So I finally got a Jeep! 94 YJ 4.0 inline 6. I knew 4WD wasn't working when I bought it. It has been owned by a woman since 94 and never off-roaded. That's about to change. The dash light does come on when put in 4hi and low, but doesn't engage. Axle does turn when placed in hi and low, but front wheels aren't turning. Took the CAD off today and checked vacuum lines, and all seems to be working fine. With CAD off, everything moves side to side when shifting into 4wd. Vacuum seems strong as well. Not sure what my next move should be? Any input is appreciated.......and thank you in advance!