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How does a fuel sending unit work? 700 1991

posted by  chuffsy on  Sun Sep 30 09:39 CST 2012
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last visit: Tue Oct 21 18:17 CST 2014
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1991 740 non turbo , regina . This is why I am asking. Many years ago I replaced my instrument cluster and since then my fuel gauge reads backwards. The replacement was from another year. I recently removed the entire fuel pump/sending unit for a pump repair. My sending unit is not compressible like others. I can hear something sliding up and down in the tubed chamber and I gather this must be a kind of "float" for the fuel quantity. There are two wires to the sending unit . The entire assembly , pump and sending unit ,has four wires and two are for the fuel pump , two for the sending unit.Could I desolder the wires from the sending unit and reverse them so the gas gauge in the cluster read true? Thoughts?
: Or perhaps reverse the wires at the connector located behind the carpet near the radio antenna in trunk.






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