel pump relay works sometimes and other times it does not

    Dies this mean my relay is bad or is it something else causing sorry for the noobie questions just trying to learn

    #2
    With the ignition set to ON, if you jump the relay at pin 87 and 30 in the relay connector (check the bottom of the relay for pin numbers), does the fuel pump turn on?

    Check for voltage going into the relay connector as well
    Last edited by Sea Aych; 05-20-2015, 09:01 AM.
    1988 Atlantisblau Euro/Japanese 325i Cabriolet
    1989 Schwartz 325i - now M50 powered! - now very dead
    1998 Toyota 4Runner Limited
    My 17,000km Big NA National Parks trip!

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      #3
      Get a bentley if you don't have one! I will post up a couple of the tests you should do later when I check which pins to tap into.
      BMW tech
      Umass Amherst
      05 wrx sti

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        #4
        My old relay was giving me significant fuel issues(car shutting off basically), luckily the relay itself isn't expensive to replace. (~$15)

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