Transfer case in neutral?

 

Does the vehicle roll with the shifter in park and the xfer case not in neutral? Park is mechanical, so if it rolls then you are not connected somewhere versus a hydraulic or shifting issue. Count the splines on output shaft of the 91 transmission you just pulled out. They switched mid-year 1990, but a 1991 might have gotten a 21-spline. If it is a 21-spline then the 1995 transmission output shaft is not connected to the xfer case input even though it bolted up just fine.

 

Transmission went through all gears grinded when I go from reverse to park. The transmission i pulled out was a 23 spline that was the original transmission to the jeep. The 95 transmission i put in is a 21 spline I'm assuming. Have yet to take it back out due to weather. I went through all gears while in drive I could shift tcase through all gears no grinding or nothing so i figured tcase and trans wasnt connected some how. But idk what I could possibly do to make this work without ripping out new trans and tcase and getting a later model like a 93

 

And yes the jeep rolls while in park. That's what made me think tcase isnt attached to trans

 

91 and later is 23 spline........

 

I suspect that really wasn't an 1995 XJ AW4 he installed. The symptoms certainly sound like it was an earlier 21-spine. It's probably time to pull the xfer case off and look. I'd be curious to backprobe the rear output speed sensor on the transmission and look for a/c voltage with the engine running and in (D). That would tell you if the transmission output shaft is spinning.