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Fuel Gauge Problems

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Section - My boat fuel gauge reads empty with the key off. All the way full with ...
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  1. #1
    Status : Offline
    Member Since : Mar 2012
    Roughneck Bass Boat
    Posts : 1

    Default Fuel Gauge Problems

    My boat fuel gauge reads empty with the key off. All the way full with the key on even though the tank is 1/4 full. I've replaced the gauge, sending unit, and wire from the gauge to the sending unit. Any ideas how to fix this?

  2. #2
    Cap'n Ray's Avatar
    Status : Offline
    Member Since : Sep 2011
    Home Port : SW Florida
    Boat's Name : Bali Hai
    1988 Carver 3207
    Posts : 1,845


    Is the ground wire to the fuel tank intact? If there is not a low resistance path to ground (negative terminal on the battery) the gauge could act like that.

  3. #3
    TimG's Avatar
    Status : Offline
    Member Since : Dec 2009
    Home Port : Olive Branch, MS
    Boat's Name : "WooHoo"
    1986 Cruisers Elegante 297
    Posts : 3,039


    Also here is a good troubleshooting guide that should help you narrow down the problem as well. It is possible that it could be in the switch as well.
    Last edited by Cap'n Ray; March 19th, 2012 at 15:30.
    ~ on the hook ~

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