Fuel gauge is misbehaving in such a strange fashion that it has to be the gauge itself.
Just discovered that the feedback from the sending unit is completely reversed in 1990, from 1989: 1989 has high resistance empty and low resistance full, 1990 has high resistance full and low empty.
I doubt then that an earlier instrument cluster will work correctly.
Please let me know! Just looking for stock; maybe you upgraded yours to a PI and still have it![:-)](https://www.grandmarq.net/vb/core/images/smilies/smile.gif)
Not that I ever go faster than 85mph anyway, so...
Just discovered that the feedback from the sending unit is completely reversed in 1990, from 1989: 1989 has high resistance empty and low resistance full, 1990 has high resistance full and low empty.
I doubt then that an earlier instrument cluster will work correctly.
Please let me know! Just looking for stock; maybe you upgraded yours to a PI and still have it
![:-)](https://www.grandmarq.net/vb/core/images/smilies/smile.gif)
Not that I ever go faster than 85mph anyway, so...
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