Dakota Digital Fuel Gauge Calibration Question (1 Viewer)

[Green Bean]

What have most of you done to calibrate your DD fuel gauge? As suggested, I set the fuel gauge up based upon the 63 Vette fuel level sensor type. When the tank is full, the gauge only reads 3/4. I'm more worried about the accuracy at the low end. The instructions describe a manual calibration that involves starting with a completely empty tank and adding 1/3 of a tank at a time. Sounds like a PITA. I'd sure be grateful to hear how folks have handled this.
Thanks.
Mark

 

[UZJ40]

I've done it a couple differed ways.

The easiest way is to pull your sender, or buy a spare and use it by hand. You can eyeball the levels very well, but more importantly, empty and full will be exact.

The last fuel gauge I programed (autometer, not DD), I found the full and empty ohm values online. I then bought a resistor kit off Amazon. It had hundreds of resistors in different values, and you can put them in series or parallel to get the exact numbers you need.

 

[Green Bean]

There is a thread here: Help with fuel sender - https://forum.ih8mud.com/threads/help-with-fuel-sender.796077/page-2#post-9078025
that provides ohm values for a 1977. The discussion states:
"Looking at the diagram I would pick:
31% = 60.6 ohm for 1/3 and
69% = 38.8 ohm for 2/3"
Do you happen to know 1) if these would be the same for our 1970; and 2) if I can plug these values into the DD manual calibration set up without draining the tank?
Thanks.

 

[DangerNoodle]

I've also calibrated the sender manually though holding it at rough positions in the tank. It's not perfect, but it is pretty good.