Fuel Gauge Blues

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firewolf3640

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zebulon, NC
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Alex
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1986
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C20
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5.7 350
So, Im sure this has been addressed before but here we go. My fuel gauge sits at 1/4 tank all the time. Been doing my own research and may have the answer, or at least half of it. From what Ive found, there is a ceramic resistor on the back of the gauge. When it fails, the 1/4 tank reading is a common occurrence. A lot of people have said they replaced the whole gauge, which seemed to work about half the time. My question is two part; where can I get a new resistor, if its even possible? And does anyone know, do replacement gauges (LMC, for instance) come with a new resistor, or has that resistor been eliminated through advances in technology? Sorry if this is a dumb question or a duplicate post, just having trouble finding answers.
 

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Jgonick

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West Texas
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Joel
Truck Year
1985
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K10
Engine Size
350
I briefly looked for a ceramic resistor ~90 ohms- I didn’t have much luck. I was only able to find used ones on ebay.

New gauges do not use the resistor.
Also the new gauges are roughly $50

Example of new gauges at LMC -LINK

Also a good video to really help you to diagnose the problem
Diagnose fuel gauge-LINK
 

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