fuel gauge

[jbozzuto]

I have a 2002 Gulfstream 232 with two Honda 130 engines. Fuel gauge reads empty for both main and auxiliary tanks. I know the main tank is full. Any suggestions on trouble shooting?

 

[SkunkBoat]

check that the tanks are still connected to negative bus.

 

[seasick]

At the sender, look for the pink wire. Unplug it from the sender terminal. The gauge should read empty. Now touch/connect the pink wire to a good ground connection. The gauge should read full.
If it does, you have a bad sender or a bad ground, either the ground connection from the sender to the tank, or the connection from the system ground to the tank itself.
One other thing: Is there a switch to select which tank is connected to the gauge ( one gauge for both tanks)?

 

[jbozzuto]

At the sender, look for the pink wire. Unplug it from the sender terminal. The gauge should read empty. Now touch/connect the pink wire to a good ground connection. The gauge should read full.
If it does, you have a bad sender or a bad ground, either the ground connection from the sender to the tank, or the connection from the system ground to the tank itself.
One other thing: Is there a switch to select which tank is connected to the gauge ( one gauge for both tanks)?

There is a switch to select the tank. One gauge for both tanks. Thanks for the reply.

 

[oasis04]

I am having very similar issues
I have been filling tanks then keeping up with fuel used gauge.

 

[DennisG01]

Did both gauges stop working at the same time?