92 incorrect fuel gauge - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-22-2004, 07:16 PM   #1
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Default 92 incorrect fuel gauge

My gauge won't go below full until about 4 gallons have been used, and won't hit half until I have just 6-7 gallons left. It'* been like this as long as I've had the car, and probably since new.

Is this a resistor under the rear seat fix or a new/adjusted sender fix?
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Old 06-23-2004, 12:03 AM   #2
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I believe all of the 92-99 Bonnevilles do that, and I don't think there'* a fix. I think it has to do with the location of the sender and the shape of the gas tank.
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Old 06-23-2004, 01:15 AM   #3
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As soon as I hit the highway mine quit doing it, it doesn't do it when the car isn't under forces. Do we have some sort of recourse to fix it?
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Old 06-23-2004, 01:20 AM   #4
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Mine (9 doesn't do any of that.

I hate to say it, but it sounds like a sticky sensor
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Old 06-23-2004, 11:06 PM   #5
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Quote:
Originally Posted by fuddyduddy121
I believe all of the 92-99 Bonnevilles do that, and I don't think there'* a fix. I think it has to do with the location of the sender and the shape of the gas tank.
i'm with fuddy
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Old 06-23-2004, 11:09 PM   #6
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Non linear calibration through the whole range of the fuel gage from full to empty.
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Old 06-24-2004, 03:24 AM   #7
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I could fix this with a resistor, no? Find the proper resistance to lower the fuel sender output voltage (or raise, I don't know which way it goes).
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Old 06-24-2004, 06:49 PM   #8
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I don't think that would work because you would need to add varying amounts of resistance depending on the gas level in the tank, because it is a non-linear function.
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Old 06-25-2004, 03:25 AM   #9
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Is it possible to adjust the position of the sensor, then?
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Old 06-25-2004, 03:27 AM   #10
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Are we all talking about the same thing? Mine says Full anytime I'm on the brakes... And less than empty when I make her loud....
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