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Unread 09-05-2011, 10:56 AM   #1
salsomano1a
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1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Orlando, FL
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Fuel Gauge Problem

hi my fuel gauge when i turn right or left it goes to empty and then when the jeep its going straight it goes back to where it was, but its never steady, it this normal ?? thanks for all the help.

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Unread 09-05-2011, 10:59 AM   #2
G30SFF250
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1993 YJ Wrangler 
 
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This is odd!

I think it would more odd if it worked right.
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Unread 09-05-2011, 12:00 PM   #3
cstone94
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1995 YJ Wrangler 
 
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Its the gas sloshing around and moving the float. Its a jeep thing.
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Unread 09-05-2011, 01:32 PM   #4
salsomano1a
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what do you mean by sloshing around and moving the float?
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Unread 09-05-2011, 03:38 PM   #5
tdewit
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The tank's float movement is inline with the vehicle. It should show a different level going up and down hill, but left right
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Unread 09-05-2011, 08:13 PM   #6
cstone94
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Quote:
Originally Posted by salsomano1a View Post
what do you mean by sloshing around and moving the float?
The float on the sending unit, it floats on top of the gas which tells the sending unit how much fuel is there and then you read it on the gauge.
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Unread 09-05-2011, 09:30 PM   #7
Marky1
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How much work is there to fix or replace the sending unit ? My son's fuel gage is not working. thanks.
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Unread 09-06-2011, 07:14 AM   #8
tdewit
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Quote:
Originally Posted by Marky1 View Post
How much work is there to fix or replace the sending unit ? My son's fuel gage is not working. thanks.
No easyway out, you have to remove the gas tank completely. Once the tank is out, it's a couple of bolts to replace the sending unit.
Here's a write-up
http://www.jeepforum.com/forum/f12/1...moval-1167482/


Before putting the tank back, do this: http://www.jeepforum.com/forum/f12/9...panel-1195157/
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Unread 09-06-2011, 09:25 AM   #9
Que89YJ
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Hey Marky1 you should check the guage first. The YJ guages are known to be an issue as well as the sending unit.
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Unread 09-06-2011, 10:22 AM   #10
bharris68
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Starting point

http://www.jeepforum.com/forum/f12/r...er-how-991307/

Enjoy!
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Unread 09-06-2011, 08:37 PM   #11
MJDriver
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I'm not sure if this was in the write-up, but when I replaced my fuel pump I also cleaned the sending unit sensor:

Unfortunately, no picture, but it's easy to find. Where the swing arm for the float attaches to the assembly there will be a little box (about 1" long by 1/2" high). Gently pry open the box and you should see a crescent shaped coil of copper wire - this is where the signal is sent from.

Wearing rubber gloves, take the assembly someplace in the open, not near any plant or animal life, and spray the crescent with electrode cleaner (pick up at auto parts store of Home Depot). I used up almost a whole can, moving the arm and shooting everything from different directions.

The gauge still moves if I floor it, or turn hard, but that is to be expected. It no longer dances all over the place, or shows full when it's empty, and vice versa.

Good luck.
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