There's a wide range of things that could be causing this.
See what happens if you shift into second, then first. This should happen pretty easily.
You could try changing the trans fluid as well. This helps a lot of people with this issue.
Sometimes the shifter just needs an adjustment--this seems like a possible solution since you have issues with 1st and reverse.
You could be having issues due to a worn clutch, or insufficient fluid. Check that out.
There's a good chance though, that if you drive aggressively, you have damaged the synchro's. If that's the case, the 2nd to 1st trick will help for a while, but you may have to rebuild the trans eventually.
Finally, since your car is under warranty, you might just talk to Nissan about it.
|