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Fuel gauge not working

2014 breakout what fuel sender is it 240-33ohm,or 73-10ohm?

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Hi Trev, you will have to check with your local dealers parts department for that answer. Good luck

Posted on May 01, 2015

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Jan 13, 2016 | Cars & Trucks

1 Answer

Fuel gauge fuse


Usually labelled Gauges, but if only the fuel gauge doesn't work and the others work, more likely you have a bad or stuck sender in the tank. You can test for this by disconnecting the sender wire and shorting it to ground. If the gauge goes to full, sender is bad.

Jan 15, 2015 | Cars & Trucks

1 Answer

Just purchased a 2003 cadillac cts the fuel gauge does not work thought it was out of fuel ---filled the car up still does not work


The fuel sender is in the gas tank. If the gauge stays on empty then the sender may be bad . If the gauge reads anything else the wire between the sender and gauge is open. A bad sender can also give the same indication.

Sep 23, 2014 | 2003 Cadillac CTS

1 Answer

Speedometer and fuel guage not working 2003 deuce


WHAT DTC\'s are set.



You may have a loose, corroded etc wiring connection in the console.



Fuel gauge can be diagnosed as follows:



When the ignition switch is ON the fuel gauge is connected to 12 VDC, current flows through the gauge and the variable resistor in the fuel gauge sending unit to ground. The sending unit float controls the amount of resistance in the variable resistor. Malfunctioning fuel gauges may be the result of a fuel gauge sender or a fuel gauge not being properly grounded OR there may be a defect in the fuel gauge sender or in the fuel gauge itself OR there may be an open circuit caused by a loose or disconnected connection or a broken wire between the ignition switch to the fuel gauge.



A suspect fuel gauge system can be tested by FIRST removing the gauge and grounding the Y/W wire of the fuel gauge sender located at the bottom of the gauge, turning the ignition switch ON at which point the fuel gauge must indicate FULL. And if it does so then the fuel gauge is functioning correctly.And if it does not read FULL then get a multimeter set to the RX1 scale and measure the resistance of the sending unit by placing one of the meter probes on the Y/W wire and the other probe on a good ground. THEN for Softail if the fuel tank is full, the reading should be 27-40 ohms. an empty tank should have a 240-264 ohm resistance and a half full tank will be approximately 97-118 ohms. FOR ALL MODELS if there is a very high meter resistance or infinity reading the sender may be "open" or not grounded. In this case check to see if the sender and fuel tank are grounded by placing one of the ohmmeter probes on the flange of the sender and the other probe on crankcase and if the ground is good the meter must indicate one ohm or less and if the reading is one ohm or less the sender is defective and requires replacement and if a higher resistance reading is obtained you will need to check for a poor ground wire. THEN you can check the voltage to the O/W (+) wire and the BK (-) wire of the fuel gauge connector if the gauge did not indicate FULL and the correct reading will depend on the source voltage and the level of fuel in the tank or the position of the sender float arm on the variable resistor etc. If there is NO battery voltage present there may be a broken, highly corroded or disconnected power wire. If you cannot find a problem using the above testingreplace the gauge itself.

Jun 08, 2014 | 2003 Harley Davidson FXST Softail Standard

1 Answer

Fuel gauge 2005 softail repair


Sounds like a loose or corroded wire connection or a broken and intermittent defect for power OR ground but see below for generla diagnostics and etc:





When the ignition switch is ON the fuel gauge is connected to 12 VDC, current flows through the gauge and the variable resistor in the fuel gauge sending unit to ground. The sending unit float controls the amount of resistance in the variable resistor. Malfunctioning fuel gauges may be the result of a fuel gauge sender or a fuel gauge not being properly grounded OR there may be a defect in the fuel gauge sender or in the fuel gauge itself OR there may be an open circuit caused by a loose or disconnected connection or a broken wire between the ignition switch to the fuel gauge.



A suspect fuel gauge system can be tested by FIRST removing the gauge and grounding the Y/W wire of the fuel gauge sender located at the bottom of the gauge, turning the ignition switch ON at which point the fuel gauge must indicate FULL. And if it does so then the fuel gauge is functioning correctly.And if it does not read FULL then get a multimeter set to the RX1 scale and measure the resistance of the sending unit by placing one of the meter probes on the Y/W wire and the other probe on a good ground. THEN for Softail if the fuel tank is full, the reading should be 27-40 ohms. an empty tank should have a 240-264 ohm resistance and a half full tank will be approximately 97-118 ohms. FOR ALL MODELS if there is a very high meter resistance or infinity reading the sender may be "open" or not grounded. In this case check to see if the sender and fuel tank are grounded by placing one of the ohmmeter probes on the flange of the sender and the other probe on crankcase and if the ground is good the meter must indicate one ohm or less and if the reading is one ohm or less the sender is defective and requires replacement and if a higher resistance reading is obtained you will need to check for a poor ground wire. THEN you can check the voltage to the O/W (+) wire and the BK (-) wire of the fuel gauge connector if the gauge did not indicate FULL and the correct reading will depend on the source voltage and the level of fuel in the tank or the position of the sender float arm on the variable resistor etc. If there is NO battery voltage present there may be a broken, highly corroded or disconnected power wire. If you cannot find a problem using the above testing replace the gauge itself.

