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sparradic fuel guage

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    sparradic fuel guage

    Hey I'm sure its been covered before but can't find anything with the same exact symptoms on the forum.
    One day my fuel guage went nuts and started flickering from full to empty about 5-10 times a second....crazy fast. Been doing that for about a week then just suddenly went limp to empty. Now my fuel guage doesn't work at all. Here's the thing when I fill my car up completely it shows full and stays there until about 10-15 miles of driving then shows empty again. The light does not come on unless I'm truly on e. So that said my guage doesn't work but my light does. I have replaced both fuel level senders with no luck. I have noticed though that if the key is in the off position the guage is below e or off and then when I turn the ignition to the on position the needle moves even lower by about 1/32 of an inch. Barely noticable but if you look closely it does. That said it can't be a fuse but a bad ground perhaps? I've taken the instrument cluster out to try to find the problem with no luck. Have not put an electrical tester on the wires but read in a diagram that there is a specific ground separator or splitter that runs off the wires from the tank. Where is that located? Anyway I'm stumped. Plz help!

    #2
    Is your si board working properly? As in do you have good batteries in your si board? Also check the ground nut behind the fuel gauge on the back of your cluster. If it is loose or missing, it could cause this issue, I think. Anyone else have any ideas?

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      #3
      Si board? Where's that at and what does it look like? How could it affect only my fuel guage? Sorry never heared one lol and the nut on the back was tight.

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        #4
        I'd be more suspicious of bad solder joints on the main PCB in the cluster, damage to the wiring belteen the cluster and the sensors, or a problem the the connectors. A few minutes work with an ohmmeter will tell if the problem is in the cluster or wiring.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

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          #5
          Update....
          In messing with it idk what I did but...now my front Windows don't work.
          I hate my life.

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