Question about 1994 Jeep Grand Cherokee

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Fuel tank show empty when full - 1994 Jeep Grand Cherokee

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Either the wire feeding the gauge is broken somewhere between the gauge or the fuel tank, or the sender unit needs replacing. Anyone recently work on your fuel delivery system?

Posted on Sep 02, 2010

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Posted on Jan 02, 2017

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Fuel gauge full when not full. only one quarter a tank nearly full could only get 3 gallon in full could not get anymore in 160 miles fuel light came on and Gage showed empty. nigel from Burnley


probably stuck or damaged fuel sender in the tank.. you could try banging the bottom of the fuel tank to un stick it but if that dont work it will need to be replaced .

Jun 03, 2017 | Cars & Trucks

1 Answer

The gas gauge on my 2001 Nissan Altima shows full when filled up, but only tets to 1/2 full when it is near empty. Suggestions?


Either the fuel tank sender in the tank is bad and needs replacement, or the fuel gauge is faulty. I would bet the one in the tank is probably bad, because that's usually the case. Find the connection at the fuel tank, disconnect it and use a VOM to get a resistance reading while the tank is empty and reading 1/2. It should match the specs.

Sep 24, 2015 | 2001 Nissan Altima

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Fuel guage always shows empty


It sounds as if the fuel tank sending unit is faulty. This is a small float connected to a variable resistor on the fuel pump/sending unit assembly. Unfortunately this assembly is fairly expensive (over $300) and the fuel tank may need to be removed to replace it.

Aug 23, 2012 | 1999 Isuzu Rodeo

1 Answer

Car of year 1998, when tank is full or medium from fuel, guage shows empty. When tank is completely empty, the guage shows full. Guage is of digital type with the bars. What can I do ? Any tests I...


Digital gauge also gets its input for fuel level from a float in the tank. Here the culprit can be that float because the error is systematic i.e., full on empty and empty on full/half. If the reading was erratic then it was something to do with IC in the bars display panel.

Aug 15, 2011 | Toyota Yaris Cars & Trucks

1 Answer

Dash pannel fuel indicator lamp shows empty but tank full


This would be very common of the fuel pump and level module in the tank. The module from auto zone runs about $280. This must be purchased as a module and replaced. The tank then needs to be dropped out of the car to make this repair. Let me know if you need further instructions to complete this.

Jul 24, 2010 | 2003 Cadillac Deville

1 Answer

1987 fuel level guage issue 87 F150 Lariat XLT 5.0 2wd. Have a very similar situation. Front tank position shows empty even when I know there is gas. Rear tank position shows full after refilling but...


the gas is regulated from the switching valve you control off the dash. Check the valve to hear it switch
have a friend help you do this. it will be located under the truck between the two tanks. You may have a faultly valve or switch rattling inside changing the tanks setting also while driving which will be hard to tell

Jan 31, 2010 | 1987 Ford F 150

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

Fuel guage 2001 chevrolet silverado 1500


Hi
We have the same truck that does the same thing.
The fuel sender in tank is faulty. It is in your gas tank. Common chevrolet problem.

Apr 02, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

1989 Saab 900 low level fuel light


You don;t say whether the fuel gauge is reading accurately, or whether it's always on empty. If the gauge is always showing empty, it's most likely a problem with the sending unit in the fuel tank. Check the resistance across the two terminals of the sending unit.

On a C900, the fuel sender level unit is separate from the fuel pump and located on the right side top of the tank, accessible by removing the trunk floor lift up panel (the pump is located on the left side top of the tank.
Possible problems are: electrical line off or broken, float not working (it's fairly delicate); or gauge not working.

Test the resistance of the sending unit with the lines disconnected, the resistance should be 2.6 to 3.8 ohms full tank, 63.3 to 67.5 ohms empty tank; and test for voltage across the top of the sender unit, if no voltage, that's likely the problem!

If the gauge is otherwise reading accurately (showing 'full' for a full tank, etc) then the problem is likely a gauge malfunction and can be simply replaced.

Good luck!

Saabreur

Jul 10, 2008 | 1989 Saab 900 4 Door

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