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Old 06-22-2017, 03:20 PM   #79
RWHSVAR
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Join Date: May 2017
Location: Hot Springs Village, AR
Posts: 3
Re: 67-72 Chevy Truck fuel gauge diagnostics 101

This is great information. I have been fighting with the fuel gauge on my 72 C10 for 2 months and getting nowhere. I replaced the tank sending unit which did not help. I just did the diagnostics in your post and got the following readings.

Picture 1 - 44.4 ohms I read 23.4 ohms
Picture 2 - 98.2 ohms I read 23.3 ohms
Picture 3 - 142.8 ohms I read 2.2 ohms

My best guess is a bad resistor. Do you agree? If so, where can I buy a new resistor. If I'm wrong, please advise next steps.

Thanks so much.
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