G37 & 370Z After Throttle Body Cleaning: Motorvate’s DIY Garage Ep.27
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- Опубліковано 11 лип 2024
- ** 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. - Навчання та стиль
![NISSAN Electronic Throttle Body [ETB] | EASY RE-LEARN Procedure](/img/n.gif)
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.
Thanks for your kind words!
To me the G37/370 is a wonderful platform and I want to help people save some money and learn how to "DIY" :)
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!
Hey Jesse Stapleton,
Wow, thanks for the kind words!
You might want to have a quick look at my other channel that uses those cheap OBD scanners and apps to read troubles codes and much more: ua-cam.com/users/obd4everyone
Easily the best relearn guide for these cars on UA-cam. Thanks man!
I appreciate that!
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.
Hey Troph2,
Thanks for your kind words!
I am happy with the growth of my subs, of course more is always better :)
There are some very interesting episodes in pre-production right now: I will be going back to the dyno for an air filter retest (including a dyno run without any filters) and TPMS troubleshooting tips.
@@MotorvateDIY seriously yes thank you for the no bullshit quick to the point editing. This was a great video. Subbed, cheers!
Hey Hexecutable,
Thank you for subbing!
@@MotorvateDIY have you ever done gallery gaskets and timing chain/tensioner replacement?
Luckily, I have not needed to :)
At 80C/176F I typically have 20-22 psi engine oil pressure.
So far... so good!
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.
Hey petemo94,
Thanks for your kind words. Short and sweet is always my goal :)
It’s called editing my dude
No he didn’t lol
Or how they said in the marine corps “ breaking it down Barney style.”
4:30 4:30
Loving these g37 sport videos keep them coming !!
Hey ObeyNigga,
That's my plan :) The next one should be out in a week or so.
Just used this to reset my Skyline 370GT. I got it right the second time, as you said, follow steps exactly, i must have been slightly out the 1st time. Thanks!!!!
Glad it helped
Love this channel brings a tear to my eye.
Interesting.... but why a tear?
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.
Hey Sean Stratmoen,
I agree with what you are saying.
However, it still is a good ideal to finish with the "idle air volume learning" so the ECU learns any change to the air flow when at idle.
If I had a misfire and changed a plug and coil pack do you think step 3 is necessary? Right now it idle at 800 after warming up.
But above one and lil higher than it did before. I should be good with the first 2 right?
If your idle is stable, then I think you are good to go.
Three years later and you're still saving the lives of VQ motors and there owners money! Thank you so much 👍🏽💪🏽🙏🏽
Wow... thanks for those kind words!!!
AND thanks for subbing!
I am way behind in getting videos out, but have been doing a lot of development of "things" us VQ folks need...
for example:
• 20 second install oil temp gauge
• Bluetooth oil pressure gauge, 90% less wiring and 2 minute install
• Real time tire pressure display
• 20 second automatic transmission fluid temp gauge
and a few others under development as I type this!
Thank you so much for the video! You showed me how to do something my mechanic didn't even do after replacing my throttle body! Was suffering power loss n high ass idle. Followed the video n shes purrin now! 03 G35 6MT 🔥🙏🏾
Mechanics have a tough job... each manufacture can have a different procedure for the same part replacement.
Anyways, I'm really glad the video helped.
Great advice, instructions and the best productions . Cleaned and set everything . Noticed a slightly lower idle and crisper response. Thank you!
Thanks for the feedback!
This was a fantastic how-to. Thank you for this!
Hey Derek Palmer,
Thank you and I am glad you liked it :)
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.
Glad you it helped. Last fall I did a multi-camera shoot of spark plug replacement and coolant replacement. It is in the queue to get edited.
Also, I changed the coolant and need to look at the corrupted video to see what I can salvage.
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
I'm glad the video helped!
This worked on my 2004 G35 Coupe thanks a lot!!!
Hey Giovanni Rodriguez,
Excellent!! Another satisfied customer :)
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.
Hey Zack Fanning,
Thanks for your kind words. This episode was one of the more difficult to shoot since the throttle body is so low, and your hands block the camera view. I shot the throttle body cleaning about 4 times to get it figured out.
Changing the battery is on the schedule for this year. Last year I shot a video on changing the battery, but didn't like it, so I will shoot it again this spring/summer :)
Is your battery located at the top right of the firewall inside a little compartment with a pop off lid?
If so, then it's actually not that bad. You pop off the pop rivets that hold the compartment in place and then remove the whole compartment. After that you un-do the battery and pull it out. Installation is the reverse.
Invest in replacement pop rivets because they will break off on older cars.
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 !!!
