Faulty fuel guage

My 406D fuel gauge only works intermittently, I appreciate that the fault
could be almost anywhere, does anyone have any idea where I should start
to look?

 

the sender unit in the tank has a connector inside it that sometimes
looses connection.

 

On my 406 HDI Y Reg, the needle goes up when full,
after using the diesel it will go down to between half way and empty,so
you think to yourself "its not done much this time" and then when you
start up again the needle goes back to half way. Any ideas?

 

The 2nd build 405 has the same sort of reading problems. Fill up and it
stays at full for ages then very slowly goes down to 3/4. After that it
plunges down the scale to 1/4 and then resumes a slow progress to empty.
Another "feature" is that the needle goes up when desending the slightest
incline and the needle goes down when climbing. Also the needle goes down
very slightly when ignition is "OFF" at all readings of the dial.

I have given up, but anyone have any ideas if this can be fixed? Not a big
problem in any event!!

Rarely run the fuel down to get "Low Fuel" light, but at least that works
ok.

 

The 2nd build 405 has the same sort of reading problems. Fill up and

All the Older Peugeots I’ve come across have something like this, my
205 is only accurate to each 1/4 tank and tends to round up to the
nearest quarter until it starts to empty. I’ve just got used to it,
fact of life with Older Pugs. Unless you’re in danger of running out
of fuel I wouldn’t bother spending time and money trying to fix a
fault that probably doesn’t exist. Once you’ve spent a long time
driving in the car you should get a feel for how long you can drive on
a certain amount of fuel.

Streltsky