[Oletrucks] 1950 3600 gas gauge

[MIQ MILLMAN]

Simple possible solution:  poor grounding connection on the fuel sending
unit, and the back of the instrument cluster.

slightly less simple:  check the contacts on the resistor board (which if
stock is right there in the cabin fuel tank with you), and check the ohms
on the unit by pulling it out and moving the float.  It should top out
around 90 ohms.

Maybe just replace the fuel sending unit as a whole?  I can't imagine that
it is more than $50.

  --Miq



On Sat, Oct 18, 2025 at 9:57 AM smokey <smokey at railops.com> wrote:

> For 25 years my gas gauge has worked just fine.  Now the needle shakes all
> the time, whether the motor is running or not.  As long as the key is on.
> Any thoughts?
>
> Thanks!
> Smokey Culver, League City, TX
>
>
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