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ONTARIO

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fuel gauge not working
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It shows way past full all the time.

Pulled the power supply to the sender from the gauge and measured the voltage. It was 8 volts.

Pulled the ground wire from the sender off at the ground post on the frame, put a voltmeter in series to the ground and got no volts.

Sounds like the sender is pooched.

Not looking forward to changing that.

I changed the gas filter and could see the filter element looked gummy.

Has anyone else had a problem with certain brands of gas ruining the senders? I remember Shell in Canada having to pay to replace ruined senders because they had a problem at the refinery that produced fuel that left gummy deposits.

If this is the case, is there an additive I could try that might clean things up, rather than replace it?

Thanks, Randy. 



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FORT ERIE, ONT

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I haven't experienced this problem and I just buy cheap gas. I had a rusty gas tank that I had to replace a few years ago and, when I had the tank out, I noticed that my sender was rusty but still in good working order. Since the tank was new, I replaced the sender too.

My guess is that that the wiper on the float arm wore out the resistance windings in the sender.

I got my Spectra tank from Rock Auto and my Spectra sender from Amazon.com.
www.spectrapremium.com/products/fuel_tank.html



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DUNDAS, ONT

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You will only read OHMS coming from the senderNot sure what sender you have but a lot of older ford stuff reduced the dash cluster to 6 volt up to the 60s ? some time . I know if you disconnect the sender wire on a older gm the gauge will read full . but it depends on what you have . Is the float  varnished cork ? I could see ethanol screwing that up? 

Sender values 

ohms_chart.gif



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St THOMAS, ONT

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You're almost correct on the Ford cluster, Slim. The 56 Fords were an oddball, cuz they went to 12 volts, but dropped back down to 6 volts again in 57.

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