Show Joined Oct 3, 2012 · 14 Posts Joined May 13, 2011 · 108 Posts
The seal is probably broken. Go to AutoZone or some auto parts store and buy a new gas cap. Then after you put the new gas cap on, disconect the positive battery terminal for 5 mins to reset the light. This should fix your problem.
Joined Jul 20, 2010 · 2,085 Posts
According to the manual: gASCAP Joined Oct 3, 2012 · 14 Posts
Discussion Starter · #4 · Oct 9, 2012 Thanks. I'm probably gonna have to replace it. Joined Oct 9, 2012 · 70 Posts
It can also be a venting line going to a charcoal can or any of the lines in the evap system.A small crack can do it Joined Aug 23, 2012 · 97 Posts
i just bought the billett gas cap and had no probs.3 weeks later the gas cap light came on.the cap is new.i took it off and checked the seal.it was still correctly in place.the seal did show some flat areas.i ran my finger around the seal several times and tried to remove the flat areas.it was still on.i pulled into a auto zone and got a new cap.when i
cranked the jeep back up the light went out.i paid almost $70 for the billet cap and $17 for the new one.i will just hang on to it.any suggestions would be appreciated. Joined Jul 17, 2012 · 57 Posts
disconect the positive battery terminal for 5 mins to reset the light. This should fix your problem. Do not diconnect the positive cable. Always disconnect the negitive cable. Disconnecting the positive cable can cause a voltage spike that can be harmful to the PCM. Joined Oct 3, 2012 · 14 Posts
Discussion Starter · #8 · Oct 10, 2012 Also when I'm pumping gas I can't ever squeeze handle wide open. Will cut off so I always have to pump real slow. Gas cap cause that or venting more than likely? Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail. PLEASE DO NOT START SHOW & TELL TYPE THREADS IN THIS FORUM Sponsored by:  Gascap warningJK Enthusiast Thread Starter
Join Date: Jul 2011 Location: Sugar Grove, Illinois Posts: 488 Likes: 0 Received 0 Likes on 0 Posts His morning I got a gas cap warning on the dash. Checked gas cap and it is fine. Warning will not go away? JK Newbie
Join Date: Dec 2013 Location: NY Posts: 73 Likes: 0 Received 0 Likes on 0 Posts This is for stock jk folder. Maybe they can help there JK Jedi Master
Join Date: Feb 2008 Location: Maine Posts: 12,799 Likes: 0 If it was the gas cap, it will take a few trips for it to go away unless you clear the code with a code reader. There are a few things in addition to the gas cap that will bring on the gas cap warning. JK Enthusiast Thread Starter
Join Date: Jul 2011 Location: Sugar Grove, Illinois Posts: 488 Likes: 0 Received 0 Likes on 0 Posts Quote: Originally Posted by ronjenx If it was the gas cap, it will take a few trips for it to go away unless you clear the code with a code reader. There are a few things in addition to the gas cap that will bring on the gas cap warning. It's telling you there is a leak somewhere in the Evaporative Emissions System. If it detects a leak, and it happens to be soon after you filled the gas tank, it will assume you have not properly installed the gas cap, and will give you that warning. Should I be looking for a leak or wait a day or two? If there is a leak will I notice a difference in performance? JK Jedi Master
Join Date: Feb 2008 Location: Maine Posts: 12,799 Likes: 0 Running with an EVAP leak won't hurt anything that I know of. Go to an auto parts store that will check codes for free. See if there are any other codes. JK Enthusiast Thread Starter
Join Date: Jul 2011 Location: Sugar Grove, Illinois Posts: 488 Likes: 0 Received 0 Likes on 0 Posts Will be doing that tomorrow. Thank you! JK Freak
Join Date: Jan 2012 Location: chilliwack BC Posts: 910 Likes: 0 Received 1 Like on 1 Post Quote: Originally Posted by snytribe Will be doing that tomorrow. Thank you! Mine was an evap line leak. Bad gas caps arent uncommon either. JK Enthusiast
Join Date: Mar 2013 Location: Bothell,wa Posts: 280 Likes: 0 Received 0 Likes on 0 Posts I have got the same before push the right button on your dash should turn off. I have got this as well as a evap leak code now I did change my gas cap. JK Jedi Master
Join Date: Feb 2008 Location: Maine Posts: 12,799 Likes: 0 Quote: Originally Posted by G3N3RAL I have got the same before push the right button on your dash should turn off. What are you referring to? JK Freak
Join Date: Jan 2012 Location: chilliwack BC Posts: 910 Likes: 0 Received 1 Like on 1 Post
Quote: Originally Posted by ronjenx What are you referring to? The trip computer button by the speedo/tach.
Why does my jeep keep saying check gas cap?If your Check Fuel Cap light comes on, it may simply be that you blanked and forgot to put the cap back on the tank. Fuel cap is not securely fastened: The Check Fuel Cap light can come on even if the gas cap is on. If the fuel cap is not completely fastened, the vehicle will not recognize that the cap is on.
Why is my gas cap light on but my gas cap is on?What the fuel cap indicator means. Simply put, if your fuel cap light is on, it means that the computer has detected a leak in the system, typically from a loose gas cap. If this light comes on while driving, pull over in a safe spot and re-secure the cap.
Is it OK to drive with gas cap light on?Some modern cars even have a fuel cap light. If either light stays on after you replace your gas cap, don't worry. You may need to drive for a while, even 100 miles (160 kilometers) or so, before your car's computer senses that everything's OK and the light resets.
How do I get my gas cap light to go off?Simply remove your gas cap and put it back in place. Turn your car on, and the engine light may already be reset. If not, it might take a few cycles of turning your car off and on to make it reset. In some cases, it helps to drive around for a few miles, too.
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Gas cap light on jeep wrangler
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