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Re: Bad Fuel Sending Unit?
It sounds like it could be the sending unit but if the wire is broken you will have the same results. If you have an ohm meter check the reading of the sender between the pin and the tank. It should read between 0 ohms and 90 ohms. (In your case 3/4 of a tank would translate to approximately 68 ohms).
If you get a high reading then the tank unit will need to be replaced.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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