2000 cherokee only going about 10 miles wheeling in 4 lo for about half the time and then just driving around town i have only gone 55 miles and used almost half a tank . And there is an evap code popping up. i just dont have the code number but what do you think it could be? and i have noticed sometime if its on an incline the jeep spudders for a min then goes back to normal. what could this be???:flamemad: