Gas milage v. Fuel gauge - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Build Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 05-07-2013, 10:27 AM   #1
Siffo3012's Avatar
Join Date: Jan 2012
Posts: 96
Gas milage v. Fuel gauge

I haven't done anything new to the jeep and my fuel gauge is dropping way faster compared to what it usually does... I'm resetting the trip meter at each fill up, but won't be certain that it is a gas milage issue or fuel gauge malfunction issue for a few days/weeks yet.

My question:
People have been commenting about incorrect yj fuel gauge; what are these typical problems with fuel gauge readings?

If not fuel gauge and realizing a drop in gas milage (16 mpg - 12 mpg), but jeep still runs great (4.0 Manual with fuel injection). What could be causing the drop?

Siffo3012 is offline   Quote Quick Reply
Old 05-07-2013, 10:51 AM   #2
Beachcruiser's Avatar
Join Date: Feb 2012
Location: Raleigh, NC
Posts: 429
When the sender is going out, it can cause a fast drop between full & 1/4 tank. Mine drops like a rock.

If you actually experience a drastic drop in MPG (but it still runs fine), my first guess would be O2 sensor.

Are you showing any error codes?
Beachcruiser is offline   Quote Quick Reply

Quick Reply

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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 email 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

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 Off
Refbacks are Off

Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:38 AM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC