It may be the knock sensor. It is located under your manifold. Its a small, 1 inch in diameter, circle on the front of the manifold. Take the top of the manifold off, (the black plastic part) the fuel rails, harnesses, exct, to get to it. Its about a 2 hour job to take it apart, and another 2 hours to put it back together. Fixed my 2000 maxima. She purrs like a kitten now!!!!

Hi!!!! I k ow this thread is very old, but i am having the same issue with mine. It doesnt spin my discs. Any disc, actually. It doesnt work with books on top of it, turning it on its side, ir any of that. I do feel, on the bottom of the ps1, that it appears the motor may be trying to operate, but isnt. There is a slight vibration on the very bottom when i first turn it on. Other than that, it pulls the memory card/cd player screen up, but doesnt go any further. Any help?