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post #1 of 12 (permalink) Old 03-01-2010, 04:39 PM Thread Starter
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Whacky Fuel Gauge?

Alright, the past two days my fuel gauge has been acting up. I just filled up on Friday, and Saturday I go to the Doc's cause I'm sick, and it was reading 3/4 tank but only 9 miles on the trip (I reset the trip every time to keep track of my fuel mileage). Today I start it up to pick up my meds and it was reading below 3/4 tank. I get to the Publix, get back out to the car, fire it up and its back at full...

What could this be? Could I be needing a battery already or is it the Fuel Gauge itself?
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post #2 of 12 (permalink) Old 03-01-2010, 04:40 PM
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sounds like the gauge/pump/ level sender thing (can't think of the name)..lol




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post #3 of 12 (permalink) Old 03-01-2010, 04:53 PM
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I had that problem with my 02 Sunfire when it got below half.
It would jump from a 1\4 to full.
The sending unit had to be replaced.

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post #4 of 12 (permalink) Old 03-01-2010, 05:22 PM
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yea, sounds like the sending unit for the tank. Had a old cavalier that would always say full until it was just about empty, only way I knew I was low was when it went down to the 3/4 mark.

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post #5 of 12 (permalink) Old 03-02-2010, 04:44 AM Thread Starter
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Is the sending unit under the powertrain warranty?
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post #6 of 12 (permalink) Old 03-02-2010, 05:45 AM
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same thing is happening to me. i'll fill my tank alllll the way up till the pump wont let me fill anymore and then the gauge says its at 3/4thish. its the sending unit, got a price quote for mine to get fixed and its about $300 or so i think. not 100% sure
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post #7 of 12 (permalink) Old 03-02-2010, 06:24 AM Thread Starter
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I'm wondering if it is cause of me filling it up to where the fuel is visible in the filler neck when I go on long trips to minimize stopping for gas?
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post #8 of 12 (permalink) Old 03-02-2010, 12:47 PM
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^ hmm, wonder that too. I usually never keep going much after the pump stops. You do not get much more gas compared to the money you shell out to "top off." I would look at seeing if its a warranty thing and if not, see about getting one yourself and just drop your tank when you are close to empty and do it yourself. Not sure how much of a pain it would be on the balt but I did it on my 88 z24.

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post #9 of 12 (permalink) Old 03-03-2010, 10:32 AM Thread Starter
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Funny you mention I don't get much more to top it off... I get on average two gallons more after the thing stops. and on highway trips that is about 80 miles...
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post #10 of 12 (permalink) Old 03-04-2010, 11:00 AM Thread Starter
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Bump...

Got a date with the service department tomorrow at 1pm. Apparently I should have let them know a little sooner, but they service mngr will take care of my mileage thing and make it free to me. since I'm just over the 12k mileage warranty on the replaced recalled part... cause even though the sending unit is part of the fuel module, it is not on the powertrain warranty.
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