think my fuel sensor is buggered

flash42

Active Member

Posts

739

Location

moretonhampstead, devon

• Jul 28, 2008

• #1

every time i fill the defender up, i fill it to the brim so i can see the fuel, but it still only registers 3/4 or less when full to the brim.
its really bugs me, as it doesnt give me an accurate reading of how much fuel i actually have left.
can anyone instruct me on how to make it accurate.

cheers

flash

 

big ad

Active Member

Posts

907

Location

Barnstaple , Devon

• Jul 28, 2008

• #2

i had the same problem but in reverse, it said it was full when it has only 1/4 so i just bought a new sender and bobs you uncle.

 

wiltshire landyman

I’m back

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15,062

Location

salisbury plain wiltshire

• Jul 28, 2008

• #3

like big ad said new sensor,or take out drivers seat and underneath is the tank with the sendor unit in the top of it,there are 3 connectors on it,try cleaning all connectors and plugs with wd40 and a bit of emery paper if that dont work then its defo the sendor unit.dont know if this applys to td5s tho but it did on my 2.5td..

 

flash42

Active Member

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739

Location

moretonhampstead, devon

• Jul 28, 2008

• #4

kk, is it possible to check how much fuel there is in the tank manually?

 

Oddie

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26,178

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In a puddle in Kernow

• Jul 29, 2008

• #5

Look in the hole the sender comes out of! You will probably find the fuel-empty light is still relatively accurate.

 

flash42

Active Member

Posts

739

Location

moretonhampstead, devon

• Jul 29, 2008

• #6

ligth? who said anything about having a light
all i have is a red block

 

Oddie

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26,178

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In a puddle in Kernow

• Jul 29, 2008

• #7

flash42 said:

ligth? who said anything about having a light
all i have is a red block

Click to expand...

Well when the red block stops moving you've run out of fuel.

 

flash42

Active Member

Posts

739

Location

moretonhampstead, devon

• Jul 29, 2008

• #8

i meant a red part on the fuel gauge. think im gonna go take it out and have a butchers in the tank

 

david451

New Member

Posts

1,955

Location

scotland

• Jul 29, 2008

• #9

flash42 said:

i meant a red part on the fuel gauge. think im gonna go take it out and have a butchers in the tank

Click to expand...

When you take it out make sure the float aint got fuel in it, and look at where the little arm runs up the resistor which is just a wire wound around the bit the arm runs on. might find at bits it aint making a connection.

If you connect it to the power move it manually and check it against the guage, might have to earth the thing to body to get it to work tho.

On some of them a liitle bend of the arm with the float is all thats needed to get it calibrated. But make sure it registers empty accuratly afterwards.