Hey richardlono1,
I'm glad to hear you fixed the issue :)
Thanks for your comment!
when your car went into limp mode did the vdc and slip sensor turned on while driving and the car slowed down?
That's fucked bro lol smh..
how did you do the third step when in limp mode?
@@davidkngdavid5624 did you ever find what to do? Juat happened to me
Thank you for the super informative video!!! Great to see such professional looking content done so clean and concise!!!
I'm glad you liked it! Thanks for the comment.
Great video, at first I thought I didn’t need to follow these steps but I noticed that when braking my idle reved from 1000 to 1500 while driving. And also while parked when reving it didn’t settle so easily
Hey Joel Rojas,
Thanks for you kind words. You could see where the car settles to for a few days, or just follow the 3 steps in the video.
If you have a bluetooth OBD scanner and a Android phone/tablet you can use a free app to do the idle air volume learning:
ua-cam.com/video/OiB9txECWB0/v-deo.html&t
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.
Hey DoomFinger511,
Thank you for sharing this tip, I really appreciate it!!
It is nice to have a few different procedures to try for the idle air volume learning. :)
+1 here. Had to do the same thing on my 2009 EX35 to remove the check engine light.
Hey LegenDario Ciroc,
Thanks for sharing your experience :)
So if it doesn’t work with the one in the video can I retry with your method ? Or can that mess up the car
Feel free to try that method... You can't hurt anything doing that :)
Really enjoy your videos as I just bought a G37 S, you seem to know a lot about these cars,do you have a shop in T.O.?
Hey Bigdog Bulldog,
I'm glad you enjoy the videos, thanks for watching them :)
It would be nice to have a shop, but I don't.
"Motorvate's DIY Garage" is the typical 2 car garage attached to my house.
I am not a licensed mechanic... I am just a guy into cars and video. :)
I just noticed that I didn't answer your question...
I don't have a shop, I am just a simple DIYer and work at home :)
This is absolutely the best video/explanation I have yet to see on the internet I did spark plugs on 2011 EX35 and I removed the entire throttle bodies to clean them up and to have better access to the spark plugs. Once plugged everything back on I was getting super high idle, Multiple codes P0603 and P0507 which is throttle body and car was not driving right (studdering/bogging) as I accelerate. So I cleared all the codes using scanner and also performed one of those 3 found some video on UA-cam explaining how to reset ECU… my idle was corrected some what but still drives like absolute crap. I will be trying this later on today but I am a little confused on step2, so all what I need to do is turn it on and let it get to operating temperature? Hope to hear back from you today again great super great videos glad I came across your page
Step 2 is a little unusual, but you are correct. Just let it warm up.
It can be tricky to get the "idle air volume learning" to run to completion. Some have commented that it took them up to 20 times.
If you have an Android device and a Bluetooth OBD scanner (like an ELM327) you can use this free app to do the idle re-learn:
Quick & Easy Idle Air Volume Learning: Motorvate's DIY Garage Ep.28
ua-cam.com/video/OiB9txECWB0/v-deo.html
Good luck!
Thanks for your videos. After already replacing both my MAF sensors on my 2014 370z I cleaned my Throttle bodies and did this ecu process and everything seems to be working well. I just need to clear the code and hope it doesn't come back. Thanks!
Hey Digital Man,
Thanks for you comment and I'm glad the video was helpful :)
Wow I'm jealous of your uncracked dash
Hey DanielDaniel1,
Is it common for the dash to crack on the G37?
If so, I wonder if that is more common in the more southern states...
@@MotorvateDIY 07 g35s here and the cracking has been relentless in 2 years of covered parking during the day and not using any dash conditioner. Also diligently use a sun shade and leave windows cracked to no avail
Hey DanielDaniel1,
Wow, I didn't know that... I hope it isn't a future issue for the G37.
Great vid but i cant figure out how to get that timer on my G37 screen
Hey Richard Manzanarez,
Thanks for the chuckle :)
🤣🤪
Wow I’m so thankful I was just about to buy new throttle body’s thinking that was the issue but I decided to try this out before I bought anything and it actually fixed my problem my car would even kick really bad and I kept pulling out the throttle body’s thinking I had to clean them better but I guess not thank you 🙏
Hey Juan,
Comments like this make my day! Thanks for letting me know.
THANK YOU SOOOO MUCH! This was extremely helpful! God bless! Hope you and your family are safe. :)
Hey xvolcomx19,
I'm glad you found it helpful :)
This is the best video regarding this subject THANK YOU and you gained a new subscriber.
Awesome... Thanks for subbing!
For the making of that video, I shot it 5 or 6 times to get the right camera angle... and that is why I ended up cleaning a clean throttle body!
