Question about 1986 Chevrolet C1500

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I have a 1986 chevy 1/2 ton. the fuel gauge wasn't working so i replaced the sending unit and now when the tank is full the gauge reads at only 1/4 tank...any ideas? i was thinking maybe the gauge itself is hooped

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  • m.hor Apr 30, 2010

    the sending unit is in the tank. i pulled the box and replaced the whole thing but the gauge will only read up to 1/4 tank. i'm going to go pick up a new fuel gauge and see if that is the issue.

  • m.hor May 01, 2010

    hey carsandcomps,

    thanks for the suggestions, i managed to find another gas gauge after going to only 4 wreckers yesterday and threw it in and it worked! i think the bi-metallic strip in the module on the old gauge was either binding up or hooped altogether. thanks again for the ideas though.

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When you changed the sending unit, was this in the tank? or does it have a manual that bolts to the block. If it is on the block, drop the tank (or take the bed off) and replace the float.

carsandcomps,

Guru, Premium Expert @Fixya.com

Posted on Apr 30, 2010

  • Brandon Bruce
    Brandon Bruce May 01, 2010

    okay, make sure too that the wiring is hooked up right. I had a 77 chevy and I put in an aftermarket float system, and the gauge did the same thing. My wires were backwards cause the new one was set up different. Should only be two wires.



    carsandcomps



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