Suzuki C10 Gauge Fuel Sender Issue

[whoisjango]

I have a quick question. The fuel reading on my Suzuki P 53.5.jpg35.7.jpg17.8.jpg ort C10 gauge fluctuates every few seconds between 3 different fuel level readings, 17.8, 25.6, and 53.5. Do you know if that means I have a bad fuel sensor or what else could that be? Maybe it's not set up correctly? Boat is 6 months old.

[Moonlighter]

The fuel figure that is presented as a % is drawn from the fuel tank sender unit and is always going to be jumping around as the fuel sloshes around in the tank.

If the gal figure is jumping around, that is strange because it is coming from the engine interface, and should be stable.

I would check that the network backbone is set up correctly. Must look like this:

Terminating resistor - T - T - T - T - Terminating resistor.

eg there must be a TR at each end of the line of T’s. All devices and power must be connected to the legs of the T’s, never to the side.

I would then check the configuration of the interfaces. Make sure the interface cables are running version 3.5.7 software, you can see it listed in the configuration screen. If its nit, get the dealer to install the correct cables.

If you cant fund anything wrong there, get the dealer to look at it and fix it, a 6 month old boat shouldn’t have such problems.

[whoisjango]

Thank you. All my other information works fine. I will check my software versions. I know one of my C10 was replaced last month. If it has a different software version would that create issues?

[Moonlighter]

Software conflicts are never a good idea. Whether they are a cause of this issue, who knows??