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Thread: 1992 500E strange fuel pump sound

  1. #1

    1992 500E strange fuel pump sound

    Hi all,
    my fuel pumps sounds strange. Please have a look on a video. When I connect power directly they work ok.
    Is it normal or sth related to bad relay or?
    thanks


    https://www.youtube.com/watch?v=Ozlo8T7axw8

  2. #2
    .036 Hoonigan™
    E500E Boffin
    gsxr's Avatar
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    Re: 1992 500E strange fuel pump sound

    That isn't normal. Pull up the rear seat bottom (passenger side) and see if the relay is clicking. If so, your LH module needs repair or replacement.

    Dave M.
    1997 E420 (Bugeyes)
    1994 E420 (Blondie)
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    1992 500E (Mach 5)
    1987 300D (Sportline Stage 2)
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  4. #3
    postwhore posterchild Klink's Avatar
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    Re: 1992 500E strange fuel pump sound

    Quote Originally Posted by chrisro View Post
    Hi all,
    my fuel pumps sounds strange. Please have a look on a video. When I connect power directly they work ok.
    Is it normal or sth related to bad relay or?
    thanks
    Quote Originally Posted by gsxr View Post
    That isn't normal. Pull up the rear seat bottom (passenger side) and see if the relay is clicking. If so, your LH module needs repair or replacement.

    Plus eleventy-billion, what Gixxer said. About a 99% chance that IS your problem.
    Putting the fun in dysfunction...

  5. The Following User Says Thank You to Klink For This Useful Post:

    gsxr (4 Weeks Ago)

  6. #4

    Re: 1992 500E strange fuel pump sound

    Replaced electrolytes in LH and Pump sound nice!
    Thanks

  7. The Following User Says Thank You to chrisro For This Useful Post:

    gsxr (2 Weeks Ago)

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