G37 & 370Z After Throttle Body Cleaning: Motorvate’s DIY Garage Ep.27

*** NOTE: If you have a 2007 G35 or 350z (engine: VQ35HR) there have been reports of an ECU update that is required to allow the idle air volume learning to work. Without the update, after cleaning the throttle you will have a high and unstable idle ***

In this episode of Motorvate’s DIY Garage, we show the 3 simple things you need to do after cleaning the throttle body on any late model Nissan or Infiniti with "drive by wire" or an electronic throttle.

After cleaning the throttle body, the engine idle may be higher than it should be. This is because the clean throttle body will flow more air and that results in a higher idle.

The fix is simple: Just follow the 3 steps and save yourself a trip to the dealer and save yourself some money.

[NG-VQVHR]

The stuff your making here may only appeal to a small audience of vq37vhr owners, but its some of the most valuable automotive content to those of us that can use it. Thanks for choosing to post these videos.

[Troph]

I don't even have a g37 or 370z, im a z31 owner, but it's ridiculous that this channel doesn't have more subs. you earned on from me for your straight to the point no BS tests.

[petemo]

What would take someone 25-30 minutes, Motorvate does it in less than 6. Well done! The gold-standard for making auto repair videos. Impressive once again.

[SlowGrandNational]

I came here just to hear what the reg idle of a g37 sounded like, plus the clicking I hear when I shut it off. Glad to know my G with now 180k miles is running as it should. That being said, I am subbing b/c this channel taught me more about my car in one video than the forums have in the past year I've owned the car!

[seanstratmoen]

Thanks for this. I think the most important part of this is step 2 as I was able to get the idle back to normal by just doing the first 2. I had done them all originally after I was getting rough idle and check engine light but it turned out to be because I forgot to clip one of the MAF sensors in all the way. After I fixed that, I tried doing them all again without cooling the engine and the idle was still stuck at 1k even after 30 miles of driving. I let it cool overnight and did the first 2 steps starting with a cold engine and the idle sorted itself on the 10 minute drive to prepare for step 3. I think it makes sense that if the ecu automatically opens the butterfly more as carbon builds up that as long as the close position is reset, it should correct itself in the opposite situation. I think the reason so many people say they don't need to do anything is because they end up doing step 2 without intentionally doing it since all it requires is a cold start and bringing then engine to normal temp.

[MIKEMARBLES]

Three years later and you're still saving the lives of VQ motors and there owners money! Thank you so much 👍🏽💪🏽🙏🏽

[richardlono]

Great video! cleaned my throttle bodies and the car went into limp mode. After performing the steps in this video the car is back to normal less one trip to the stealership.
Thanks !!!

[peteryoungblood]

Thank It worked for my G37. I replace the sparks plugs, the throttle and throttle body. It put my car in limp mode. After watching your video, I did it....it worked. Only issue now, it that my car is driving on high gear on the highway. I think it's the fuel cleaner that I put in the car. Will let you know later how it goes.

[PartyDownStairs]

Loving these g37 sport videos keep them coming !!

[nickbressie]

If you’re struggling to get the relearn done, do all three steps one after another. No pausing to watch the video lol. And make sure ALL electronics are unplugged. Even in the center console. Finally got my relearn done and it was obvious I did it correctly! Thank you for your help, random internet stranger!

[DoomFinger]

Hey I wanted to add one important step I found that finally made the idle reset work for me:

When I got to the step were I had to hold the gas pedal down, I RELEASED IT for about 10 seconds as soon as the service light began blinking. Then I held it down for another 10 seconds (it still continued to blinked). Finally I released it then started the engine.

That extra step of releasing for 10 sec then depressing for 10 sec is what finally reset my idle and turned off the service light. Without doing that the idle didnt reset.

This was in a 2012 G37xS 7 speed automatic.

Still your vid was awesome and helpful. Just wanted to share this tip.

[Visca_Motion_Pictures]

This worked! I did the idle air reset, immidiatly followed by the full ecu learning reset. (Do the same process as idle air, but as soon as the SES light begins to flash release the accelerator, then after 10 seconds hold it again. This will cause a more rapid flash and the SES will vanish

[aldo.z]

man, this video just perfect, straight to the point, well detailed and easy! thx man my car was stalling and rough idle but now with the throttle bodies cleaned and this vid, car running smooth like new

[Pantifo]

Easily the best relearn guide for these cars on YouTube. Thanks man!

[treygonzalez]

Excellent video! Used to complete TB cleaning and relearn on my '12 G37 with 90K. Paired with spark plug replacement videos from AlexKayRN and McGo101. Saved me hundreds of dollars, thanks so much for the help! Please do a DYI coolant change video.

[alexburr]

3 Infinitis later I come back every time to make sure I do it right ! Thanks again for doing this

[YTZack]

Great camera work and lighting. I recently picked up a clean 2007 g35s sedan with 50k miles and most of what you discuss translates to this model as well. Look forward to a battery swap when the time comes. Heard they are a bit of a pain.

[halaistrong]

Can confirm it works with vq35hr my idle was 1000-1500 after cleaning throttle bodies. Now it is idleing at 650rpm and cleared the service engine code !! Thank you worked on my past vq37hr as well !!!

[pajarogrande]

Great vid but i cant figure out how to get that timer on my G37 screen

[se]

I don't think I was able to get Throttle Valve Closed Position Leaning to run, as my coolant temperature only reached 82F overnight. However, the other two procedures worked and my idle no longer surges after TB cleaning. Awesome instructions! Thank you!