woke up this morning going to work warmed the car up and ready to go and the pos doesn't wanna go in any gear turned the car off and it goes in gear tried to crank the car and it jumped so i tried to start it and everything went to normal little hard to go in gear but tht's how it's been , i have a new 2001 tranny lsd with stainless lines,, anybody experienced that b4???

Sounds a lot like what's going on in this thread: http://forums.maxima.org/showthread.php?t=427207

Could be a broken throw out bearing, happened to me once, somebody pushed me to get the car moving and then I shoved it into first and drove it home without stopping. Had dropped and installed the tranny in about 6 hours I think I know I was done that night and all was good. Once inside, i found one of the tabs that hold the bearing of the fork had conveniently removed itself.

I believe the consensus of the other thread is a spring on the clutch popped out, preventing full disengagement.

damn the 2nd post on this type of situation, might be something in the air?

Have you check fluids to elimanate the slave or master cyclinder being a problematic source?

everything looks fine and the car hasn't done it since which worries me more

I having that problem now and now my maxima wont go any gear when the car is on but when off it goes in gears smoothly...I tried starting in in gear and it moves while starting

Sounds like the clutch is not disengaging fully. Since it is not doing it now I would think that you may be having a problem with something hydraulic. I am now worried because I just paid $925 for a 2001 LSD trans with 70K on it that will be at my job Tuesday for me to install. I really hope its not something with the transmission! Good Luck with getting this resolved!

your clutch is not disengaging.