fuel gauge has 5.6 volts but shows empty when in vehicle outside w/ 4.5v show 3/4 ful

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stealth1291

New Member
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3
i have a 1998 defender 110 and the fuel gauge doesnt work.
i took the gauge out and tested for voltage and it reads 5.65V but the gauge reads empty when connected
outside of the car i hooked it up to 3 1.5V batteries (4.5V) and the gauge read almost 3/4 full
from what i have read online the gauge runs on 10V so 4.5 should really only be 1/2 full.
I dont want to drop the gas tank to play with the float if i do not have to. any help would be greatly appreciated
 
Have you run new wiring from tank to gauge while it was out ?

Sounds like you have an earth short somewhere ...
 
Similar to mine, I had two faults:
1. Chafed loom, through the earth
2. Disconnected earth on the loom as it exits the chassis at the front (two wires come off the loom at that point and connect to the chassis with bullet connectors).

Good luck.
 
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