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 Post subject: Eternal full tank (I wish) :?
PostPosted: Thu Nov 04, 2010 9:05 pm 

Joined: Mon Nov 01, 2010 7:56 pm
Posts: 7
Hi all a chronologicaly challenged newb here who is fairly new to chryslers, so am chasing some info please.
My VJ's fuel gauge reads full all of the time, If you disconnect the sender's wire it still stays full if you ground the wire the gauge pointer drops.
Most of my experience has been with holdens and they normally read empty if the sender is disconnected.
Any ideas guys, and can some body please quote me the ohm readings for the sender please. thanks oily.


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sat Nov 06, 2010 8:39 am 
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Joined: Sun Feb 18, 2007 9:25 am
Posts: 1355
Location: Brisbane
Sorry I don't know what the ohms readings should be but is the earth connection from the sender getting a good earth? If so I reckon either the float is not floating or the resistor is stuffed.
You might be able to find a secondhand sender or Elko in Melbourne to a sweet new repoduction.
Cheers,
Mike


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sat Nov 06, 2010 11:07 am 
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Joined: Sun Feb 11, 2007 6:40 pm
Posts: 3729
Location: Brisbane
Someone with a VJ factory manual will be able to tell you the ohms, and you can buy new resistor units to solder in but usually if the resistor is worn out the gauge doesn't work, also the actual gauge can be the problem.


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sat Nov 06, 2010 12:09 pm 
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Joined: Sun Feb 18, 2007 9:25 am
Posts: 1355
Location: Brisbane
ute265III wrote:
Someone with a VJ factory manual will be able to tell you the ohms


Not quite that easy, manual says test with a sender unit of know accuracy


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sat Nov 06, 2010 1:24 pm 

Joined: Mon Oct 29, 2007 10:30 pm
Posts: 762
ute265III wrote:
also the actual gauge can be the problem.


I second that motion, a mate with a VF had a heck of a time sorting out a fuel gauge issue not long ago, he was thinking it had to be the sender unit, but it turned out to be the gauge itself.


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sun Nov 07, 2010 4:18 pm 
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Joined: Sat Jul 28, 2007 10:39 pm
Posts: 1206
Location: Brisbane
Hi

If you earth out the wire to the tank sender and the gauge moves the problem is most likely the tank sender area.

You will need to check that there is a earth strap that sits across the steel fuel line at the tank sender and bridges the rubber fuel line (there is a connection eiter side of the rubber hose, this makes the earth trail for the sender) or it may have an earth wire that connects to the body of the fuel sender back to the body (above the diff).

If one of these are on then you will need to change the tank sender unit. you could emove and replace the eath strap if it there to make sure it has a good earth.

If it dosen't have an earth then it wont work and the gauge will stay full.

HemiRacer


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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Sun Nov 07, 2010 10:02 pm 
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Joined: Tue Mar 20, 2007 9:56 pm
Posts: 610
Location: Brisbane South
What he said.

What your gauge is doing, is correct. Issue is no earth to the tank or sender is cactus.

I'm not sure of the resistance, it might be 0-90 ohms. ie. 0 ohms when empty, 90 ohms when full. (Your holden would have been something opposite like 90-0 ohms. Some are 270-40 ohms, etc.)

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 Post subject: Re: Eternal full tank (I wish) :?
PostPosted: Thu Nov 11, 2010 7:15 am 

Joined: Mon Nov 01, 2010 7:56 pm
Posts: 7
MORNING ALL
Thanks for the info. The earth will be the first place I will try, thanks for the clue on that. oily


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