My gas gauge reads empty but is full. The gas light is on and the red security light on the speedometer is also on.

 

Tear into the gas tank

1.) Ensure the wiring connected - and the fuel sender actually works

if it does

2.) Then adjust the float

if it does not

3.) Trouble shoot the sending unit

You didn't state the bike - so I'll assume it a newer one.., and of the dyna line


Sending unit is located on the right - under the gas fill

It can be removed without removing the fuel pump (but since you're in there..., and depending on the mileage - it might be a good time to replace the filter / regulator / sock..., and check out / replace the fuel lines)

Any who - the sending unit snaps in (plastic retaining snaps)..., so you can "carefully" unsnap it to remove

If you need to bend the float arm - bend it down..., also while you're at it - bend it to the right as it's likely rubbing on the inner tank wall

At a minimum - if you do this - you'll need to replace the 12 screws.., and rubber gasket holding on the tank cover

It a lot easier than what I make it sound

Questions - ask

Ghost

 

Check for a blown fuse, and if you have worked on the tank, you may have pulled a wire under the dash.

 

Once you determine if the 'bogus gauge' is plugged into the wiring harness under the tank, don't even bother to look at the silly thing. Go by how many miles you have on the tank. I know by the fact that I get 40.75mpg at what point I need fuel. The gauge is dependant on a float similar to that of a old toilet tank and you shouldn't count on its reliability.

 

Also...nice 1st post...

 

I have tried resetting mine .....and can see lo rng show up but 3 tanks later no fuel low light and not range place on my speedometer readout....


Like I said gauge reads fine ... 2005 fatboy 5000 miles now had 3400 when I got it in Aug-sept..... I know its the dyna section .... same gauge ... saw the discussion ...Im fixing to pull the tank and get at the connector as the bike did sit for years really ...I have used electronic grease on connections I have touched ..... but the lo range hasn't worked since I got the bike...


thought some one might have one of those oh yea try this ..... before I tear *** into it....

 

Welcome to the forum and congrats on your first post.
Forget the stupid fuel gauge and use your tripmeter.

 

I always hit the trip to 0 when gasing up. When it gets to 120 miles I am ready for a stop an fill it up.

 

I found a 2005 owners manual for my fatty .... and it does not have DTE or range .... just a half gallon left idiot get gas light ....