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Old 12-09-2005, 10:36 AM   #1
sarthak
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Unhappy Ran out of gas - how bad is it? manual says - could damage engine.

I'm feeling slightly sheepish, but i ran out of gas last night.

Unfortunately, the "check engine" and "AT oil temp" lights came up for a fraction of a second before the engine completely cut out.

I read the manual and it states that it could cause misfires and damage the engine. I dont like the idea - but is there a potential that i have damaged the engine? I have barely 5000 kms on the car.

please advise.
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Old 12-09-2005, 10:41 AM   #2
nate.the.great
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it's fine. lol, don't make a habit of it.
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Old 12-09-2005, 10:48 AM   #3
sarthak
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Question I think subaru is lying - 9 lites when the light comes on - NO WAY

The reason why i ran out is partly because i miscalculated.


But i suspect that the fuel level was closer to 4-5 litres when the low fuel level indicator came on. Subaru states that its approx. 9 litres left when the light comes on.

I suspect that - anyone has any experience on this? Not that its something to be proud of. But i feel misled by the manual.

Made me look bad in front of my friends - i was like no problem the car is good for approx. 90 kms when the light came on. I was out of gas by 40 kms.

tragic.....
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Old 12-09-2005, 10:53 AM   #4
i102spd
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no biggie.... now you know and knowing is half the battle (according to GI Joe anyway)... but really im sure you're ok... just as good car care tho you should try not to run it lower than a quarter of a tank... im sure tons of people will tell you they wait till the fuel light comes on and have not had a problem ever, but it's better for the car to not run it low... cant say for sure w/ the suby b/c i havent changed the fuel pump before, but im assuming it sits in the tank and is submerged when you fill up... therefore the gas serves to keep the fuel pump cooler so it'll last longer, and the lower the fuel level is the more risk you run of condensation building up in the tank and having water in the fuel lines... and in the winter it's better to have a full tank for the added weight in snow and slippery conditions
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Old 12-09-2005, 11:52 AM   #5
GrantC
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I was doing some mileage testing w/ my WRX, and for the sake of accuracy i wanted to use most of the tank to make it more accurate. (I also wanted to see what the "fuel light" looked like. )

From this i know that my light comes on when there are ~10L left in the tank. You might want to check your assumptions, or have the gauge checked out by your dealer.
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Old 12-09-2005, 03:47 PM   #6
cheyenneWRX
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Like i102 said its going to hurt your fuel pump if you keep running it out of gas.
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Old 12-09-2005, 03:56 PM   #7
spongejosh
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*note to noobs*

the low fuel light doesn't mean you can still drive 90kms. it means get gas at the next opportunity. as was stated before, it's not good for the car to be run down that low, especially in the winter.

josh
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Old 12-09-2005, 04:17 PM   #8
vintagemilano
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Running out of gas is a major no-no. You are far better off if you are out in the toolies to turn your car off voluntarily than to wait for it to quit on you.
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Old 12-09-2005, 04:20 PM   #9
t3hWIT
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Quote:
Originally Posted by vintagemilano
Running out of gas is a major no-no. You are far better off if you are out in the toolies to turn your car off voluntarily than to wait for it to quit on you.
That the same as the boonies?
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Old 12-09-2005, 04:23 PM   #10
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since you're in toronto canada, you should definitely make the habit of keeping at least 1/4 if not 1/2 of gas tank filled. sub-zero temps up there quite reguarly.
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Old 12-09-2005, 04:38 PM   #11
dmatthew
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Indeedy

I never let my gas run all the way for the light to come out
Always have at least 1/4 tank just in case!
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Old 12-09-2005, 04:40 PM   #12
BoneStockTS
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Ok, so a lot of people say that it can "ruin your cat" if you let your car run out of gas, and misc. other damage. Damaging the fuel pump I can somewhat see, but other than that what's the difference between the engine stopping from not receiving fuel and not receiving a spark?

Just curious -
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Old 12-09-2005, 04:45 PM   #13
nick04263
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Quote:
Originally Posted by dmatthew
Indeedy

I never let my gas run all the way for the light to come out
Always have at least 1/4 tank just in case!
same here
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Old 12-09-2005, 04:57 PM   #14
joehack98
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You won't ruin your cat. You will however damage your fuel pump as the gas keeps it cool. Also you are going to suck up crap, most will get stuck in the sock, and the rest in the fuel filter.
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Old 12-09-2005, 05:04 PM   #15
i102spd
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Quote:
Originally Posted by BoneStockTS
Damaging the fuel pump I can somewhat see
this isnt a somewhat thing... running a low tank regularly will definitely shorten the life of the pump...
cant really see ruining the cat tho, but definitely suck up more crap from the bottom of the tank and have to eventually change the fuel pump sooner as well.. not a big PITA but something that can definitely be avoided and prolonged... the pump is a PITA tho as i dont see any access panels in the trunk like i had in my grand prix so i'm assuming the tank has to be dropped... i may be wrong on this tho so please dont flog me if i am
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Old 12-09-2005, 05:27 PM   #16
BoneStockTS
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Quote:
Originally Posted by joehack98
You won't ruin your cat. You will however damage your fuel pump as the gas keeps it cool. Also you are going to suck up crap, most will get stuck in the sock, and the rest in the fuel filter.
You mean that crap that gets whirled up every time you gas up? That thus gets sucked into the fuel filter regardless?
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Old 12-09-2005, 05:39 PM   #17
spongejosh
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Quote:
Originally Posted by BoneStockTS
what's the difference between the engine stopping from not receiving fuel and not receiving a spark?

Just curious -

not enough gas = fuel starvation which can = lean condition. bad for engine.

no spark = unburned fuel that blows out exhaust and runs into crankcase. (its also bad to have a lot of gas getting into your oil)

josh
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Old 12-09-2005, 08:22 PM   #18
sarthak
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Default What does temp. have to do with it?

Just wondering,

what does sub-zero temps have to do with it?



Quote:
Originally Posted by express_wagon
since you're in toronto canada, you should definitely make the habit of keeping at least 1/4 if not 1/2 of gas tank filled. sub-zero temps up there quite reguarly.
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Old 12-09-2005, 09:43 PM   #19
vintagemilano
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Less surface area in the gas tank for moisture to condensate on. Keeps water out of your gas.
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Old 12-09-2005, 10:22 PM   #20
spongejosh
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Quote:
Originally Posted by vintagemilano
Less surface area in the gas tank for moisture to condensate on. Keeps water out of your gas.

less water = less chance of freezing.

also with such little gas, the more moisture that mixes with it makes your gas.... umm... less gassy i guess.

josh
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