Hello all. I am having an issue with my 2007 Infiniti G35S Sedan (155k) where after a cold start, most noticeable the first start of the day, where the car will sputter during forward acceleration. Its only really noticeable at slower speed / when I'm only lightly pushing on the gas. It will go no problem, especially if I give it more gas, but if I'm just kind of touching the gas to accelerate at a slower pace, it kind of putts along for a brief moment (only a few seconds). After the car has warmed up and been driven for a bit, it goes away. Any thoughts on what I can check or have fixed? Thank you for any insight you may be able to provide.

 

Cleaning throttle bodies might help.

 

I had the same issue and I ended up cleaning the entire intake tract and put in new filters and it did not fix the issue.

I ended up finding a TSB somewhere on the net regarding that issue and I took my car to the Infiniti dealership and gave em the number and they flashed my ECU and fixed the issue.

Didn't take more than 10 minute and they only charged me $40.

Issue has never returned.

_Michael