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  1. J

    6 mpg on stock Cherokee 4.0

    I've been manually calculating it.
  2. J

    6 mpg on stock Cherokee 4.0

    I very well could be a vacuum issue. My check engine light comes on from time to time, when check it it says vacuum leak very small. It is idling okay right now though. Any thoughts on this from anyone would be great!
  3. J

    6 mpg on stock Cherokee 4.0

    No check engine light. I use it mostly to drive 10 minutes to and from work. It does seem to do much better on long trips. Usually about 15 to 17 mpg on the highway, but only 6 in town. It rolls on any slight grade, so i don't think it's brakes or bearings. It usually fires right up w/ no...
  4. J

    6 mpg on stock Cherokee 4.0

    I don't know whats going on but over the last 6 months or so my gas mileage has been dropping consistently. It's an all stock 2000 Cherokee w/ 155k. Aside from the mileage it runs fine. I made it 100 miles before having to fill up this time and thats driving extremely conservatively. I first...
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