'93 YJ Fuel Gauge Troubles

[epfdfirechief]

Hey guys I am new here. I have owned my '93 YJ for 4 years now. Since day 1 I have had this pesky fuel gauge problem. Fuel gauge works fine until 1/2 tank. Then it appears to "hang" at 1/2. This gets really grates my OCD. I am going to try and drop the tank to do further investigation. Any and all help would be greatly appreciated. Thank you all in advance for your help in this matter.

 

[steady.foot]

My gauge has been quirky since i bought it too. It hangs at full till it's almost empty and then it moves down a little. I've learned to live with it. I probably should have fixed it when i had the tub off, But i didn't. On one old jeep that i had i cut a 3 sided square just above the sending unit and folded it up to get to it.

 

[superj]

Before you drop the tank, take the gage cluster out and clean the contacts and wires first. Then make sure the grounds are good. That fixed mine when I first got it

 

[Tison78_CJ5]

First get a good light, and look at the gauge closely. If the little pivot for the pointer is white, it is a cheap "China" gauge.
The gas, and temperature gauges are built using heater wire wound around a bimetal spring, that flexes when heated.
When the plastic part gets hot it melts.
Mine is a '78 so don't know it yours works the same as mine, but if it does, it can give many hours of lost sleep.
I did fix mine, but I opted to completely redesign mine, as that is what I did before retirement.
You may find some aid in my post "fuel and temperature gauge nightmares"
Good luck, I have a lot of information about the fuel, and temp. wiring.