I have a 2002 Nissan Xterra 3.3 non supercharged. I have replaced distributor, set a timingcorrectly at 10 btdc new fuel filter new NKG factory OEM spark plugs new spark plug wires nkg new hitachi TPS which was calibrated correctly took the throttlebody off cleaned it completely put new gasket in between throttlebody as well. Just recently it started acting weird when I start the vehicle.I started up in the morning and the idle is all rough. it won’t let me give it gas. It warms up after a few minutes and it’s completely fine. I also checked my mass airflow sensor values and they were good no big spikes in voltage going up or down at  throttle please help I’m losing my mind thank you Scotty also there are no check engine lights on at all