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Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.

MPG getting worse

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Old Jan 17, 2012 | 03:38 PM
  #11  
ziggy21's Avatar
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Joined: Jan 2011
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From: FL
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Originally Posted by LOST
If it makes you feel better you can disconnect your battery overnight and your dash milage indicator will magically return to 18.8 MPG.

Not accurate of course but if your a visually inspired person it'll make you feel good for a few days.
Until it goes back down at which point you may feel worse than you did before it did the first time.

17 MPG is pretty darn good though. I hit single digits on 35" mud terrains. (hence the back to stock tires for now)
That cracked me up!! Maybe I'll give it a shot if it keeps dropping! Haha!

Thanks again for all the tips. Hopefully my tire pressure will do the trick.
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Old Jan 17, 2012 | 08:00 PM
  #12  
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Joined: Feb 2007
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From: 11 Western States
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You need to get out and clean that carbon buildup that occurs from city driving it has affected my jeep s since I got them. heat up the engine get some higher RPMs going and it will burn the carbon and mileage will go up idle will calm back down.
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Old Jan 18, 2012 | 04:52 PM
  #13  
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From: Alexandria, VA
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I had the same issue I just changed the air filter and it helped out a little.
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Old Jan 18, 2012 | 05:07 PM
  #14  
RDLNJK's Avatar
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Joined: Jul 2011
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From: Peterborough , Ontario
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Hook up to a good scan tool to check engine adaptability. Will tell u if tune up is needed.
Also, a good injector cleaner isn't a bad idea.
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