[Roadsters] fuel gauge troubleshooting

[Gary and Cindy Ault]

Krismon,

Get wiring diagram from 311s.org website, then check all connections and 
grounds.  If temperature gauge works, the problem is probably in the wiring 
from the gauge through the sender to ground, or the sender.  You can pull 
the sender via the access panel in the trunk floor and check its operation.

I am told that the standard for the fuel sending unit is 83 ohms +/_ empty 
and 12 ohms +/- Full.  If you do choose to remove the sender, be careful not 
to damage the exposed resistor windings.

I have run the wiring on my fuel gauge from the 12 volt source through the 
gauge to the sender to ground, and haven't been able to get the temp and 
fuel gauges working again.  So, patience.

Gary

----- Original Message ----- 
From: "Krismon ongbongan" <krismon at ongbongan.com>
To: "roadster list" <datsun-roadsters at autox.team.net>
Sent: Thursday, October 13, 2011 7:29 PM
Subject: [Roadsters] fuel gauge troubleshooting


> any tips on troubleshooting the fuel gauge on my '69.
>
> background:
> oil pressure, temp gauge works.. ammeter is unhooked (presumably from a
> motor swap years ago).
> It did "work" when I got the car earlier this year.. a Full tank showed as
> 1/4, now the needle doesn't even move... swapped out a voltage regulator a
> couple of months back (with one from a 510) when the temp gauge & oil
> pressure stopped moving.. but fuel gauge never came back.
> I did have the tank pulled out to be refurbished this past spring, too...
>
> So..now the question.. how do I tell whether it's the sender or the gauge?
> easy way to probe with a multimeter?
>
> Kris.
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