Sam's Club bad gas?

[Yangs]

BUMB its been a while from trying out different gas station from fuel treatment to trouble shooting. i come to a conclusion that petrol have nothing to do with the problem im having and it could be a faulty fuel level sending unit or a faulty fuel indicator. every time when the fuel indicator reads nearly empty and blank rapidly, i fill it up and the pump stops at 8+ gallon. this happens to all the petrol gas station in town. i know the fuel tank hold more than 10 gallon. therefore im assume it could be a faulty fuel level sending unit. what do you guys think? thanks in advance!!!

[CTScott]

Originally Posted by Yangs

BUMB its been a while from trying out different gas station from fuel treatment to trouble shooting. i come to a conclusion that petrol have nothing to do with the problem im having and it could be a faulty fuel level sending unit or a faulty fuel indicator. every time when the fuel indicator reads nearly empty and blank rapidly, i fill it up and the pump stops at 8+ gallon. this happens to all the petrol gas station in town. i know the fuel tank hold more than 10 gallon. therefore im assume it could be a faulty fuel level sending unit. what do you guys think? thanks in advance!!!

That is very possible. The fuel level sender is a resistive device that feeds the instrument cluster. The sender would be the problem, not the cluster's indicator. I have a couple of tested spare one on hand if you are interested.

You can also check it out first with a multimeter. The violet wire in Pin 3 of the larger connector is feed from the sender. If you unplug the connector you can measure the resistance to ground on that wire. You would run it down to the flashing bar and then take measurements on that wire while filling the tank. Chances are that you will find that you have an open section in the resistive strip where the cluster sees that as empty. If you measure while filling you will likely see an open circuit initially and then all of the sudden you will hit a point where it pops to a much lower (and correct) resistance.

[Yangs]

Originally Posted by CTScott

That is very possible. The fuel level sender is a resistive device that feeds the instrument cluster. The sender would be the problem, not the cluster's indicator. I have a couple of tested spare one on hand if you are interested.

You can also check it out first with a multimeter. The violet wire in Pin 3 of the larger connector is feed from the sender. If you unplug the connector you can measure the resistance to ground on that wire. You would run it down to the flashing bar and then take measurements on that wire while filling the tank. Chances are that you will find that you have an open section in the resistive strip where the cluster sees that as empty. If you measure while filling you will likely see an open circuit initially and then all of the sudden you will hit a point where it pops to a much lower (and correct) resistance.

if you have a picture of the resistive strip of the pump assembly i would love to see it. because i would like to be aware how it looks like before i start tearing things apart. if you do i will be really appreciated. thanks for the reply!!!

[CTScott]

Originally Posted by Yangs

if you have a picture of the resistive strip of the pump assembly i would love to see it. because i would like to be aware how it looks like before i start tearing things apart. if you do i will be really appreciated. thanks for the reply!!!

Here's a pic of it: