Fuel gauge 605

Hi
I have a peugeot 605 SLI wich is working fine, but i have one problem,
My fuel indicator shows emtpy all the time, and the low fuel warning
lamp is lit. I have checked the sender unit, and it is working. I
meassure the voltage to be around 5 volts, a little less on the lead
going to the dashboard (with full tank of gas). Is this normal? does
anyone have a schematics for this ?

Thanks in advance

Eirik

 

I've got exactly the same problem with my 306 at the moment. Will be
checking the sender unit somewhere in the coming week. Have you tried
measuring the voltage while moving the sender unit, does it change with
change in level? I don't know if the system measures Amperes or Volts, so it
could still be faulty. Maybe anyone else knows?

Bas

 

Hello I also have a fault on the fuel gauge on my Pug 106 reading empty all the time. I have checked the sender on mine by unplugging the wire and measuring the resistance of the sender removed and its ok. Im not familiar with Pug 605 or 306s but on my 106 the two end pins on the sender unit should have a resistance of nearly zero when the tank is full and 290 Ohms when the tank is empty. I guess your sender would have similar resistance but be careful too use the right pins as some cars have the fuel pump on the same plug. Hope that helps and best of luck. Regards