Question about 1999 Oldsmobile Alero

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The needle for the gas gauge fluctuates, it will say empty and the light is on then it will go up and say half full or full and then back down!!!

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You need to check your GAS FLOAT terminal, corrosion and oxidation sometimes send an ERROR to ur gauge( DON"T WORRY no spark will happen 'cause thats only a GROUND activated wire) ! After cleaning it and nothing happens you need to bring ur car to the nearest garage mechanic to check on the GAS FLOAT itself!
Taaah!

Posted on Nov 11, 2010

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I know you don't want to drop the tank and I could lie to you, but the truth is that you have to drop the tank to check and fix this problem. It really is not as hard as you may think. Even easier if you are low on gas. Putting a full tank back up is a real challenge!
So, after you pull the tank down and remove the sending unit/fuel pump, get a ohm meter and set it to Ohms. Insert the leads one into each opening on the connector on the sending unit plug. Slowly raise and lower the arm with the fuel float on it and see if your ohms fluctuate. Also notice if there is any resistance on the arm as you move it up and down. This is how you check your problem. I have seen it many times before. A new sending unit will fix this problem, though if your ohms are fluctuating and your float arm is stiff, you can temporarliy fix it with a few squirts of WD40. It will start to hang up again after a while though.
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tnx 4 using fixya.

drcool

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