Inaccurate Gas Gauge. - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 15 (permalink) Old 09-07-2010, 09:07 AM Thread Starter
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Inaccurate Gas Gauge.

My gas gauge seems wildly pessimistic. Any fix?

Also, where the odometer usually is there's an info display.

It includes miles left in the tank.

Is it any more or less accurate than the analog gas gauge?

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post #2 of 15 (permalink) Old 09-07-2010, 12:16 PM
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no clue on the first unless you can get it covered under warranty. in terms of the digital, if you plan on maintaining the current rate of mpg's you've been running for a bit, it's mostly reliable IMO.

but if you were on the highway and it says 100 miles till empty, and you start racing or something lol, than of course it would be a different story

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post #3 of 15 (permalink) Old 09-07-2010, 04:51 PM
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Exactly what stickx said. The miles left to go works off your recent driving habits. If you change those habits it will be off one way or the other.

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post #4 of 15 (permalink) Old 09-07-2010, 05:35 PM
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Better to have a very pessimistic gauge than an optimistic one. Trust me.

I'd rather think I'm on fumes and have a few gallons left than to think I have a quarter tank and then run out of gas (Trust me, I've had it happen with my old Grand Am).


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post #5 of 15 (permalink) Old 09-07-2010, 08:04 PM
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Seems there was a TSB on this fuel gauge issue. Affected the earlier models. Don't know what year he has.

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post #6 of 15 (permalink) Old 09-09-2010, 07:13 AM
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If I want to know if I’ll make it somewhere, I always go by the DIC, not the gauge. The gauge always seems to drop faster than expected after it hits tank.
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post #7 of 15 (permalink) Old 09-15-2010, 06:54 PM
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Gas gauges always seem to sit on full for a long time then drop after you hit 1/2 full. The other thing I noticed is the fuel range goes to low when you have 50 to empty. I think it should keep telling what you have to go.

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post #8 of 15 (permalink) Old 09-16-2010, 08:32 AM
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It's doing that in an attempt to get you to fuel up quicker. It's very hard hard on a fuel pump to keep running the tank to empty like that. Every once in awhile is ok to keep the crap out of the tank, but if you are constantly running it down like that you will end up replacing your fuel pump.

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post #9 of 15 (permalink) Old 09-16-2010, 12:38 PM
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^Why, because the pump has to lift the fuel up a few more inches?
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post #10 of 15 (permalink) Old 09-16-2010, 12:57 PM
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