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Thread: Fuel gauge

  1. #1

    Question Fuel gauge

    I hello all


    my defender 300 tdi 94 have a small problem in the fuel gauge like,
    when i go to a gas station to full my tank the fuel gauge dont reach the top it go only near the last point, how can i fix it any ideas ? thank again

    ps: i don´t have any ligth on the dash board to alert me the tank its nearly the botom, is normal in 94 defender 300 ?

    Best regards

    José

  2. #2
    Links Editor & Moderator Geobloke's Avatar
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    Default Re: Fuel gauge

    Is it a 90 or 110/130 mate?

    The 90 is easier!!
    Cheers, Guy


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    Default Re: Fuel gauge

    Are you filling it just until the pump starts to click? Usually the tank is not full at htis point, but the back pressure from the filter causes the pump to cut out.

    If that is not it, you'll most likely need to replace the sender in the tank - as Geo says, much easier on A SWB than a LWB!

    I don't think you will have a fuel wanring light, my 300tdi didn't. All LR and Rover gauges I have k nown, have tended to read low though. As the fuel goes down, the fuel gauage goes down even faster!

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    Engineer olo's Avatar
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    Default Re: Fuel gauge

    i got exactly the same problem.

    nighthawk has a 300 and he has a low fuel light :|

    how much does a sender cost? and what is it exactly?
    Regards,
    Ed.

    1996 Land Rover Defender TDi 300 - Ex-Fleet

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    Links Editor & Moderator Geobloke's Avatar
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    Default Re: Fuel gauge

    Quote Originally Posted by olo View Post
    i got exactly the same problem.

    nighthawk has a 300 and he has a low fuel light :|

    how much does a sender cost? and what is it exactly?
    About 10 quid and it is a float on the end of a metal arm connected to a variable resistor.

    If you want your guages to read full when the tank is full take the sender out of the tank, bend the metal arm downwards a bit and put it back in the tank. Also whilst the sender is out of the tank you can check it to see if it makes the guage move to the full and empty positions.

    Whilst you are down there check the rubber sealing ring for cracking and replace if necessary, you may also have to replace the locking ring.

    In a 90 this is a 20 minute job max! When I replaced Eva's sender I had to adjust the metal rod a tad so it read full. And that was an LR original part!!
    Cheers, Guy


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    Default Re: Fuel gauge

    wicked! so best thing is to open up check if arm fully extended outwards reads full tank on dash, if it does then all i got to do is bend it right? no need to buy parts straight away or its best just replacing?
    Regards,
    Ed.

    1996 Land Rover Defender TDi 300 - Ex-Fleet

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    Default Re: Fuel gauge

    I have a similar problem, even after I fill up right to the neck, it only reads about 3/4, but it can read 1/4 only a few hundred yards down the road. When it get's to about 1/4 full on the tank it reads OK, and I've got a fuel warning light on my 1990 2.5TD landy, so a later one should have one as well I would have thought.
    James Welsh "STUMPY"
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    Default Re: Fuel gauge

    Fuel warning lihgt is standard on TD5. On 300tdi it was an optiion and depending on local market requirements

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    Default Re: Fuel gauge

    Quote Originally Posted by olo View Post
    wicked! so best thing is to open up check if arm fully extended outwards reads full tank on dash, if it does then all i got to do is bend it right? no need to buy parts straight away or its best just replacing?
    Thats it open it up and take a look, you may not need any parts!
    Cheers, Guy


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    Default Re: Fuel gauge

    I've got an early 110 with a [now working] fuel warning light. The harness used to have an air gap resistor in it.
    AFAIK, if you've got two terminals on your sender then you can power your warning light.

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    Default Re: Fuel gauge

    Hello. My defender 300 doesn't have a warning light, is it possible to fit one?
    Thanks.

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    Default Re: Fuel gauge

    Quote Originally Posted by land94 View Post
    I hello all


    my defender 300 tdi 94 have a small problem in the fuel gauge like,
    when i go to a gas station to full my tank the fuel gauge dont reach the top it go only near the last point, how can i fix it any ideas ? thank again

    ps: i don´t have any ligth on the dash board to alert me the tank its nearly the botom, is normal in 94 defender 300 ?

    Best regards

    José
    Mine just reads permanently full even when I ran out of diesel it was still reading full.
    A curse on CAKE
    1987 90TD hardtop.


    Nolite id cogere, cape malleum majorem







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    Default Re: Fuel gauge

    Quote Originally Posted by vegeta View Post
    Hello. My defender 300 doesn't have a warning light, is it possible to fit one?
    Thanks.
    If you have 2 terminals on your sender (one for guage, one grounded to earth at low fuel) then wire one side of your fuel warning light to +ve and the other side to the (I think red, not sure... meter it out) terminal on the sender.

    Hope this helps

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    Default Re: Fuel gauge

    Quote Originally Posted by olo View Post
    i got exactly the same problem.

    nighthawk has a 300 and he has a low fuel light :|

    how much does a sender cost? and what is it exactly?
    I suspect it *HAD* a fuel warning light. However it was apparently ripped out (possibly for coming on for nothing). I don't have problems with my gauge though. Quite reliable. When it's on the empty mark... it's really empty! (don't ask how I know). It does need to be filled up a lot to mark full though, by continuing to fill even after the pump clicks.
    Lead me not into temptation. I can find it myself

    Dennis

    1995 Defender 90 TDi300 County
    2007 Yamaha Dragstar 1100 Classic

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    Engineer olo's Avatar
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    Default Re: Fuel gauge

    Quote Originally Posted by nighthawk View Post
    I suspect it *HAD* a fuel warning light. However it was apparently ripped out (possibly for coming on for nothing). I don't have problems with my gauge though. Quite reliable. When it's on the empty mark... it's really empty! (don't ask how I know). It does need to be filled up a lot to mark full though, by continuing to fill even after the pump clicks.
    how do you know?
    Regards,
    Ed.

    1996 Land Rover Defender TDi 300 - Ex-Fleet

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