I have just finished (?) the installation of my Revolution 3.1 (nee Terralows) in my '91 Trooper, manual tranny. Due mostly to my lack of motivation, I have been working on this periodically for 11 months.

I finally got everything buttoned up today and pulled the rig out of the garage. Everything works EXCEPT I can't move the lever into 4-lo. 2-hi works as does 4-hi.

I had tested everything prior to putting on the rear portion of the case, but neglected to test it after the case was re-installed.

I really don't know where to start.

Jim Paget
88 YJ with a few changes

www.rrr4x4.com