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Old 03-19-2008, 10:42 AM   #1
06AWD
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Default Gas light comes on too soon

It has happened twice now. The gas light comes on when there is still about 1/8 of a tank left (according to the gas guage). I consistantly get the same gas mileage since I drive mostly highways, and according to my odometer, there is still a good deal of gas left in the tank when the gas light comes on. Any thoughts on what could be causing this? Car is 2006 WRX Tr, 45K miles, stock. Thanks.
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Old 03-19-2008, 12:17 PM   #2
Jim2752
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I had this same problem with my jeep. When you get gas do you fill up your tank or only put in a few gallons? I have no idea if this will work for your car but the solution for my jeep was a trip to Florida. After going through a couple tanks of gas the gauge started working right.
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Old 03-19-2008, 12:39 PM   #3
06AWD
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Always drive it til it's empty, then fill it.
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Old 03-19-2008, 01:28 PM   #4
a6n6d6y
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how much does it take to fill it after the light comes on ?
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Old 03-19-2008, 01:32 PM   #5
06AWD
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Not sure since it's only happened twice, but I see what you're getting at. If it take a full tank even though it's not showing "empty", something is screwed up. But any idea as so what would be causing this? Is something lose? broken?
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Old 03-19-2008, 02:29 PM   #6
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I remember this happened to me once. The light was on much earlier than normal, I filled the tank and went on my way. Hasn't happened since.
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Old 03-19-2008, 02:41 PM   #7
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We have low gas level idiot lights?



My tank is never less than 1/4...never seen this light come on.
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Old 03-19-2008, 02:43 PM   #8
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My light comes on where there is about 4 gallons left.
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Old 03-19-2008, 02:43 PM   #9
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sometimes mine comes on at a 1/4 then goes back off. I rarely let it get that low though.
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Old 03-19-2008, 03:16 PM   #10
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Quote:
Originally Posted by WRXLTD View Post
We have low gas level idiot lights?



My tank is never less than 1/4...never seen this light come on.
+11111
you should NEVER let it get past a 1/4 tank
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Old 03-19-2008, 03:38 PM   #11
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Quote:
Originally Posted by MOBBiN View Post
+11111
you should NEVER let it get past a 1/4 tank
Well, why don't they just make the tank 1/4 bigger?
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Old 03-19-2008, 03:53 PM   #12
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letting gas tank fall below 1/4 = shorter fuel pump life = teh suck.

fill it up sooner.
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Old 03-19-2008, 04:01 PM   #13
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I've heard that as well...I'm sure I really shouldn't be running mine down to the light with a Walbro every tank. I just like the feeling of getting a fresh full tank of gas LOL.

I think even subaru says not to get into boost once the gas light comes on, so I'm sure we shouldn't be running it that low. I'm actually suprised I haven't had any fueling problems with a near empty tank and a walbro. My best friends drag car runs a GSS342 and runs into major fuel pressure problems below 1/4 tank.
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Old 03-19-2008, 04:17 PM   #14
my scoop eats babies
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I think this is pretty normal. For my car, the gas light will come on if I start the car with 1/4 tank or even a little more. It will stay on for 2 minutes, then shut off until it's down to just above empty, then it comes on and stays on.
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Old 03-19-2008, 04:22 PM   #15
06AWD
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So I guess the conclusions here are that:

1. I shouldn't worry about it. It will go away.
2. I should get gas before the light comes on.

It reminds me of when I was a little kid. I would fall and scrape my knees. Later, I would hit them on something by accident and say, "Ouch, that hurts." And my parent's would say, "Well if that hurts, don't do it."

So I guess I could hope it goes away or never let the tank get below 1/4 tank, but the problem would still exist.
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Old 03-19-2008, 04:23 PM   #16
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Quote:
Originally Posted by my scoop eats babies View Post
I think this is pretty normal. For my car, the gas light will come on if I start the car with 1/4 tank or even a little more. It will stay on for 2 minutes, then shut off until it's down to just above empty, then it comes on and stays on.
What year is your car?
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Old 03-19-2008, 04:52 PM   #17
my scoop eats babies
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Quote:
Originally Posted by 06AWD View Post
What year is your car?
It's an 02.
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Old 03-19-2008, 05:34 PM   #18
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I've had this issue too. I thought nothing of it until the gas light came on with a full tank and the car threw a cel. bad fuel sending unit. the dealer said its a pretty common occurance.
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Old 03-19-2008, 05:42 PM   #19
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^^^ And what was the resolution?
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Old 03-19-2008, 05:50 PM   #20
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Isn't the Gas light supposed to come on with around 2 gallons left in the tank?

If the gas tank is 15.9 gallons, then 1/8 remaining would be 2 gallons right?

I'm not trying to be a jerk - I hope that's the case and nothing is wrong with your car!
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Old 03-19-2008, 08:03 PM   #21
06AWD
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Yes, you are right, in fact. 2 gallons is 1/8th of 15.9. Just wondering why this would be the first time it would have come on since I bought it in November of 2005.
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Old 03-20-2008, 12:04 AM   #22
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Quote:
Originally Posted by 06AWD View Post
^^^ And what was the resolution?
they had to replace the fuel sending unit... they did so under warranty. they said it would have been around $400 had it not been covered.
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Old 03-20-2008, 08:51 AM   #23
06AWD
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Would not replacing the fuel sending unit lead to additional issues? Or is it more of an inconvienence, as in having the gas light come on too soon?
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