Need some help on saving fuel on a 93 grand cherokee 4.0L what would be the best thing to get some more fuel econemy?

Take the lift off.. Use stock size tires.. Drive it like you want it to last 400K! Keep the rpm's down. Let it shift up to the next highest gear as quickly as you can..
I'm not too much in favor of tuneups.. On that vehicle a tune should last 75K without changing the economy.
I drive my Ranger like a very OLD lady and am getting near 20 on short around town drives.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />

Drop your speed, and shift later. I just, for the last tank, started doing this on my '99 XJ, and I went from an average of 20.8 MPG, to 22.2 MPG, granted this was just one tank, at 22.2, so I still will be continuing to try it and see how I do.

For the most part I have been shifting before 2200 RPM and keeping the jeep in as high of a gear as I can, and keep as little throttle in it as possible (As Jim puts it, driving like an old lady.), and I dropped my speed on the highway from 75 to 70 MPH. Yeah the speed limit is only 65 but everyone speeds here.

Sean