67-72 Chevy Truck fuel gauge diagnostics 101

[67 Burb]

The resistance across the gauge (as shown in the first picture in your post #2) must vary a lot. I checked that resistance on a gauge I have and found it to be 31 Ohms. And the gauge checks out OK.

[TBONE1964]

Originally Posted by 67 Burb

The resistance across the gauge (as shown in the first picture in your post #2) must vary a lot. I checked that resistance on a gauge I have and found it to be 31 Ohms. And the gauge checks out OK.

I cannot do it for a while yet but I have 20 + fuel gauges that all work. I can do this ohm test on them and see what kind of variation there is. I also have a NOS fuel gauge to test.

Good point you have made. I am curious to see what others might be.

Take care,
Tom