**Low Gas Mileage**
#1
JK Enthusiast
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Join Date: May 2008
Location: Russellville, arkansas
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**Low Gas Mileage**
So my jk went from 16 to 17 mpg to 12.2 mpg in a week. Anyone have any idea what it could be? I haven't changed anything other that a new winch and bumper. Seems to be running as normal. Bad gas? I'm no mechanic so any advice would be great.
Jeff
Jeff
#4
Have you done any recent work to it or had any recent servicing such as transmission or oil flushes? Have you verified the gas mileage with your odometer at a fillup? How many tanks of gas have you put in with this low mileage?
To start out, I'd check your air filter and PCV valve. If it's a more substantial problem, I'd take it to the dealer - it looks like it's still under warranty.
Micah
To start out, I'd check your air filter and PCV valve. If it's a more substantial problem, I'd take it to the dealer - it looks like it's still under warranty.
Micah
#6
JK Junkie
it's been cold in a lot of places, have you been letting it warm up for longer periods? Or sitting in more traffic than usual? have you checked you tire pressures?
just thoughts...
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#8
JK Freak
i for get what the % is but for every 100lbs added u loose gas milage, but i would not think the bumper and winch add enough to drop that much.
IMO i would start with these
edit: also check tire pressures. the cold will drop them.
for every 100 lbs is up to a 2% loss on mpg.
someone else mention earlier, if u are warming up longer periods, u are burning more gas
Last edited by captjay; 01-11-2010 at 03:46 PM.
#9
JK Super Freak
Join Date: Oct 2008
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dont even go by the computer do that math your self when you fill up
are you still stock? if not did you recalibrate your computer for the larger tire size?
are you still stock? if not did you recalibrate your computer for the larger tire size?