2000 Sunfire Horrible gas mileage, and erratic gas gauge - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-28-2008, 01:26 PM
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2000 Sunfire Horrible gas mileage, and erratic gas gauge

I have a 2000 Pontiac Sunfire, it runs great. I noticed that the gas gauge, would always move about in about a one inch radius, would drop and raise erraticly. I put 3/4 of a tank in it yesterday, drove about 75miles, and it had dropped to 1/4 of a tank. I have noticed that it didnt seem to be getting very good gas mileage, but didnt really think anything of it, until this. I just had the fuel pump replaced when I got it, as it was completely out. Any help, would be greatly appreciated. thanks! BTW, it is a 2.2 Automatic.

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Old 07-28-2008, 01:46 PM
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Are you sure your not spewing fuel out on the ground somewhere? Thats terrible for fuel economy.
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Old 07-28-2008, 02:15 PM
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you need to fill it, drive it and see what your millage actually is before you go any further. Could just be a bad gauge or sensor.
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Old 08-06-2008, 11:28 AM
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I checked it, and the car is getting about 25mpg, I know people that have cavaliers, with the same motor and tranny, everything, and they are both getting around 34.
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Old 08-06-2008, 04:13 PM
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Hello Jordan I noticed the 2011 in your screen name? does that mean that you're 16? How do you drive, aggressively or conservatively?

Shane
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Old 08-06-2008, 04:20 PM
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I am 16, And I purchased the car over the summer, I drive it back and forth to work only, I do some interstate driving as well, but I really dont drive aggresively.
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Old 08-06-2008, 07:14 PM
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25mpg sounds pretty good to me.
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Old 08-06-2008, 07:19 PM
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What kind of maintenance have you done? How many miles are on it?

Shane
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Old 08-07-2008, 07:56 AM
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It has 175,000 miles. When I first got the car, the fuel pump was out, so I replaced that, fuel filter, air filter, plugs, & wires.
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