I decided to leave my car in garage for a month to go on vacation. Before leaving it sit in the garage I replaced spark plugs, fuel dampener cause it was leaking, clean the MAF sensors(lost a screw on one of them sadly ) and the throttle body. I never disconnected the throttle body and have moved the butterfly as carefully as i could. When i turned it on today the car would be in really high rev to warm up and when it's completely warmed up it revs to 2k then back down to 1k and continuously repeats itself. I've tried to do the relearning procedures many times but nothing and I have no clue if im doing it wrong. Just want to see if someone experienced this before and could share their knowledge. I have a video and post up on reddit to help describe what happening whenever i turn on the car and its warmed up. Link below to see the video. Thanks to whoever even read this!
https://www.reddit.com/r/infiniti/co...m_medium=web2x

 

Did you get the screw for the MAF that you lost? Did a quick google search and it looks like the MAF’s have 2 screws, however I seem to recall I only had 1 on my ‘09. (I’m away, can’t confirm ATM)

Also the relearns are sometimes tricky. Motorvate on YouTube made a great video explaining all the relearns you would want to do and exactly how to do them for pedal full release, TB closed relearn and idle air relearn. Ep.27, have a look and give those a shot. He does say sometimes on the early models like yours a reflash is needed, but give them a shot regardless

 

Yeah just noticed that my model might need an ECU update in order for the relearn to work. Gonna try to call the dealer in the morning. Also one of my MAF is sitting with 1 out of 2 screws in place. I wasn't able to retrieve the fallen screw

 

Screws you can buy a 10 pack at pepboys that are same pitch and length with phillips heads for 1.50. You need to do idle relearn since you moved the butterfly valves by either doing DIY or unplug battery for 45 mins

 

This doesn't work on the '07

The ECU update is the proper permanent fix, but the steps in the DIY must still be followed. With or without the update, the bigger problem will be keeping the coolant temperature in range as the tolerance is very small. For the '07 with the old software there is a way to get the relearn to work you just need to have the "high idle" below about 1100rpm (2000 rpm is too high). Need to disconnect two of the injectors to mechanically lower the idle and then do the relearn. You will need two pairs of very long pliers and steady hands and will have to be very careful not to damage the injector clips/wires so try it at your own risk.

I believe you can also mail your ECU to Eugene (user bythebay on here) at his shop Enthusiast Auto Care and he will update it and mail it back.

 

Mine did the exact same thing after cleaning MAFs and TBs because I didn't push in one of the clips to the MAFs all the way. Once I clicked it in the revs remained constant (but high) around 1.5k at idle until the car went through the relearn. I did all of the procedures but it didn't "take" until the day after. My guess is that the car has to get completely cool and then back to warm before it can actually relearn.