As others have said clean the TB. I had the same problem and lived with it for a couple months. After some research and 1 hr of my labor solved it.

 

"yes, once I stop at a stoplight or something, after a couple seconds my idle will drop, car will shiver, and then go back up again. It only does it when the engine has been warmed up and does it more often when the A/C is on too." -Q8y Drifter

Hey Q8Y Drifter, I have the same exact problems as you. The dealer so far has performed a fuel injection flush and an "idle-re-learn". Neither have fixed the problem, did you ever try to clean your throttle body's yourself and see if that helped?

 

Not yet, I'm planning to do that though. Too busy with college these days

 

ok cool, well let me know how it goes. And Ill let you know what the dealer does this time around.

 

I got my car back from the dealer yesterday and they notified me that they performed an idle re-learn or "reset" and they checked the MAF Sensors and ran a test to see if there any codes being provided by the vehicles computer and the results were all negative. The car drives fine and there is no drop in the rpm nor is the idle rough. We'll see how long it lasts.

 

Sometimes everyones 'same exact problem' isn't the 'same exact problem'. Good luck with the fix, hope it stays as these things can be elusive.

 

@ Q8y: Anything yet bro? Did you get you TB checked? any update your car?

 

i'm actually interested in the TB cleaning. my car has been idling just above 100 so i replaced the pop charger with a brand new one and that hasn't helped. i've only felt the car shudder once and thats when i noticed i was idling extremely low...

 

Bahg35, no not yet

 

Interesting, my G37 has the same thing going on, rpm drops when in Neutral (at a stop light or so) the car doesn't stall though. Time to clean those throttle bodies.

Is that much of an issue though? I usually just adjust the idle myself manually

 

^^^ Don't know how the cleaned mine, but I think there are couple of steps that you have to go through after cleaning them.

Such Idle Air Volume Learning procedure and etc.

 

It seems like Uni and the exams are keeping you away from your car lol.

 

Notice that everyone is from GCC area having the same problem, and i wonder if all of them own a 2008 model.

 

I was saying the same thing to myself when Sam posted about it. We need to gather up and bring the issue to Infiniti HQ in the middle east. Screwing with big corporates is what I love doing most haha.

 

08 here as well.....