Fuel Guage not working - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > Fuel Guage not working

BDS 4-1/2" Suspension Lift Kit - Jeep Wrangler YJRough Country Lift Kits and Parts!FREE, FREE, FREE EVENT!! Save big on Lockers now till Apri

Unread 01-22-2010, 05:25 AM   #1
Registered User
1984 CJ7 
Join Date: Nov 2006
Location: Gig Harbor, WA
Posts: 163
Fuel Guage not working

Hi Everyone,

Sorry for the 2nd post I had another question for you. I have a 1984 jeep cj7 4cyl t-5. Recently my fuel guage quit working so i've been keeping track by writting my mileage down. How can i fix it? Also if it's the sending unit is it worth just intalling a new tank? In the next few months i'm planning on putting in a amc 360 and I could just put a new fuel tank in now but I wasn't planning on. Is it difficult to install? What size should I get if it's that route?



Cpolinsky is offline   Reply With Quote Quick reply to this message
Unread 01-22-2010, 05:32 AM   #2
Image Glassworks, Inc.
mmerlina's Avatar
1986 CJ7 
Join Date: Mar 2007
Location: Danvers, MA
Posts: 1,668
I believe a common problem is that the ground wire for the sending unit rots away. There's really no way to get to it without dropping the tank.

It would probably be worth it to change the sending unit, but unless there's a leak or something else wrong with the tank I don't see the point in changing that... when I did mine, the tubing that feeds the fuel lines was also on the verge of falling apart, so I just replaced the entire unit.

Here is a link to also help diagnose what may not be working.. scroll down to the "Fuel and Temperature Gauges" section..

Jeep CJ Gauge & Sender Diagnostics

1986 Jeep CJ7 (photos)
Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
mmerlina is offline   Reply With Quote Quick reply to this message

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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.

Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.