Lately my 2000 Maxima is very sluggish or unresponsive but not consistently and usually improves after driving for a few minutes. Yesterday, however, it was a problem for an entire 1/2 hour trip in the cooler, rainy weather. Best guesses? Spark plugs, ignition coils?
Potential fuel pressure problem,are you current on your filter replacement
It is warming up? Is the thermostat stuck open?
How old are those plugs? If you don't remember, I would suggest it is time to replace them anyway, so why not start there. Have you had any CELs?
More research led me to a bad MAF sensor. I replaced it this weekend and problem is solved. Car’s performance is great again!