May 28, 2014 | 2005 Harley Davidson FLSTSC - FLSTSCI...

1 Answer

The light does not work or the fuel gauge works it stays on empty


When the ignition switch is ON the fuel gauge is connected to 12 VDC, current flows through the gauge and the variable resistor in the fuel gauge sending unit to ground. The sending unit float controls the amount of resistance in the variable resistor. Malfunctioning fuel gauges may be the result of a fuel gauge sender or a fuel gauge not being properly grounded OR there may be a defect in the fuel gauge sender or in the fuel gauge itself OR there may be an open circuit caused by a loose or disconnected connection or a broken wire between the ignition switch to the fuel gauge.



A suspect fuel gauge system can be tested by FIRST removing the gauge and grounding the Y/W wire of the fuel gauge sender located at the bottom of the gauge, turning the ignition switch ON at which point the fuel gauge must indicate FULL. And if it does so then the fuel gauge is functioning correctly.And if it does not read FULL then get a multimeter set to the RX1 scale and measure the resistance of the sending unit by placing one of the meter probes on the Y/W wire and the other probe on a good ground. THEN for Softail if the fuel tank is full, the reading should be 27-40 ohms. an empty tank should have a 240-264 ohm resistance and a half full tank will be approximately 97-118 ohms. FOR ALL MODELS if there is a very highmeter resistance or infinity reading the sender may be "open" or not grounded. In this case check to see if the sender and fuel tank are grounded by placing one of the ohmmeter probes on the flange of the sender and the other probe on crankcase and if the ground is good the meter must indicate one ohm or less and if the reading is one ohm or less the sender is defective and requires replacement and if a higher resistance reading is obtained you will need to check for a poor ground wire. THENyou can check the voltage to the O/W (+) wire and the BK (-) wire of the fuel gauge connector if the gauge did not indicate FULL and the correct reading will depend on the source voltage and the level of fuel in the tank or the position of the sender float arm on the variable resistor etc. If there is NO battery voltage present there may be a broken, highly corroded or disconnected power wire. If you cannot find a problem using the above testing replace the gauge itself.

Apr 16, 2014 | 2006 Harley Davidson FXDBI Street Bob

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

Harley Davidson gas tank reads half a tank but its empty


Disconnect the harness connector from the speedometer.

Check for voltage on terminal "B" of fuel pump/level sender connector.


If voltage is present, locate and repair the short to voltage.


If voltage is not present, connect the breakout box (part # HD-42682) to the speedometer and it's harness connector.
Check for continuity between terminal 9 of the breakout box and terminal "A" of the fuel pump/level sender connector.


If continuity is not present, repair the break in the yellow/white wire.


If continuity is present, check for continuity to chassis ground on the terminal "C" of the fuel pump/level sender connector.


If continuity is not present, repair the break in the black/green wire.


If continuity is present, repair/replace the fuel pump/level sender.

Sep 01, 2012 | 2008 Harley Davidson FLHRC Road King...

1 Answer

Not working


take the wire off the fuel sender and ground it, the fuel gauge should read full. if it does, the sender or the float on the sender is bad. if it does not read full, there is a bad wire or connection between the fuel tank and gauge. if you take the sender out, and the float is bad, these are easily available, you can hook up the wire and another wire to ground the body of the sender and you should be able to work the arm up and down and the gauge should read.

Oct 02, 2009 | Ford F-100 Cars & Trucks

1 Answer

Pajero NK87 petrol guage not working, shows empty even when tank is full


Sounds like the Fuel sender unit in the fuel tank needs replacing however you may want to check that the electrical plugs are contacting properly,Check that the gauge is working by putting a piece of wire from the sender unit wire to the chassis,at the fuel tank sender unit plug,Turn ignition on while watching gauge if it moves toward fill turn ignition off and remove wire to chassis.If gauge moves it means from the fuel tank to fuel gauge is intact and not your problem.

Oct 24, 2008 | Mitsubishi Montero Cars & Trucks

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