are any of your warning lights coming on when your car stalls? I would suggest checking the battery and alternator as well---- but also check where you get your gas.... back when I was in high school I let this chick drive me to our SpringFling dance in her P.O.S. honda accord-- and it would stall out at HIGHWAY SPEEDS!, she was like "hee hee, dont worry my dad showed me what to do" and sure enough she tinkered under the hood, which enebaled us to drive an aditional 50 feet. I told her to pull into a gas station, which luckily was right by us, and told her to go ahead and fill up with Premium----- the rest of the trip, and back, was problem free. So try changing your octane and just see if that helps.
[FONT=arial narrow]2004 Liberty 4x4. [B]All Black[/B] Columbia Edition
Sunroof, 5 spoke Graphite wheels
[U]ADDED[/U] MAGNAFLOW stainless muffler, Turbolator exhaust tip, K&N drop-in, ECLIPSE CD5000 8V HeadUnit, Infinity KAPPA speakers (all w/ Dynamat) run off RF 800a4 amp, One 12" [COLOR=DarkRed][B]KICKER[/B] [/COLOR] [COLOR=Blue]Solo-Baric[/COLOR] L7 subwoofer - run off RF 500a2 amp, 2 AURA under-seat bass shakers using alpine Flex2 amp, Front/ rear Mopar window flares, front slush mats, eurostyle antenna, Power Horn with Uniden PA Mic, 3" Smittybilt step rails[/FONT]