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Old 06-14-2003, 09:47 PM   #1
Hazdaz
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Default Is the Low-gas warning light wired with gas gauge?

Just curious if you guys know if the low-gas warning light is wired to the actualy gas-gauge or does it have its own sensor in the tank?

The reason I ask, cuz last year I installed aftermarket guage faces and hit the gas needle by mistake. Now I put it back, and I know its REALLY close, but I have always had a fear in the back of my head that its showing more fuel than there really is. I have never had the light go on, but don't know if thats cuz the lights tied-in with the needle (which I have never let it hit red), or if its cuz I haven't actually gone low enough.
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Old 06-15-2003, 12:53 AM   #2
brunetmj
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It's wired to the gas gauge. It does not have an independant sensor.
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Old 06-17-2003, 09:17 PM   #3
armand1
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It's a little more complicated than that, because there are actually two sensors in the two parts of the gas tank. The computer looks at the recent history of readings from both those sensors to decide when to turn on the low-gas warning light.
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Old 06-17-2003, 09:53 PM   #4
bemani
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I don't think it is wired to the gauge. My gas light came on once, for some strange reason, when I had 1/2 tank left.
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Old 06-17-2003, 10:13 PM   #5
Hazdaz
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Damn.. I hate conflicting info.

Not sure where to ask to get a definitive answer on this... cuz if that light is tired in with the needle, then in my car its probably gonna go on right as the car stops - from lack of gas.
I usually play it safe anyways, but I would like to know exactly how that goes.
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Old 06-17-2003, 10:28 PM   #6
Mulder
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The low fuel light is driven from the CPU in the "combination meter" otherwise known as the instrument panel. The gauge is driven separately from the same CPU. There is no direct connection between the two. The CPU determines fuel level based on input from the fuel level sensors in the tank and outputs the signal to the gauge, and also determines when to turn on the light.
The position of the needle on the gauge is strictly a mechanical thing and will affect nothing except the visual gauge reading.
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