Fuel Gauge Question

[Rubber Truck]

So I found this out the hard way. So my fuel gauge works for my one tank and then when I switch it over to the other tank it says it's full but there is actually no gas in. Any ideas what could be wrong?

 

[Brett77]

Always check the ground on the sending unit at the tank most common.

 

[Rubber Truck]

I put gas in the tank and it works fine it's just that the fuel gauge doesn't work .

 

[Bextreme04]

I put gas in the tank and it works fine it's just that the fuel gauge doesn't work .

Like the previous poster said, check the ground. There should be a blade connector on the sending unit that has a wire running from it to inside of the frame rail to a bolt. Check to make sure the blade is connected and that the wire runs all the way to the bolt on the inside of the frame, then check to make sure the connection at the bolt doesn't have any corrosion issues.

 

[AuroraGirl]

Like the previous poster said, check the ground. There should be a blade connector on the sending unit that has a wire running from it to inside of the frame rail to a bolt. Check to make sure the blade is connected and that the wire runs all the way to the bolt on the inside of the frame, then check to make sure the connection at the bolt doesn't have any corrosion issues.

But don’t you understand that his tank accepts fuel and that his truck runs!? What else is there? (Sarcasm) yes check the nice gentlemen’s suggestion. It’s that ground most often. Mine has a broke wire under the truck and I’m not even positive it was wired right anyway. To the switcher at least.