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1999 deville fuel gauge {elec} goes from full to empty.Do I need a pump or fuel leveler sensor?

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Fuel level assembly

Posted on Mar 25, 2011

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Fuel gauge reads correctly then goes to empty


9 times out of 10 the fuel pump/level sender assembly is the cause. Sometimes the gauge pod is faulty, and there have been cases where there were either poor connector pin fit issues and/or chaffed/melted/cut wires in the harness that leads back to the fuel pump. It is an extremely common fault and would be surprised if the pump/level sender assembly wasn't the cause.

I hope this info helps!
~subyguru~

Sep 21, 2012 | 1999 Pontiac Grand Am GT

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1999 S10 Gas gauge bounces from empty to full, nothing between


This problem is caused by the fuel level sensor inside the gas tank, you will need to drop the fuel tank out or remove the pickup bed to access the level sensor which is part of the fuel pump module on most GM products. The part is about $200.00 and 3 hours to install. See picture below. You can buy the part at a very good price from the on line company I use for parts www.rockauto.com
8_8_2012_11_10_24_pm.jpg

Aug 08, 2012 | 1999 Chevrolet S-10 Pickup

1 Answer

Fuel gauge not working properly. Says fuel tank full when fuel tank empty


Could be 3 thing - the gauge on the dash, the wiring or the fuel level indicator in the tank. All three are not easily accessible - the best test would be to measure the voltage on the level sensor on the tank.

It usually means removing the fuel tank and start measuring. If its ok, supply voltage to the lead towards the fuel gauge. If the gauge doesn't move it's wiring or the fuel gauge itself.

Jun 26, 2011 | 1999 Cadillac DeVille

1 Answer

Fuel gauge not reading fuel levels correctly. Fuel gauge says full when tank is near empty.


it is stuck io would put fuel cleaner in the tank and then i would if not i would replace it the floater is fowled up

Sep 12, 2010 | 1999 Cadillac DeVille

1 Answer

Put in new float unit on fuel pump.gas gauge still not working


did you replaced just the float , because if the resistor that messures the level is not good you didn't do any thing you have to change the level sensor next to the pump..,Im sure that;s all the problem, you should also check the wiring next to the pumpand any connector down there

Aug 02, 2009 | 2000 Dodge Dakota Quad Cab

1 Answer

When the gas tank is full the gas gauge shows as empty. When the gas tank is empty the gas gauge shows as full.


Well that tells me that someone installed the wrong fuel level sensor. Your going to have to drop the tank and pull the pump and float assymbly out. Then go to a parts store and get a sending unit that has the opposite resistance of that sending unit. Just wait until the tank is empty so its a lot lighter. You can call the parts store or go down and see if there is multiple sending units. The sending units work by resistance, when the tank is full the float moves up and turns a wheel in the sending unit, which either removes or increases the resistance causing the gauge to lower. The sending units either give full resistance at full or no resistance at full and then changes as the level goes down until it does the opposite at empty.

Jul 17, 2009 | 1999 Chevrolet Cavalier

1 Answer

1999 GMC Sierra fuel gauge is erratic


the fuel level sensor inside your gas tank might be defective
you need to drop the tank and check the level sensor

Apr 02, 2009 | 1999 GMC Sierra

1 Answer

Fuel gauge showing empty


open circuit in the fuel level sensor. mounted in tank. as the fuel level in the tank starts to drop the arm will move past the dead spot on the sensor and the gauge will start reading again.i dont recommend diy replacement of the fuel level sender.

Dec 12, 2008 | 1995 Cadillac DeVille

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