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Low gas indicator

Why is it that after it says 30km remaining the counter just goes away and displays "---" ? Shouldn't it keep counting to at least 5km left before it can't

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Old 11-26-2012, 05:35 PM   #1 (permalink)
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Default Low gas indicator

Why is it that after it says 30km remaining the counter just goes away and displays "---" ?

Shouldn't it keep counting to at least 5km left before it can't tell how far you can go? Is it just my car or do you guys get it to read further?
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Old 11-26-2012, 05:38 PM   #2 (permalink)
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My guess is they've coded it that way to freak people out so they hit the gas station asap.
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Old 11-26-2012, 05:40 PM   #3 (permalink)
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Mine does the same thing (except for the metric part). I think it is Nissan's way of getting people to fill up before running the tank dry. Dare I say, lawyers could have something to do with it as well --> I don't think it's far-fetched if they were concerned about potential lawsuits where people ran out of gas even though the DTE showed 1 mile left (or 1km for our northern neighbors).

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Old 11-26-2012, 05:56 PM   #4 (permalink)
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Running low fuel messes up your cats fyi.
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Old 11-26-2012, 05:58 PM   #5 (permalink)
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Same with mine. I can start a trip and the gauge says "45 Miles" til empty. I drive 5 miles and it flashes "---". It bugs me.
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Old 11-26-2012, 06:00 PM   #6 (permalink)
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Running low fuel messes up your cats fyi.
Plus your fuel pump.
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Old 11-26-2012, 06:23 PM   #7 (permalink)
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Thanks for the info guys.
I was actually on the way to fill up at a gas station of choice. Just noticed this twice now and figured I'd ask.
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Old 11-26-2012, 06:47 PM   #8 (permalink)
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I hate that because I'm only getting 12-14mpg so every freaking last mile counts
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Old 11-27-2012, 12:09 AM   #9 (permalink)
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Originally Posted by 1st View Post
Running low fuel messes up your cats fyi.
Can you explain that one?

Quote:
Originally Posted by SPOHN View Post
Plus your fuel pump.
This It's not good to suck up all the sentiment on the bottom of the tank
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Old 11-27-2012, 12:45 AM   #10 (permalink)
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Damage by sediments is actually one of those urban automotive myths. The pump sits at the bottom of the tank regardless and has protective screens to prevent any of that stuff from damaging the Engine. This might have been more valid in the past, but newer gas tanks are less prone to corrosion. You also have a fuel filter. Where it could cause damage to the pump is because running completely out of gas prevents lubrication to the pump and causes it to fail prematurely.
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Old 11-27-2012, 07:54 AM   #11 (permalink)
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I wonder if the accuracy (or lack thereof) has changed with the 2013 models?

Not sure I'm going to be a fan of the digital fuel gauge. I like knowing I'm able to take mine down to when it's flashing (~1g remaining) and knowing I can get another 10mi if I need to.
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Old 11-27-2012, 07:56 AM   #12 (permalink)
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Quote:
Originally Posted by 1st View Post
Running low fuel messes up your cats fyi.
false. that doesn't even begin to make sense...
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Old 11-27-2012, 08:32 AM   #13 (permalink)
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Quote:
Originally Posted by SPOHN View Post
Plus your fuel pump.
That was true with older tanks that had an articulated pickup arm, but the pump inlet now stays at the bottom of the tank and most moisture/trash gets ingested a little at a time. Plus, the ethanol in most gas will help keep the tank dry and clean(er). If you have enough water/trash in the bottom of the tank in a 370Z to cause problems when fuel is low, there are other problems you need to take care of.
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Old 11-27-2012, 08:34 AM   #14 (permalink)
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Quote:
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Running low fuel messes up your cats fyi.
That's a new one on me. Please elaborate.
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Old 11-27-2012, 08:58 AM   #15 (permalink)
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Originally Posted by SouthArk370Z View Post
That's a new one on me. Please elaborate.
I think their is some truth to that one, but I think you would have to repeatedly run out of gas on a normal basis to cause enough damage. I think it has something to do with thermal failure of the ceramics within the catalytic converter. Its a similar effect of a malfunctioning O2 sensor, misfire or an ECU malfunction....pretty much anything that causes unburnt fuel to enter the cats and ignite...super heating the ceramics beyond operating temps. It's unlikely running out of gas once would be enough to cause that much damage, but its best to err on the side of caution.
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Last edited by Cmike2780; 11-27-2012 at 03:07 PM.
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