Question about 2002 Harley Davidson FXST Softail Standard

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Fuel gauge not working?just wont read fuel level since i brought the bike?is this a common problem

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Regrettably, yes. Harley's fuel gauges are notorious for failure. I have a wiring diagram is you'd like it but you'll have to send me an e-mail so I can attach the JPEG file and send it back. This forum will only allow a 150kb attachement and it's larger than that. Contact me at
Remind me of what you need.

good Luck

Posted on Sep 12, 2010


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Related Questions:

1 Answer

My gas gauge wont work right.up an down but trys to work for a minute

The most common point of failure in a gas gauge is the fuel level sender in the tank, When it wears out, the needle on the gage does not work correctly and can become irregular in response.

Sep 20, 2016 | 2002 Buick LeSabre

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On 03 Mazda mpv I noticed when parked downhill fuel gauge drops below actual level & takes a bit of time to correct once on level ground again. Is this a known issue & is there a fix?

This is a very common occurrence, the fuel sending mechanism is inside the fuel tank, attached to an arm is a float (a device that will rise to the top of the fuel level). When parked at an upward or downhill angle, the fuel will collect to the opposite side of the tank (liquids will go to a natural level) and cause the float to move the lever. As the lever moves it rubs along a winding of wires creating a different resistance along the way. This changes the amount of current that will flow through the fuel gauge and change the level indication. When you are on level ground it will take a short period for the fuel gauge to return to the correct reading.

Sep 01, 2015 | Mazda Cars & Trucks

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My 2006 ford explorer displays low fuel level n the fuel gauge does nt move or work even when there is full tank of fuel

make sure the sender is grounded or your guage wont work at all..there should be a ground wire .. if not add one someplace..

Dec 26, 2013 | Ford Cars & Trucks

1 Answer

Fuel guage does not work

The most common cause of an inop fuel gauge is the fuel level sender inside the gas tank is defective, this causes the gauge to read empty or just move a little when filled in some cases depending on where the break in the resistor that the float moves is located.

Oct 25, 2012 | 2007 Chrysler Pacifica FWD New Cars

1 Answer

Fuel gauge reads correctly then goes to empty

9 times out of 10 the fuel pump/level sender assembly is the cause. Sometimes the gauge pod is faulty, and there have been cases where there were either poor connector pin fit issues and/or chaffed/melted/cut wires in the harness that leads back to the fuel pump. It is an extremely common fault and would be surprised if the pump/level sender assembly wasn't the cause.

I hope this info helps!

Sep 21, 2012 | 1999 Pontiac Grand Am GT

1 Answer

Replace fuel pump and sending unit 1997 cadillac deville. before replacing old unit gauge read low fuel but tank has 4 gal or more. after replacing unit gauges read fill with switch in on protion gauges...

what could be the problem ???? The problem is you tried to fix something you have no clue how it works .... Your best bet , take it to a qualified repair shop. You have no idea of the complexity of these cadillac systems . I know you don't have a $ 5000 dollar factory scan tool or equivalent to diagnose . The sending unit in the fuel tank is a input to the BCM . The BCM sends this info to the instrument cluster over the class 2 serial data network - communication network for the control modules on the vehicle. Fuel Level
The body control module (PZM) monitors the fuel level sender input in order to determine the current fuel level. The PZM filters the input and sends a message via the Class 2 serial data line. The IPC receives this message and displays the current fuel level. The fuel level is sent from the PZM to the IPC at changes of 0.5 L (0.02 gal) or on the request of the IPC, with a resolution of 0.04 L (0.01 gal).
• For the digital IPC, when the fuel level is above 18.5 gal, the IPC displays an F. For readings between 18.5-2.5 gal, whole gallon/liter numbers are displayed. When the fuel level reaches 3.0 gal the message FUEL LEVEL LOW is displayed on the driver message center. When the fuel level reaches 2.5 gal, the IPC displays an E. When the fuel level is 1.2 gal or below the IPC displays a flashing E.
• For the analog IPC, when the fuel level is above 18.5 gal, the fuel gauge pointer is on F. When the fuel level is below 2.5 gal the fuel gauge pointer moves to E. When the fuel level is below 3.0 gal the IPC displays a FUEL LEVEL LOW message.
If the updates are not received or a communication error is detected, the IPC performs the following actions:
• For the digital IPC, the fuel gauge is dashed.
• For the analog IPC, the fuel gauge pointer moves to E.

Fuel Gage Inaccurate or Inoperative
Circuit Description
The IPC monitors the fuel level sent by the PZM through the class 2 serial data line. The IPC software controls one of the following two gauge types:
• A digital gauge consisting if a two-digit numeric seven-segment display
• An analog gauge consisting of a needle pointer.
The IPC interpolates and scales the fuel level information that the IPC receives from the PZM.
When you operate the vehicle in diagnostic mode, either in the vehicle diagnostic system or with a scan tool connected, the fuel signal supplied to the IPC is not filtered by the PZM. The unfiltered fuel signal causes the IPC to show real time readings and may be mistaken as an erratic fuel level display.
Diagnostic Aids
Connect a scan tool to the DLC.
Test for any set DTCs if no DTCs are set current. Refer to System Check in Body Control Module (PZM) Diagnosis.

Your best bet , take your vehicle to a qualified repair shop.

Feb 09, 2018 | 1997 Cadillac DeVille

1 Answer

Bike wont start ran low on fuel drove home shut down the bike now it wont start. We have spark it must be fuel where is the fuel filter located

Hi Allan.

The fuel filters are located inside the fuel tank, attached to the fuel pump. You will need to remove the tank and to turn the tank upside down (after disconnecting fuel lines and bleeding) to access the filter and pump. The procedure below is taken from Kingpin and Vegas manual at page 103. I have uploaded the manual here:2180 Vic Kingpin-Vegas Manual. The fuel tank removal procedure is described in the manual from page 103. The fuel pump is reported as common failure in this bike. Use an hand gauge to read fuel pressure in lines, that may reveal if the pump is working.Check in general the fuel delivery system. Check the clutch safety switch (see p113 in manual), check if any additional fuel cutoff or kickstand switch has been installed.

Here resource page.

Here extracts from service manuals and wiring diagram.



Nov 08, 2011 | 2006 Victory Vegas 8-Ball

1 Answer

The fuel gauge dont work

The #1 most common cause of the fuel level gauge not working is the fuel level sending unit inside the fuel tank. The fuel tank must be dropped down and out of the Van to service the fuel level sensor.

Jun 29, 2011 | 2000 Dodge Caravan

3 Answers

Is there a fuse just for the gas gauge in a 2004 chevy tahoe

If your fuel gauge is not working, it is most likely because of a failed fuel level sending unit inside the tank. This is a very common problem. It is serviced as part of the fuel pump module assembly.

Also please read this article: Where's The Fuse?

Feb 21, 2011 | 2004 Chevrolet Tahoe

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