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Bilge Pump Not Working

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  • Bilge Pump Not Working

    My front bilge pump is not working in auto or manual mode. I pulled the cooler to get to the electrical connection above the fuel tank and tried testing the female (switch) side with my multi meter to check for voltage. When I tried any combination of the leads the volt meter would jump around and never really settle.

    Is there anything else that I can try to determine if it's the pump or something upstream of the pump? Are there any bench tests I can do on the pump itself?

  • #2
    jumping around is a weird reading. Did you have it on AC voltage by chance instead of DC?

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    • #3
      My multi meter just has one setting for both AC and DC voltage. I was thinking that I could bench test it with a 12V battery but didn't want to overload the pump if it in fact does still work.

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      • #4
        Originally posted by JohnWilly View Post
        My multi meter just has one setting for both AC and DC voltage. I was thinking that I could bench test it with a 12V battery but didn't want to overload the pump if it in fact does still work.
        wont overload it doing that so long as you dont go 2 12v in series to make 24 V vrooom

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        • #5
          Any 12V battery will work? I have a spare marine 12V on my bench at the moment.

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          • #6
            Yes, any 12 volt will work.

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            • #7
              Thanks for the info. I will give this a try tonight to see if it's the pump or just the switch.

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