Peugeot 106. 1999 1.1 Zest - FUEL Gauge not working

[Gregg1100]

Fuel gauge not working on above car. I removed plug on top of sender unit on fuel tank and no voltage registered on my meter. I then put a test light to it and no light up. Fuses are ok.
Could be the actual gauge of course. BOL not too helpful- surprise.
Any ideas please??
Thanks
Greg

[citronut]

are you sure its meant to have a +positive at the sender ????,
as it might just be a -negative connection at that end, im not sure just a thought

[Gregg1100]

Cheers Malcolm;
Not got a clue with electrics. I earthed the clip on one end of test light- turned ignition on and touched all four terminals in the sender unit block- not a dicky bird. The tester was checked before hand.
I don't want to start taking dash apart if the fault is at other end. At one time cars either had power going to where it was supposed to go or not. 12v tester light would illuminate if power was there or not, if there wasn't. Easy. Except it isn't now.

[lexi]

I would try for voltage at the fusebox on that fuse. Then check continuity between the fuse and the tank sender With multi meter (ohms).
Then into dash I suppose for a loose feed or faulty gauge. Don't rule out the tank sender unit just yet.

[citronut]

Then check continuity between the fuse and the tank sender With multi meter (ohms).

only with the battery disconnected though!!!!

[Gregg1100]

Fuse for gauges on reversing light and warning lights circuit, and they are all working, so fuse is ok.
That's it- all I can do.
When I took the plug off the sender unit and put a test light on it, with ignition on, I expected bulb to light up(touched all 4 wires). Nothing. I reasonably then thought that fault was elsewhere. I can check a wire only if I can get at both ends with battery and bulb. Resistance is another world. The fact that I know car makers can't even get the same coloured wire to go to a component without changing the colour is beyond me. So how do you check wiring with a BOL, in black and white ??
I have an A5 sized wiring diagram for a Kawasaki GT 550/750 here--all in colour, with the CORRECT coloured wires leading to all the bits on the bike. A doddle to find a fault, with no sign of a multimeter anywhere.

[Gregg1100]

Been watching some Youtube vids on how to measure resistance with multimeter--a steep upward learning curve for me, lol.

[Gregg1100]

After a few day, I got back into the pug.
Disconnected battery- anchored neg lead of tester to a good earth, then touched each of the 4 connectors in sender unit- all readings were at 1.
How do I test the wiring back to gauge without ripping all the sealing tape off and physically putting voltage through each wire with a test light in the circuit. ????
I obviously don't want to remove dash panel if fault is at t'other end. If they had same wire going from tank to gauge, it would be easier, but the french like to change wire colours just for the hell of it and have multi joins in a short length of wire.
Trying to get their own back after Waterloo, perhaps.

[Gregg1100]

Can anyone come back with ideas on how to suss this electrical fault, please ??
Resistance reading on all four pins on sender unit read 1, so I would take it as that was ok and fault is elsewhere. Am I right ??

[citronut]

Can anyone come back with ideas on how to suss this electrical fault, please ??
Resistance reading on all four pins on sender unit read 1, so I would take it as that was ok and fault is elsewhere. Am I right ??

Gregg

have you tried testing with the meter attached and sliding the float up and down, ( obviously out of the tank ),

om no expert using an OHM meter but

it should read all the zero's if you have full on continuity, and the lesser the connection the more numbers/digits should be displayed, ( i stand to be shot at dawn if this info is B*O*L*O*C*K*S )

[Gregg1100]

Not got sender out of tank yet- no point till I can test it with meter. Which I don't understand. I can check for voltage but not all this resistance crap.
Pulled the dash apart to see if any wires were awol- all ok there. Same thing applies- couldn't test it cos of ohms crap. Looking at wiring diagrams in BOL, each wire has other wires running from it, so resistances could be way out.

[myglaren]

Gregg, resistance is deadly simple to test, as easy as voltage.
Ideally use croc clips on the terminals as it's easier to manipulate the float and watch the readout at the same time.

[Gregg1100]

Still can't get the hang of this, so will go the substitute route- a scrappy sender and fuel gauge located. A lot easier.
Out of about 5 or 6 wires in the plug that clips on to the sender unit, why doesn't one show any voltage ??
There has GOT to be some sort of 12v that goes to sender in order for it to work. Why do these pricks of designers need to make things so completely unnecessarily complicated ??

[Gregg1100]

Bought a speedo head from ebay for the pug. Whilst it was from an earlier model-1996, and slightly difference, the fuel gauge was the same and it worked. Which says the sender unit /pump is ok in the tank.
After I had changed the speedo bit to show correct mileage, I hooked the assembly to it's wires and all worked. After 5 mins of checking all the warning lights were ok, the unit suddenly went blank- off- dead.
I checked all the fuses. The F7 fuse which covers the gauges, reversing lights and other bits, is ok, because most of what the fuse covers is working ok.
Are there any in line fuses on these cars????
I think I touched the circuit board onto the steering shaft, it then died on me.
Thanks,
Greg

[citronut]

i fear you might have popped the flexi print at some point