YJ Fuel Gauge - JeepForum.com
 
LinkBack Thread Tools
post #1 of 5 Old 07-18-2010, 09:10 PM Thread Starter
Josh71NC
Registered User
1992 YJ Wrangler 
 
Join Date: Apr 2010
Location: Franklin
Posts: 11
YJ Fuel Gauge

Like most of you fellow YJ owners, my fuel gauge is spotty at best. When I fill the jeep up it has no problem reading a full tank, the gauge reads great until I get around a quarter of a tank. Once at a quarter of a tank, it randomly goes between three quarters and a half tank reading until I get pissed off and fill it up again. Its not a huge deal as I've dealing with it for a while now and I'm used to putting gas in nearly everyday. But as soon as I let my wife drive it alone, low and behold she calls me on the side of the road saying that my jeep is broke down... Empty tank... women never learn...

Anyway, what's the best way to diagnose this problem without yanking the whole *** end out of my jeep?

Many Thanks


~~JOSH~~ []lllll[]
Josh71NC is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 07-19-2010, 04:55 AM
88YJGuy
Registered User
1988 YJ Wrangler 
 
Join Date: Oct 2009
Location: NH
Posts: 28
Maybe pull the gauge cluster out and clean the connections good, might help.
I did this to mine last weekend. Took the nut off and pulled the connection plug and sprayed some contact cleaner in the gauge holes. The copper traces on the mylar wiring conduit were a little oxidized too.

Gauge still bounces around a little, but I ran it down until it was bouncing around indicating (on average between minor swings) a 1/4 tank left- went to get gas and it took 12 gallons to fill it- so it seemed to be working in a general sense.

Maybe a better cleaning would've helped, as I was more concentrated on fixing the temp gauge, and just getting the gas gauge to read anything at all-it was stuck reading "E" all the time.

88 YJ (Red) 2.5L, AX-5, NP231, Dana30/35 Posi-Lok, 4" RC Suspension, 1" Daystar Body, 33X12.50/15 BFG KM2's, Schrockworks Sliders. Vortec 5.3/4L60 conversion in the works.
88YJGuy is offline  
post #3 of 5 Old 07-19-2010, 06:51 AM
Roadyy
Registered User
1994 YJ Wrangler 
 
Join Date: Mar 2010
Location: Down South
Posts: 1,591
If you are going to clean the card in the back of the cluster its best to take it completely off of the cluster and carefully straighten it out and clean it with alcohol and a q-tip and a pencil eraser works good too. Do not rub very hard causing damage to the coating. While you are at it go ahead and clean the center cluster card aswell to save having to do it later.
Roadyy is offline  
post #4 of 5 Old 07-19-2010, 06:59 AM
Poke
runtime error = 0
 
Poke's Avatar
2015 YJ Wrangler 
 
Join Date: May 2008
Posts: 3,096
Quote:
Originally Posted by Josh71NC View Post
Like most of you fellow YJ owners, my fuel gauge is spotty at best. When I fill the jeep up it has no problem reading a full tank, the gauge reads great until I get around a quarter of a tank. Once at a quarter of a tank, it randomly goes between three quarters and a half tank reading until I get pissed off and fill it up again. Its not a huge deal as I've dealing with it for a while now and I'm used to putting gas in nearly everyday. But as soon as I let my wife drive it alone, low and behold she calls me on the side of the road saying that my jeep is broke down... Empty tank... women never learn...

Anyway, what's the best way to diagnose this problem without yanking the whole *** end out of my jeep?

Many Thanks
I fixed mine with a new sending until. its only 7 bolts to drop the tank. happy to walk you through it if you want.

Quote:
Originally Posted by ionakana
don't post threads that poke Poke!
Poke is offline  
post #5 of 5 Old 07-19-2010, 02:55 PM
Jeremy93yj
Registered User
1993 YJ Wrangler 
 
Join Date: Apr 2010
Location: Ocala, FL
Posts: 172
I fixed mine by pulling the sending unit and opening the small brown box that the float arm goes into. I cleaned the contacts inside then re-bent the tiny contact arm until the contact was touching through its entire arc of movement. You can test it with it out of the tank. Plug the sending unit into the wiring harness, turn on the key, and see the gas gauge move while you move the float arm. It took some trial and error to get the little contact arm bent just right, but I'm glad I did it. While you're in there, do the 20 gallon tank mod as well. Takes 15 seconds to do and makes life a bit easier. Good luck!
Jeremy93yj is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Fuel Sending unit or fuel gauge? NHfireLJ YJ Wrangler Technical Forum 17 01-22-2010 06:41 PM
1998 TJ wrangler - fuel pump sending unit / fuel gauge drummerchukb1 TJ Wrangler Technical Forum 3 05-11-2009 04:42 PM
98 Sahara no start no fuel gauge no volt gauge.Cps already changed... CrazyRobCustoms TJ Wrangler Technical Forum 5 03-25-2009 11:52 AM
Fuel gauge reading fuel all the time Sandbagger66 YJ Wrangler Technical Forum 6 04-30-2006 08:07 PM
Oil Pressure Gauge and Fuel Gauge problems phattdraggon YJ Wrangler Technical Forum 5 05-11-2004 03:12 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome