ok, just got a 96 country a month ago, 4.0,aw4, stock 3.55's,235/70/s. here's the ?. eng rpm 2000 @55mph, is this norm? want to lift and put on 31's, but want to be sure convertor is locking up. check for codes w/ cheap scan tool, none. can't moniter real time perametes( cheap scan tool). most cars i've driven you can feel the convertor lock up and see it on the tach, but not w/ this jeep. any response would be helpful. have seached all treads on this.