I can tell you I was having the same hard type slip bang shift from 1st to 2nd gear. I went and picked up the improved speed sensor and installed it today on my 95 Mystique. What a huge differance it makes now...smooth as a kitten shifts!!! really suprised me the improvement it made.
Be cautous taking it out...just spray it good with wd40 or something, grab the plug end with a vise grip and twist it side to side, slowly, slowly and pulling out pressure at same time. With taking the extra time, I got it out without
breaking it off. Tapped the new one in with the handle side of a plastic screwdriver and hammer slowly and oiled it and it was done in about 15mins, in and out. I thought my tranny was on its way out...but yep, that baby fixed my problems for sure!
