What does it mean when your driving and it pops out of gear? This happens to my 5speed sometimes. It happens in fourth gear.

 

You might find some interesting reading in this thread on our local Maxima site here in Toronto, a member has been dealing with the very same issue by the sounds if it.

http://www.torontomaxima.com/forum/v...y+transmission

 

There's great info in that thread, but he's a 5 speed so it doesn't all apply to him, 5 speeds were linkage shifters, not cable shifters.

Read the thread that Ghost Linked you OP, just keep in mind, your car doesn't have cables. Most of the basic information applies though.

Then post back with specific symptoms.