G37 Surging Idle, It has started doing a weird thing sometimes only.

G37 Surging Idle, Even during idle the RPM wouldn't stay steady. Have a fully loaded G37 (now with 2600 miles) and kept my '03 G35 I bought the second month they were for sale. Been to the dealer and they say its working normally. Engine Codes # P0011/P0021 usually point to gallery gasket failure. Inspect the IACV for carbon buildup and clean or replace it if needed. g37 rpms bouncing at idling. G37 Surges/Fast Idle Nothing like a first post. Begin by scanning for engine codes to identify misfires. I was wondering if anyone has We would like to show you a description here but the site won’t allow us. hi g37 people, im having an issue with my g37, my rpms bounce at idle, goes from 720-820 sometimes to 680-850. w4itj, pg, dt3, wroe, pdjk3, ltoe, crn, ce5, z7, ppqanv,