Question about 2003 Harley Davidson FLSTF Fat boy

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Fuel gauge is stuck on 2003 fatboy need to remove

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Contact me off forum and i"ll send you a trouble shooting chart and removal instructions. Way too much to type out here. I can't send a file any larger than 150kb. wd4ity@bellsouth.net

Good Luck
steve

Posted on Oct 04, 2010

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1 Answer

Installing a led fuel guage 0n my2001 fatboy do i just use the orange &blk wires


If the LED fuel gauge does not have connectors to match the factory connectors, then you need to take this to a qualified tech or return the product. See the diagram for connection points. "Brand X" electrical products are challenging to install.
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Sep 02, 2014 | Harley Davidson FLSTC Heritage Softail...

1 Answer

I have a 2003 Fatboy fuel injected. I recently got the fuel gauge repaired. After leaving the dealer, I put 170 miles before the fuel light came on. I filled the tank to the top, and it only took 3.1...


Yes, your fuel gauge was not properly repaired in all likelihood. Take it back and advise them of this. ALSO:



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 testingreplace the gauge itself.

May 04, 2014 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

My 2003 Fatboy's fuel light comes on, but the tank will only take about 2.5 to 3 gallons of fuel.


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.

May 04, 2014 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

Connect gauges


Go back to H-D and ask parts to print you off the instructions. Some bikes need an adapter also.

May 04, 2014 | Harley Davidson FLSTF Fat boy Motorcycles

1 Answer

I have a 2003 Fatboy fuel injected. I recently got the fuel gauge repaired. After leaving the dealer, I put 170 miles before the fuel light came on. I filled the tank to the top, and it only took 3.1...


sounds like you may have the wrong gauge for the sender or a sender unit wrong for the gauge ,take it back to the dealer and get them to sort it out cheers

May 04, 2014 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

Replace fuel gauge 2012 Harley fatboy


Hi Anonymous, it's too bad you can't find the very first and best tool you ever bought for your Harley Davidson. Despair not, for a mere $6.50 you may be able to download another one from the website below and good luck. Harley Davidson Manuals Mark Workshop

Jul 18, 2012 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

My fuel gauge on my 03 H.D. Fatboy reads full when key is on and when the key is off it says empty


That's normal.... when the key is off the electricity goes off too.... so the gas meter stops working...
Hace a nice day.....

Aug 23, 2011 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

How do I replace the fuel gauge on a 2004 FATBOY?


If the fuel gauge is in the tank where the left side fuel cap should be, rock the fuel gauge while pulling up on it. It's held in by an O-ring. Be careful as the wires that run from the gauge to the sending unit in the tank are very short.

If you need information about how the fuel gauge works and testing, contact me off forum at wd4ity@bellsouth.net I'll send you some information on it. This forum will only allow me to attach a file of 150kb. Much to small to be of much good. Remind me of what you need.

Good Luck
Steve

Feb 03, 2011 | 2004 Harley Davidson FLSTF - FLSTFI Fat...

1 Answer

Toyota 4 runner gas gauge is stuck on full.


The solution to your problem most likely is the fuel gauge sending unit which is located on the fuel pump in the tank. SOMETIMES, the fuel pump and gauge are sold separately, but chances are, you may have to replace the whole assembly. Which is actually good measure, considering that you'll have the tank removed, anyway.

I hope this helps! :)

Dec 15, 2010 | 2003 Toyota 4Runner

2 Answers

My gas gauge doesn't work in my 2003 bonneville. What can i do to fix this problem, along with my broken gas gauge my heater in my drivers side seat is no longer working, i would appreciate any help thanks...


It might not be anything wrong with your fuel sending unit. Keep an eye on your other gauges. I own a 2004 Pontiac Bonneville GXP. All of my gauges have started acting erratically. It started with my Temp. gauge, moved on to my speedometer, and now my oil pressure , fuel level and batty volt gauges are affected too. Its a very common problem with GM vehicles.

Nov 12, 2009 | 2004 Pontiac Bonneville

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