put a can of "gumount fuel injector clearner" in a 3/4 tank of gas and take it out to the inter state and run that bitch to clean the injectors that should help. I had the same problem now I have sweet idle rpm of 600 never drops under that.Altima94 said:Need Help with Altima. Low RPM's feels like the car hesitates. High RPM's its runs smooth. Had tune up , New plugs NGK platinum , had injectors cleaned , tranny fluid flushed out and cleaned , new fuel filter. Please help.