EJ fuel sender

[KRU5IN]

Can anyone tell me what the voltage ohms is for a ej fuel sender.
just that i have a modified tank and someone has put a aftermarket sender in and its not compatable with the gauge

[KRU5IN]

Anyone ??

[Trev]

Keen to know also.

[KRU5IN]

Can anyone help ??

[Thommo]

Have a look through here, Itmay help, http://oldholden.com/node/59999
I just did a quick google search using your key words, that was one of many that came up.
What is it you are trying to do?

[KRU5IN]

BUMP
need to the know the correct sender ohms so i can run a after market fuel sender

[KRU5IN]

I can't belive no one knows? ive even rang around and everyone just says "HMM not sure mate"
someone must know ???

[Harv]

Krusin,

Option 1: Rare Spares does a replacement unit (part number SU1003N) for around $120.
Option 2: If you are friendly with your local Rares branch, they may let you run an ohms meter over one of the above units.
Option 3: Buy a rheostat from JayCar, and wire it in line with your existing gauge. Run 12V through it whilst adjusting the rheostat. Measure the rheostat resistance at "empty" and "full".
Option 3: If the gauge reads too high (not enough resistance in the aftermarket sender) you can probably wire a resistor in series.

Cheers,
Harv

[KRU5IN]

Thanks HARV,
mate how do you wire in a resister ??

[Harv]

Gotta admit I havn't wired in a resistor, but here is an educated guess:

The fuel sender unit is really just a big, clunky rheostat (variable resistor). Power is fed to the gauge in the dash, and then from there to the sender unit. By moving the float arm up and down, the resistance of the sender varies, allowing less or more current to flow to earth. If the sender has too much resistance (too many ohms), not enough current flows to the gauge, and it will not read (or will read low). If the sender has too little resistance (too few ohms), then too much current flows to the gauge, and it will read too high (or off scale). If a resistor is wired into the line between the gauge and sender, it will increase the effective resistance of the gauge, making it read lower.

Cheers,
Harv.

[KRU5IN]

"I HATE CARS "