91 SSE Fuel Gauge Problem - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-25-2004, 03:24 AM   #1
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Default 91 SSE Fuel Gauge Problem

i recently bought a 91 SSE and recieved it with 1/4 tank left. After i filled it up and took it for a spin i noticed it read about 1/4 of the tank was gone, i was not happy, but then it went back to full so i disregarded it. but now it keeps flucuating between almost full and half full so i really need to know which it is so i don't get stuck with no gas. have any of you experienced this and what did you do about it? if you haven't experienced it what would you suggest the problem is? any help would be grately appreciated
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Old 08-25-2004, 07:07 AM   #2
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I had the same problem w/ my 91 SSE. But mine occured after the gas tank was replaced.
Do you know if the gas tank has been replaced or not?
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Old 08-25-2004, 12:55 PM   #3
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no the tank has never been replaced. how did you get around it? because this is my daily driver and i need to know how much fuel i have. would pulling the fuse for it reset it in anyway? or should i just take it to a mechanic?
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Old 08-25-2004, 05:44 PM   #4
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The fuel sender works this way:

0 ohms empty
90 ohms full

Use a multimeter to read the resistance between the purple wire (position b in the tank harness) and ground. If your results are consistent with specs then it is your gauge. If it always reads around 22 ohms then it is the sending unit.
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Old 08-25-2004, 09:06 PM   #5
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Corrosion on the connectors at the top of the tank may be a factor.
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Old 08-25-2004, 09:20 PM   #6
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Quote:
Originally Posted by borntolose
no the tank has never been replaced. how did you get around it? because this is my daily driver and i need to know how much fuel i have. would pulling the fuse for it reset it in anyway? or should i just take it to a mechanic?
if you want to, you can always know just about how many miles or km you get per tank... and use your trip odometer to gauge when you need to fill 'er up.
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Old 08-26-2004, 02:23 AM   #7
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ok, so if it'* the sending unit just scoop up a new one, (dollar figure CND) and if it'* the gauge is it possible to replace? also, the corrosion problem, what happens there?
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Old 08-26-2004, 08:52 AM   #8
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Hopefully it is only corrosion. Usually just need to spray contact cleaner on the connections. I'm not sure if willwren is talking about corrosion on the factory connector which is very easy to get at or the top of the sending unit which will require dropping the tank. If it ia a gauge, it would be a lot simpler to replace the whole cluster but they are hard to find. Replacing just the gauge from a donor cluster is possible. Maybe opensourceguy can sell you one out of his???
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Old 08-26-2004, 01:30 PM   #9
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ok i'll take a look at the factory connections. so how do you go about doing so?
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Old 08-26-2004, 09:30 PM   #10
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repinS has a good idea.... it doesn't fix the problem, but it'* the cheapest solution.

I don't really trust my fuel gauge on either of my cars, I just keep an eye on the odometer. I normally fill up around 350-400kms... which gives me lots of fuel still in the tank, which is a good thing, you don't wanna run it dry constantly.
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