low fuel light always on (1 Viewer)

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Nov 13, 2013
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Has anyone else had this issue? my low fuel light is always on. How does that circuit work. I assume it's a problem in the instrument cluster.
 
Nope, most likely the circuit inside the tank. The fuel pump assembly has both circuits on it. Pull the fuel pump and check or install new assembly to solve it.
 
Nope, most likely the circuit inside the tank. The fuel pump assembly has both circuits on it. Pull the fuel pump and check or install new assembly to solve it.

Just unplugging harness at the tank will net info, if the light goes out, the problem is in the tank, if not it's harness or cluster.
 
Nope, most likely the circuit inside the tank. The fuel pump assembly has both circuits on it. Pull the fuel pump and check or install new assembly to solve it.

Just unplugging harness at the tank will net info, if the light goes out, the problem is in the tank, if not it's harness or cluster.

Thanks... so it sounds like there is a separate circuits for the low fuel level and the gauge. (the gauge works fine).
I'll try disconnecting the sender at the tank and see what happens.

thanks for the help.
 
Thanks... so it sounds like there is a separate circuits for the low fuel level and the gauge. (the gauge works fine).
I'll try disconnecting the sender at the tank and see what happens.

thanks for the help.

Would you mind documenting the procedure and reporting back here. It will be helpful to others.

Mine has just recently started doing the same thing. My fuel gauge works fine and is accurate...but the low fuel light is forever on.

Low Fuel Light.jpg
 
Im having the same issue. Did you guys resolve this?

I haven't yet looked into mine...but I suspect I will find either chaffed wiring or a problem with the sending unit (in tank) itself. Mine started out being intermittent...but then became a steady 'on' light at the dash.
 
I haven't yet looked into mine...but I suspect I will find either chaffed wiring or a problem with the sending unit (in tank) itself. Mine started out being intermittent...but then became a steady 'on' light at the dash.

I changed out the send ing unit for a ne wone couple months ago and my problem just started about after some wheeling. Let me know what uf find if you ever find it and ill do the same.
 
I changed out the send ing unit for a ne wone couple months ago and my problem just started about after some wheeling. Let me know what uf find if you ever find it and ill do the same.

Sounds good, it's on my list of things to do while I have Cruiser sitting up for some needed maintenance.
 
Mine started doing that when I replaced a few of the bulbs with LEDs. No solution yet
 
Anyone solve this problem? My light started to come on very dimly for the past 3-4months regardless of fuel level. This week it has become fully lit.

Gauge works perfectly fine. Just the E light is the issue. For reference I have a 92 - 80.

Thanks

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Mine started doing that when I replaced a few of the bulbs with LEDs. No solution yet
Same here. I read somewhere in these forums that one of the other lights in the cluster participates in the circuit with the low level indicator. They implied that an led in that position would have less resistance, and send more juice to the low level bulb. Haven't tried going back in there yet
 
Same here. I read somewhere in these forums that one of the other lights in the cluster participates in the circuit with the low level indicator. They implied that an led in that position would have less resistance, and send more juice to the low level bulb. Haven't tried going back in there yet

Interesting.....might have to break out my EWD and look into that....but one thing that challenges that, is that mine is intermittent. I wouldn't think that an LED light would cause that at times and then not.

Low Fuel Light (2).jpg
 
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Interesting.....might have to break out my EWD and look into that....but one thing that challenges that, is that mine in intermittent. I wouldn't think that an LED light would cause that at times and then not.
Ah - mine's steady, but definitely started as soon as I put the cluster back in with LEDs in a few positions (not that one, since it needed to dim). Haven't gone back in, holding out for a better theory than just rolling all the lights back to OEM. Let us know if get a win on this one.
 
I did the same thing change my cluster with LEDs and low fuel light is on. Anyone have a FIX?
 
Just unplugging harness at the tank will net info, if the light goes out, the problem is in the tank, if not it's harness or cluster.
I did this and you were correct. Pictured are when plugged in and then when not plugged in. Thank you.

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Thermistor on the sending unit is bad or wire is shorted.
 

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