I have a 02 Maxima automatic at idle at stop lights it sputters like it's ready to cut off like a misfire and when I floor it it sputters and struggles to get up to speed after 2500 rpm I've replaced spark plugs air filter fuel filter coil packs and clean the injectors but the service engine soon light will not go off as well if anyone has any input please let me know

 

sounds like you have a vacuum leak is there hissing from the engine bay