No low fuel light... - Page 2
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This is a discussion on No low fuel light... within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; The whole point of filling up at a 1/4 of a tank is being missed completely.Gasoline has very good thermal ...

  1. #16
    Moderator Donkey's Avatar
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    The whole point of filling up at a 1/4 of a tank is being missed completely.Gasoline has very good thermal properites.The point of filling up at 1/4 of a tank is that the fuel pump is still somewhat submerged.The gasoline acts as a heatsink keeping the pump from burning up.Your a moron if you constantly run your tank down to empty.....
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  3. #17
    Registered User TRM1305's Avatar
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    ^^^Maybe this is why in the 08's the light does come on at a 1/4 of a tank. In all my previous cars I've ran my needle down to E. With my Rex I find that I fill up a little about the 1/4 line to prevent the light from coming on which I guess is a good thing. Although I never had a any fuel pump problems in previous cars.
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  4. #18
    Administrator Trainrex's Avatar
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    Quote Originally Posted by Donkey View Post
    The whole point of filling up at a 1/4 of a tank is being missed completely.Gasoline has very good thermal properites.The point of filling up at 1/4 of a tank is that the fuel pump is still somewhat submerged.The gasoline acts as a heatsink keeping the pump from burning up.Your a moron if you constantly run your tank down to empty.....
    I must be a moron.

    I've consistently run cars down to empty for over 200k miles for over a decade and I've only ever had one fuel pump fail right at 200k miles. A fuel pump only needs fuel flowing through it to cool, not around it. If this were the case, manufacturers would set the empty mark on a fuel gauge at about 1/4 tank.

    This thread is full of old wives tales, and it's actually getting amusing at this point.

  5. #19
    Registered User SuBiEklD's Avatar
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    i've actually never passed the E. my fuel warning light comes on a little before i hit the last mark where the E is.
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  6. #20
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    SuBiEklD does your light come on when you start your car as well?
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  7. #21
    Registered User SuBiEklD's Avatar
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    i'm pretty sure it comes on. so does every other light (check engine, oil, awd etc.)
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  8. #22
    Moderator Donkey's Avatar
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    Quote Originally Posted by Trainrex View Post
    I must be a moron.

    I've consistently run cars down to empty for over 200k miles for over a decade and I've only ever had one fuel pump fail right at 200k miles. A fuel pump only needs fuel flowing through it to cool, not around it. If this were the case, manufacturers would set the empty mark on a fuel gauge at about 1/4 tank.

    This thread is full of old wives tales, and it's actually getting amusing at this point.
    Fuel around the pump will cool it much,much quicker than fuel going through it.Not to mention the fact that your return line is bringing back heated fuel from the engine compartment.That fuel need to be cooled as well.It needs both fuel going through it and around it.I guess it's a pretty popular wives tale.There is a thousand of these..
    http://www.nicoclub.com/articles.php?id=251205
    http://www.autoblog.com/2006/08/03/a...el-pump-randr/
    http://www.aa1car.com/library/fuel_pump.htm
    http://www.familycar.com/Classroom/dashboard.htm
    Last edited by Donkey; 03-02-2008 at 06:06 AM.
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  9. #23
    Administrator Trainrex's Avatar
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    Quote Originally Posted by Donkey View Post
    Fuel around the pump will cool it much,much quicker than fuel going through it.Not to mention the fact that your return line is bringing back heated fuel from the engine compartment.That fuel need to be cooled as well.It needs both fuel going through it and around it.I guess it's a pretty popular wives tale.There is a thousand of these..
    http://www.nicoclub.com/articles.php?id=251205
    http://www.autoblog.com/2006/08/03/a...el-pump-randr/
    http://www.aa1car.com/library/fuel_pump.htm
    http://www.familycar.com/Classroom/dashboard.htm
    That's what makes them old wives tales.

    I use my real world experiences from the last 14 years driving and working on cars for a living.

    Next time forget the old wives tales and be careful who you call a moron.

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