Ok, I just thought of something you can do with the cluster apart. Use your multimeter to check resistance. Check the resistance between the gauge terminals with the gauge not installed on the circuit board. Compare it to the temp gauge.
If you are still unsure, you can swap the two gauges, I think, just to see if you move the problem from fuel to temp. Anyhow, the gauge is seldom open circuit, but it does happen; there's tiny wire inside with fragile connections.

Just be sure it wasn't simply loose nuts.
--
Art Benstein near Baltimore
We can complain because rose bushes have thorns, or rejoice because thorn bushes have roses. -Abraham Lincoln
|