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Old 04-03-2006, 06:27 PM   #1
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Exclamation gas guage/ float in tank

Alrighty,

So my in my 87' wrangler laredo (stock, besides carb) the gas gauage now only goes straight past full when turned on and doesnt move. I'am suspecting something to be wrong with the float in the tank.... Is their anyother way to get in the tank without droping the tank from underneath? Or has any one had this same problem and solved it? please help

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Old 04-03-2006, 06:49 PM   #2
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You might look behind the dash and check to make sure that everything is plugged in correctly. or I don't know if YJ's have a sending unit on them for the fuel gauge, but sounds a lot like something is bad. Gas tanks rarely have stuff go wrong with them.

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Old 04-04-2006, 08:18 PM   #3
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It was working for awhile today. Then it stopped again.
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Old 04-07-2006, 11:12 PM   #4
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Funny

Funny, my '87 does the same thing. It will start to drift toward half when it's plumb empty, but otherwise always reads full. I'm no wiring wizard, but at first glance, everythings cool. I had just decided it was an issue inside the tank (and I have no desire to drop it over such a little problem)
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Old 04-14-2006, 09:10 PM   #5
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my 89 does it also, i asked the same question on here and couldn't even get a response. Start small and go big. check the gauge then go to the unit in the tank. i think my sender is bad on mine but still not too sure.
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Old 04-14-2006, 10:26 PM   #6
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Common problem. I had te same problem.

The sender is bad. No way to fix or change it without dropping the tank. Its not really that tough, just run or siphon the gas out of it first.
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Old 04-14-2006, 10:37 PM   #7
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as soon as i find the a replacement window for my hartop, this will be my next project.

being 17 with limited $$$, isnt too fun
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Old 04-15-2006, 07:15 AM   #8
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Until you fix it, just fill up and use your trip meter...should at least get 150-200 miles between tanks.
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Old 04-15-2006, 07:32 AM   #9
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I've been playing it safe and only doing like 110miles on a tank
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Old 04-30-2006, 02:12 PM   #10
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I just bought a 90 YJ and noticed that my fuel guage reads incorrect. I thought I had a half a tank, but it wouldn't start the other day. Finally got it going and went to the gas station and she took 18 and change gallons... I've had TJ's in the past and never had a problem with the fuel guage... My guage won't go below half. It seems that my sending unit is bad. The Mitchell service manual says that at full the resistance between the 3 and 4 pins on the gauge cluster harness should read 88 ohms when full and 0 ohms when empty. I don't know where the level is the tank is at but the resistance reads 131 ohms right now. Hence why my guage reads past full.

My question is where can I get another sending unit... I've looked online and no one seems to have them . I'm hoping theres someone on here thats changed theirs out and can tell me where to find one.

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Old 05-15-2006, 12:23 AM   #11
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One other thing to look for are dents in your skid plate.
The stock plastic tank is straped to your thin stock skid plate.
Your fuel pump/float system is mounted to the top of your tank and hangs all the way to the bottom.
When you dent your skid plate it pushes your pump and float up.
Now you have a horizontal hour glass shaped tank. The float hangs in the well with fuel, but your pump sits up on the hump of the dent. Now you have a 1/4 tank of fuel that you can never use. So if you run out of fuel and have a 1/4 tank + on your gauge, look for dents.
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Old 05-15-2006, 03:59 PM   #12
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No, I don't any dents. I think the float is hung up or just rusted up. I'd like to take it out and check it out one of these days...
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Old 05-23-2006, 12:18 PM   #13
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Well........your not alone. Lost power the other day with 1/4tank of gas. No power , no acceleration, 2000rpm max
= NO gas. Put in $30.+ now it reads full + 1/4 So now I refuel
@ 1/4 tank. Dont see any dents in the skid plate. I guess its a JEEP THING, I dont understand. Dad is going to try some of his *&!!!$#$# ( highly technical jeep language) on it this weekend

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