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    fuel sending units

    I have a 1989 325i..why does my car have 2 fuel sending units ??

    #2
    Do you mean for the fuel gauge? I always thought one was for the warning light, but I suppose they could average out the feul level since it's a split tank. But I don't know for sure.

    Sarcasm is a body's natural defense against stupid.
    When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's £3.95 per minute.
    "My mother never saw the irony in calling me a son-of-a-bitch." Jack Nicholson"
    Old age and treachery will always overcome youth and skill.



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      #3
      "averages" the two saddles basically, wired in series. the low fuel switch is only part of the pass side sender

      i have the 325 tank, but only with one sender on the pass side. fuel gauge swings a good bit, but my fuel pressure stays rock solid.
      James
      '88 M3

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        #4
        See I just learned something. Never really tried to find out why there are two units. Of course never had any problems with them either.......pumps? Now that's a different story.

        Sarcasm is a body's natural defense against stupid.
        When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's £3.95 per minute.
        "My mother never saw the irony in calling me a son-of-a-bitch." Jack Nicholson"
        Old age and treachery will always overcome youth and skill.



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