Anyone have an idea what it wrong with my 2005 g35 coupe 5at car? The idle dips every 20-30 seconds only when in park/neutral. In drive the idle stabilizes and never dips.

I changed the throttle body, mass airflow sensor. Programmed the idle with consult II, reset the ECU. Nothing works.

Could it be caused by oil pooling problem? Did not check that.

Maybe someone thing with a transmission sensor? I have no error codes.

 

Im thinking it has to be the throttle body. Any updates?