3.3 1992 gearbox sticks on second gear
 

Whats the problem sometimes gearbox sticks on second gear, when i turn ignition off and on it works finely.

theres about a dozen things it could be. but without getting codes out of the gearbox computer (TCM). it's all a shot in the dark.

So i have to go to diagnostics

not much choice, there's a lot of possible problems and since chrysler was kind enough to give code and data retreival for the transmission, why not take advantage of that? you could have over a dozen things cause your exact problem. wouldn't it make sense to get that down to a pinpoint cause?