Question about 1991 Lincoln Town Car

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My gas gauge is on E when my car is full of gas, i run gas in the tank until the tank over flows.that way i know it's full of gas.

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Sounds like your fuel float has failed. You will need to install a new one. They are not usually very expensive, but the installation is difficult, requiring the removal of the gas tank. Unless you are mechanically inclined, you would probably need to take it to a mechanic to have it fixed.

Posted on Sep 16, 2010

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My gas gauge stopped working,says it's full,I go to put gas in it and can't get gas into tank ,it wants to come out,but knowing it's empty,was wandering if it needs a new sensor?


Putting gas has nothing to do with you fuel gauge problem
Must problems to add fuel and comes out can be cause by air flow in the tank, also it is recommended to fuel with the engine turn off so the pressure from fuel pump going back to the tank will not affect the fueling , about you fuel gauge not working properly can be cause by a electrical problem such wiring or defective gauge or can be fuel sender problem with most the time it is install on fuel pump assy.

Apr 02, 2015 | 1997 Cadillac Eldorado

1 Answer

What may be wrong with fuel gauge not registering properly


Could be the sending unit in the gas tank or the gauge on the dash.
Until you get it fixed, you can use your odometer to remember to fuel up. Just stay under 200 miles per full tank of gas.

Feb 22, 2015 | 2000 Buick LeSabre

1 Answer

Dash gas gauge stops showing proper gas level once it hits half a tank. Then gauge will fluctuate between empty (light will come on), full and anywhere in between but seems fine from full tank to half


If the trouble with the gauge started after you worked on it then you likely damaged or created a restriction to the movement of the sending unit. You will have to remove the tank and double-check your work.

Mar 01, 2013 | 2000 Buick LeSabre

1 Answer

Gas gauge says full but car runs out of gas just below full


This is one of two things, it could be the fuel level sender or a bad fuel gauge, a bad gauge would mean replacing the cluster,
I would run gas low and drop the tank, remove the fuel assm, the sender is the part that holds the pump, i will enclose a picture to show you.This being a 1996 Bonneville i would bet its the sender in the tank.i would change the fuel pump while you have the tank down. Also check wiring and connector as some of these pumps will tell you to replace the wiring and connector, this is supplied with the new pump.If you are replacing the pump also then replace the fuel filter.\The only problem is make sure you spray the line to the sender on the top side of tank and let soak. this is if there are rusted. in my area they are rusted on these older cars. good day. have enclosed the picture of the fuel pump and the sending unit . hope this is helpful.4_15_2012_10_34_13_pm.jpg4_15_2012_10_34_39_pm.jpg4_15_2012_10_34_53_pm.jpg

Apr 15, 2012 | 1996 Pontiac Bonneville SE CA Value

1 Answer

My gas gauge on my 1998 Olds Cutlas reads empty all the time no matter how much gas is in the tank. need solution.\r\nRoy


The sending unit is located in the fuel tank of the car. It consists of a float, usually made of foam, connected to a thin, metal rod. The end of the rod is mounted to a variable resistor. A resistor is an electrical device that resists the flow of electricity. The more resistance there is, the less current will flow. In a fuel tank, the variable resistor consists of a strip of resistive material connected on one side to the ground. A wiper connected to the gauge slides along this strip of material, conducting the current from the gauge to the resistor. If the wiper is close to the grounded side of the strip, there is less resistive material in the path of the current, so the resistance is small. If the wiper is at the other end of the strip, there is more resistive material in the current's path, so the resistance is large When the float is near the top of the tank, the wiper on the variable resistor rests close to the grounded (negative) side, which means that the resistance is small and a relatively large amount of current passes through the sending unit back to the fuel gauge. As the level in the tank drops, the float sinks, the wiper moves, the resistance increases and the amount of current sent back to the gauge decreases. This mechanism is one reason for the inaccuracy of fuel gauges. You may have noticed how your gauge tends to stay on full for quite a while after filling up. When your tank is full, the float is at its maximum raised position -- its upward movement is limited either by the rod it's connected to or by the top of the tank. This means that the float is submerged, and it won't start to sink until the fuel level drops to almost the bottom of the float. The needle on the gauge won't start to move until the float starts to sink.


Something similar can happen when the float nears the bottom of the tank. Often, the range of motion does not extend to the very bottom, so the float can reach the bottom of its travel while there is still fuel in the tank. This is why, on most cars, the needle goes below empty and eventually stops moving while there is still gas left in the tank.

May 30, 2011 | 1998 Oldsmobile Cutlass

3 Answers

Gas gauge is not reading correctly. Shows a full


the problem is caused by a defective gas gauge sending unit, this part is located inside the gas tank, you must remove the gas tank to replace it.

Dec 02, 2009 | 2002 Cadillac Deville

1 Answer

Gas gauge does not work


was the gas tank empty or full some times the gauges won't work untill the tank is full or the wire for the gauge was not put on properly

Aug 18, 2009 | 2002 Chevrolet Cavalier Coupe

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

Gas gauge - Doodge Caravan 2000


Probably easier to replace fuel tank sender unit as constant on off condition heard or not cant be good .Potential electrical spike.

Feb 15, 2009 | 2000 Dodge Caravan

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