Question about 1992 Chevrolet K1500

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I recently asked about a fuel gauge that is reading full all the time on a silverado 1500 5.7L tbi. when i disconnect the fuel pump harness, the gauge goes further past full. i noticed the ground from the sender unit which is bolted to the frame is really really rusty. would this not allow my fuel gauge to go down and or ready accurately?

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Most likely its the ground wire clean it up or replace it, and i bet the guage will read corectly.

Posted on Sep 12, 2009

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Posted on Jan 02, 2017

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SOURCE: i recently asked about a fuel gauge that is

Absolutely, your gauge works off of resistance that is calibrated, if you have a rusty or bad ground you are causing more resistance, hence a full reading. Disconnecting it puts it to its default setting which is full, All the resistance in the unclean ground is tricking your sender in to thinking tank is full...

Posted on Sep 12, 2009

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I recently asked about a fuel gauge that is reading full all the time on a silverado 1500 5.7L tbi. when i disconnect the fuel pump harness, the gauge goes further past full. i noticed the ground from the...


Absolutely, your gauge works off of resistance that is calibrated, if you have a rusty or bad ground you are causing more resistance, hence a full reading. Disconnecting it puts it to its default setting which is full, All the resistance in the unclean ground is tricking your sender in to thinking tank is full...

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