It will perk up and show 1/4 tank briefly when it likely has 1/4 tank left.
Fuel pump is working.
If it is the original fuel pump then it is possible that the sending unit has gone bad or the electrical connection to it is intermittent.
Sadly, to see the connections at the tank you have to drop the tank. However, once dropped, there are like 3 terminals so it is trivial to remove the nuts, clean the terminals, and replace the nuts.
We likely need to have the fuel pump replaced to get the gas gauge working.
It may be a challenge to get the correct pump.
As above, you may or may not have to replace the pump. If it is the original pump, and since you're going to the trouble to drop the tank anyway, replacing the pump might be a good idea anyway.
The problem could also be with the gauge itself. Which is a problem, since it is integral with the rest of the gauges in the console. It cannot be independently replaced. If your gauge itself is shot, your only real option is an aftermarket fuel gauge mounted somewhere.
All I would say is if you replace the pump, get it in writing the part number of the pump that is being replaced and that it matches the VIN of your chassis. If your gas gauge runs backwards, you've got the wrong pump!
Our RV is 25 years old and we plan to keep it for 4-5 more years. Someone above commented on lots of rust.
Should we look at having the fuel tank replaced at the same time? Or leave it alone and just have the pump replaced?
You'd have to inspect it and see what it looks like outside and inside the tank.
Steve
