Why I can't tell you, but I'd suggest you clean the throttle body (don't let anyone tell you you can't do that on this car) and then reset the base idle following the correct SP. This is likely to help.
Your car might hesitate under acceleration when the weather is wet because your tires are worn or because there is water in the gas. You might also have a problem with the fuel injectors.
Probably needs a carb rebuild, specifically the accelerator pump circuit.
LOOK ON MY BIO PAGE....UNDER MAXIMA INFO...............BUDDY MACK..
on a 95 maxima the spark plugs are under the manifold where you put your oil in you have to use a Allen key to unscrew then take off three are under there
Under throttle body
Under the dashboard
under dash
its located under the center of the dash
Top of the transmission, under the air intake.
under the coil
sounds like you are talking about the y pipe
The 2005 Nissan Maxima OBD 2 port is under driver side dash below steering column