Hello, and Thank You for using Just Answer.
The fuse you are looking for is actually mounted on the combined instrument assembly, top/back side. I personally have never looked for it before now, but the wiring diagram shows it there. The problem is that it feeds all of the gauges and lights in the cluster. If the fuel gauge is the only one affected, I would target an actual sending unit fault, rather than the instrument cluster. It's not uncommon for cars of that age to have corroded wiring going into the sending unit. This would require replacing the sending unit (level sensor). The harness connector for the pump/sensor is located behind the left cargo/trunk panel. You should be able to separate the connector, and check resistance through the sensor. If it's open, fault found. The diagram shows a brown wire, and a black/white wire leading to the sensor. If this doesn't help, let me know of any other specific faults and/or diagnostics already done.
Thank you in advance for clicking "Accept". Positive feedback and Bonus are very much welcomed! Thanks again, Bill
The fuse is shown on the back of the cluster, top, left area (with the back side towards you). Again, if other gauges work (clock excluded), and warning lights come on when the ignition is turned on, the fuse is fine. It feeds all of them. A resistance check of the sending unit is needed. Isolate the unit, like I said before, disconnecting it in the cargo area. Check the resistance through the unit (ck above for wire colors). The voltage and current through the sending unit is very minimal. Honestly, I'm not sure what kind of voltages one would see; it's never come up, so to speak. If you really want to be sure, jump a 100 ohm resistor across the harness terminals leading to the sending unit, and see what happens at the gauge.
Let me know how you make out.. Bill
I personally have never looked for this fuse, so I'm not sure what it would look like. It is shown on the upper left area of the circuit board with the board facing you. The problem, like I said though, is that fuse feeds all gauges and lighting in the cluster. If the sending unit is indeed new, working OK, I would next check resistance through the sending unit right from the cluster harness. This value should match within a few ohms of a reading taken right at the sending unit. If wiring to and from the sender are OK, then the gauge itself, or a circuit board on the cluster are at fault. Try looking closely at the board on the cluster for loose solder connections. These can be tricky to find. A magnifying glass would help with this.
Let me know how you make out, Bill