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check engine lite comes on after gas fill-up
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=16&t=45158
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Author:  AZjeepdog [ Mon Jul 20, 2009 1:24 pm ]
Post subject:  check engine lite comes on after gas fill-up

I have had this problem for over a year, dealer can not fix it. Almost every time I fill up the check engine light comes on. it will reset after about 5-8 engine on/off cycles. If I only put in 3/4 tank of gas, the lite does NOT come on. I do not have the code number, any help?
The gas cap has been replaced. The only code is U1411, can't fine anywhere. Auto Zone said to check with dealer.

Author:  WickedKJ [ Thu Jul 30, 2009 9:10 pm ]
Post subject: 

The only time I ever heard of that was due to a lose gas cap. But since you replaced yours.. I dunno

Author:  AZjeepdog [ Thu Jul 30, 2009 10:03 pm ]
Post subject:  check engine light after fill-up

I took the jeep to another dealer last week. They said they fixed a couple of loose grounds under the dash? I have fill the tank twice and the problem has NOT come back. I will keep my fingers crossed. It was happening 9 out of 10 times for the last year. The other dealer kept replacing parts that didn't fix anything.

Author:  WickedKJ [ Thu Jul 30, 2009 11:08 pm ]
Post subject: 

I understand I'm trying to find the clunking noise in the front end. :? Glad they fixed your problem for you.

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