1984 300D fuel gauge - ideas anyone?

External Since: Sep 19, 2006 Posts: 2

My fuel gauge always reads empty, and the reserve light is on. Here is
what I have tried:
1. Filled tank
2. Removed and disassembled sending uint. All looks good: wires intact,
contacts good, float moves freely, everything is clean.
3. Swapped another fuel gauge into cluster. Same zero reading.

Is there any kind of control unit between the sender and the gauge? Am
I down to the only possibility being a wire issue? Any other ways to
check?

Thanks again for all the free advice

Michael

External Since: Sep 19, 2006 Posts: 2

Karl wrote:
> The needle and the light are on two seperate circuits.
> If the light is on, the float is sitting on the bottom. The float has two contacts on the bottom of
> it. It has to sit on the bottom to turn the light on.
>
> Unscrew the float tube out of the tank. Plug it back in. Turn the key on. Turn the tube bottom up so
> the float moves. Light should go out and the needle should move.
>

I did this when I had the sending unit out. When the float is on the
bottom the gauge shows full. When the float is in any other position
the gauge shows empty