Does this sound about right for a fuel level sender?

[davepl]

When brown wire is grounded I get a reading of about 1/8 tank UNDER empty.
When brown wire is connected to close-to-empty tank sender, reads -just- under empty.
When brown wire is disconnect from everything it goes to about 3 o'clock (1/2 tank past full)

I hooked it up to 100 ohm resistor (no combos to make a 90) and it read about 1/8 tank OVER full.

With two 47s (84 ohms) however it still reads that same amount (1/8 overfull).

10 ohms puts me just over empty.

So it seems I have about a 5-75 ohm range from empty to full. Is this typical or should I expect the gauge to be more accurate? If it were perfect 0 would be empty and 90 ohms would be full, but its not quite like that.

[luvbowties]

When u think about it, 5-75 comes closest to 0-90 of any range we hear about. Also, most gauges, when tank is filled, read above "Full". I'd guess your gauge is about as accurate as could be expected.

The variable resistor in your sender may be more nearly accurate than the 2@47's and the 1@100 u used[or less nearly accurate?]. Also, the sender could've worn over time for it to be so much off.

Personally, I'd not spend the ~$50 to chance helping the matter--but it may bug u enough to gamble--your call, of course! Sender cost would be about all the expense since not very much labor is involved.
Sam