I have a 95 Altima GXE with manual trans.
I have only one problem with it.  When I start accelerating, seems like
the car looses power of fraction of a second and then gains it back.  So,
if I was to press a gas pedal it would start accelerating, then it feels
like the power gets lost and then get a burst of of power again.  The car
idles steady with no flactuations, once I have it running on the highway
on at a constant speed in any gear there is no problem and runs good. It
is only when accelerating when I get this problem.  The dealer told me it
might have been the oxygen sensor, so I changed the one in the manifold.
Still doing the same thing.  I am not too eager to change the one at
catalyst converter since it is triple the price. Anybody had the same
problem ? Any suggestions ? Thanks in advance.