Question about 2000 Chevrolet Venture

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Fuel Gauge The fuel gauge indicates full of course when the tank is full, but when my overhead displays right around 10gals remaining the gauge indicates empty. How can I fix this problem?

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Replace the sending unit it will leave you stuck when not ready for it please carry small can of gas until replaced sending unit good luck

Posted on Jun 30, 2008

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I dropped the tank on my '99 Durango, installed a new fuel pump unit but the fuel gauge still shows empty. How do I troubleshoot?


The fuel gauge is directly controlled by the fuel sending unit inside the fuel tank, it sends a ground return signal back to the fuel gauge. I am assuming of course that your fuel gauge is okay. To test your fuel gauge, connect the wire which goes to the fuel sending unit to chassis ground. Your fuel gauge should respond and indicate Full Tank. If not, there is a broken wire somewhere between your fuel gauge and the sending unit. Before connecting the wire that goes to the sending unit to ground, check it first with a DC Voltmeter, you should be able to read +12volts. Be sure that you turn your ignition switch to it's ON position.

Apr 28, 2016 | Cars & Trucks

1 Answer

I have a 1992 Mercury Grand Marquis Ls with a fuel gauge that does not work (gauge may be reversed)??? help please.


The fuel level indicating system is a magnetic type system, which consists of the sending unit located in the fuel tank, an anti-slosh module located on the back of the instrument cluster, and a fuel gauge located in the instrument cluster. The sending unit changes resistance according to the level of fuel in the fuel tank, which varies the current flow through the gauge.The pointer position varies proportionately to the current flow. In this system, the sending unit resistance is low (22 ohms) when the fuel level is low and high( 145 ohms) when the fuel level is high. The pointer of the magnetic gauge remains in position when the ignition is turned to the Off position. On some models, an anti-slosh module is used to dampen out fluctuating fuel signals from the sender. Some vehicles are equipped with a low fuel warning indicator. The anti-slosh module will also actuate the low fuel indicator when the fuel level in the tank reaches 1/16 to 1/8 full.


Do your other gauges/warning indicators work properly with the ignition on? If not, check for power at the fuse panel/fuses.

If they do then partially remove your cluster with connector still installed and check for voltage at cluster connector and gauge. Check continuity of cluster and gauge for ground.

Sometimes the anti-slosh module (if installed) goes bad in the Grand Marquis but not likely.

Sender troubleshooting:
  1. Perform test with resistors as follows:
    1. Disconnect wiring connector at sender unit, then connect resistor between gauge lead and a suitable ground.
    2. Turn ignition switch to On position.
    3. With 145 ohm resistor, the gauge pointer should contact the Full mark.
    4. With 22 ohm resistor, the gauge pointer should contact the Empty mark.
  1. Perform test with fuel sender of known quality as follows:
    1. Turn ignition to Off position.
    2. Disconnect wiring connector from sender and connect it to test sender.
    3. Move float rod away from fuel filter against Full stop position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or above the Full mark.
    4. Move float rod toward fuel filter against Empty stop position. Turn ignition switch to Off position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or below the Empty mark. If gauge works properly replace sender, which involves dropping fuel tank.

Mar 23, 2013 | 1992 Mercury Grand Marquis

1 Answer

Does the fuel tank in a 2004 Mitsubishi Diamante needs to be full in order for the gauge to work?


Hi Marglitt, The gauge should work with any amount of fuel and indicate how much is in the tank. What does happen on modern cars, is that the gauge will fail to move if a small amount of fuel is filled into the tank. This is a measure taken as most petrol driven vehicles have the pumps immersed in fuel, which helps cool the pump and prolongs the life of the unit.The reserve light may remain on if the fuel level has not risen above the operational level of the same warning light. Regards Johngee10

Jul 17, 2011 | Mitsubishi Diamante Cars & Trucks

2 Answers

Fuel Gauge


Most of the time it is the Sending unit in the tank

Dec 27, 2009 | 2000 Kia Sportage

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2001 HYUNDAI FUEL GAUGE


well its either the wire between the tank and guage in dash or it is the gauge in the dash

Aug 15, 2009 | 2001 Hyundai Accent

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Fuel and temp sensor problem toyota corolla two door 1989


Find the temperature sensor(usually around the thermostat housing)'disconnect connector and ground it with a test light. Observe the inside gauge. It should slowly go up. If so, change sensor. Do the same for the fuel gauge located on the fuel tank. If gauge move to fill as you groung the sending unit wire, change sending unit. Test the right wire. Ask for further assistance.

Jun 11, 2009 | 1989 Toyota Corolla 2 Door

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Erratic fuel gauge 1995 Ford F-350


my friend most of the latest car come's across such problem so it's not the ground wiring problem it's the problem with the fuel gauge unit fitted inside the fuel tank it's time to get replaced it one thing is for sure that part is costly b'cause the fuel gauge is combination of  2 part's the fuel supply pumping motor unit & fuel level indicating gauge unit for such problem see for your nearest FORD authorised service centre across near by so till then drive safe have happy motoring so see you soon my friend..... !

May 08, 2009 | Ford F-350 Cars & Trucks

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