I’d like to share my experience because I encountered a problem after cleaning the throttle body and MAF sensors on my 2007 g35s 6 speed. I disconnected the battery, removed the throttle body without disconnecting the connectors, moved the butterfly flap to get a good cleaning, didn’t change the gaskets, put everything back together and the idle was surging between 1600 and 2200 when I started the car. Doing the idle relearn about a hundred times did not help. Even smoke tested the intake for leaks. Connected the OBD scanner at my friends shop and attempted the relearn, however the car was not taking it. Finally went to a Nissan dealer for an ECM reflash and idle relearn. 3 hours and $283 later the problem was fixed. The idle is at 650 now and drives like new. I even stalled the car on my way home from the dealer. So if nothing seems to be helping the idle after cleaning the throttle body, it most likely needs an ECM reflash and idle relearn at the dealership. Hope this helps.

Now this is interesting, I’m still on day one after cleaning the TBs and MAF senors of my 2007 G35. The whole entire reason WHY I even bothered to cleaned the TBs was because the car was already idling high (bought it used at 122k miles) and after a bit of research it was recommended to clean the throttle bodies to get those low rpms back. After cleaning them and putting everything back together, the car was still idiling high. I took it for a drive. The car was not running properly and the SES light turned on after a few minutes. The car sorta jerked when I pressed and let go of the brakes. It’s kinda hard to describe but I just know it’s not running as it should. I’m a bit eager to try all the relearns I have read BUT theres one thing I have noticed while reading, 07 g35 owners have no luck in the idle relearns. Could it be because the 07 and lower have different instructions on doing a relearn? I mean it’s very similar to a G37. Anyways just spending all night reading all of these guys dealing with all these issues makes me want to not even try and just take it to my local infiniti dealership

How high was your car idling before you did the throttle cleaning? Is the car still idling as high as it was before the throttle cleaning or higher? What code do you get when you scan the car for the SES light?

Seems like you haven’t done the relearn process, which I’d suggest you do because the car isn’t going to learn the new idle by just driving it like other car brands. You might have to play with the relearn process and be patient since all the specifications have to be on point for it to work. In my case I tried the relearn hundreds of times myself, and eventually had to take it to the dealer to do the ECM update and the relearn. Won’t hurt to do the relearn yourself a few times, the worst that can happen is that it won’t work. If it works you’ll save yourself time and money because you won’t have to go to the dealer. If you do end up taking it to the dealer I’d suggest calling a Nissan dealer in your area first since they work on Infiniti’s too and their prices are lower.

I read every post in this thread and haven’t seen anyone complain about the car jerking. I have a jerk as well when I let go off the gas and the RPM’s jump up a little bit while the car jerks. The car jerks more noticeably when in lower gear and at higher RPM’s. At first I thought it was because of the ECM reflash but you didn’t get one and your car jerks too. However, the jerking might be due to faulty/damaged throttle bodies after reading about it on google but I’m not 100% sure.

Good luck with everything I know this is a huge pain in the *** and defintely give an update if you find anything out.

After more careful examination, I have finally put my finger on the issue. New day, and I warmed up the war and took it for another drive, my issue is the same one you are describing. When I let go off the gas, the car sorta jerks because the rpms bounce low then back up. Again, non of this was happening before I cleaned th throttle bodies. I want to be honest and say that maybe I did damage the TBs. I sprayed them directly with the recommended cleaner, had the battery unplugged, and even moved the butterfly valves a little to get deeper in there. I tried doing the relearn a couple times now and the idle is still high. I’m facr it’s at its highest when the car is in park, as soon as I put it in drive it goes down a bit but never lowers than 1000rpms. Usually the car idlesbetween 1600 and 2100.

I just tried doing the relearn a few times using these instructions, seems to me he was doing them with an older model car with no push to start button kinda letting me know they might now work with my 07 g35. I’m going to try it again several more times before I give up. And I don’t have a scanner and I did a bit of research and I’m probably going to buy one the veepeak Vp01. Anyways, I’m going to keep trying and will update if there’s any luck.

Thanks a lot for all these instructions, and I did realize that in those instructions there were a few relearns combined. I tried the idle air volume learning several times and I just can’t get it. I will give it some rest and try it again right now. I know I’m doing it wrong because the SES light starts blinking after like 4-5 seconds after holing the pedal down, which is supposed to be like at 10 seconds, then after 10 more seconds it should stop blinking to then turn the ignition on. However try as I might, I just think I’m not getting the timing correct or something else is up. I’m sure the battery is fine, got it replaced like a few weeks ago, the wheels are straight, elecetricle outputs such as the display and a/c are all
off, I warmed the car up fully and even took it for a drive so the coolant temperature is fine. The rpms never go below 1000 even after letting it sit for a while, it’s like 80 degrees Fahrenheit outside so it can’t be the weather. Did you ever get the Manuel relearn to work? I might just have to take it to a Nissan or Infiniti shop so they could do it for me