@@MotorvateDIY Thank you for that dedication in creating this great video to help me fix my car :)
Looking back, this really came in handy back in 2018 haha thanks again 🙏🏽
Hey, thank for the comment! I'm glad it was helpful.
oh man..this 3 step procedure totally work on my toyota vios NCP150 for post cleaning idle learning. Good tutorial
Hey Halimi Rasli,
Really???? This Nissan/Infiniti procedure worked on your Toyota?
Nice!
Motorvate DIY ....idk, but i do follow the step respectively and eventually the idle going back to normal with smaller throttle opening percent ( i got external meter collect real time reading from obd2) and look like it work well
Awesome to know this info , I cleaned my throttle bodies 3 months ago! Thank you
Anytime :)
I have a question my friend. I did throttle cleaning but I don’t have a high idle. The tack is at .7 rpm. Do I still need to do relearn? Or I don’t
Hey Matt Jay626,
If your idle is normal, then all is good.
However, it is not a bad idea to do the three procedures in the video, but nothing bad will happen if you don't.
Motorvate DIY ok nice to be sure. I appreciate you! Thank you for you time and reply. My car is my life. I have an 08 G35s sedan 6 speed. K&n typhoon CAI, Stillen high flow cats, Megan racing y-pipe, and muff delete, car purrrsss and runs awesome even with no tune! I purchased coilovers /rear camber arms and now waiting to install ASAP. Everyone says my car sounds really exotic..I’m stoked everyday driving my car :) soon I want to dyno cuz I’m curious to view my whp numbers. Is there any other mods you recommend? Hope your having a great start to the new year!
Hey Matt Jay626,
Sounds like you have all the good bolt on mods.
Have you ever thought about a high performance driving school? They are a lot of fun and you won't believe what you can learn in a day AND it is a safe place to drive fast!
Thanks for your comment.... now go for a drive and enjoy your car :)
This is the best video out there. Thanks!
Wow, thanks!
Hey ! Not on UA-cam much but I’m getting in touch in regards to the 350z ls1 cluster issue we discussed.
It was nice chatting and meeting you !
Cheers 👍
Hey Jahaan,
Email received and replied to :)
Great video as always! Hope we get a coolant flush DIY video soon!
Hey Daniel P,
Thanks and yes I have not forgotten about the coolant change video. It will be shot late spring / early summer and I hope to have add it 2-3 weeks after that.
@@MotorvateDIY hi. Just checking, have you done a coolant flush DIY? Couldnt find the vid
Thanks for sharing brother your method to relearn it’s one of the best.
Thank you!
3 Infinitis later I come back every time to make sure I do it right ! Thanks again for doing this
Thanks for thinking of the channel and popping back!
Holy crap I'm seriously so happy this time! It actually worked! I'm not sure what was different this time but the relearn worked!
I don't really know why, but it can be tricky to get this to work.
I'm glad you got it!
@Motorvate DIY I am to! The mechanics kept saying it wouldn't do/failed the process 🤔 so I tried it a few hours after I got home..my car still dips when accelerating from 3rd to 4th though..possibly a vacuum leak!
You my Goat Big G !!! Appreciate the help
I'm glad it worked for you :)
Thank you for making such an easy video to follow. It helped a lot
Glad it was helpful!
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
Awesome! You should now have a stable and smooth idle.... AND t he cruise control will operate smoother now )
@@MotorvateDIY thanks a lot. I was frustrated when the light came back on immidiatly, but resetting the idle and ecu immidiatly after cleared it all. Slowly fixing all the things that the previous owner gave up on. Next is window memory
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 !!!
Thanks for the comment and feedback!
Same care with test pipes check engine light only blinks 5 times instead of 8 is that a minor cause or not resetting ecu
Before you cleaner then was the code about the throttle bodies? I cleaned it and tried the procedure but the code won’t go away
Thank you!!!!!! 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.
Glad to heat that!|
I don't think fuel cleaner would change anything in the transmission.... but let me know what you figure out :)
@@MotorvateDIY is it normal to go 75 MPH at 3k RPM? My car is an automatic, I am under the impression that the gear should drop to 2k at 75 or 80?
On the G37, with the 7 speed automatic trans and stock sized wheels, at 75 MPH and in 7th gear, the engine RPM should be just over 2600 RPM.
If you are at 3,000 RPM at 75 MPH your transmission might be in 5th gear.
Just count the shifts as your accelerate up to 75 MPH to double check what gear the auto trans is in.
I’ve been trying to do it is the correct way for two weeks now and I find your channel Thank you very much that was extremely helpful
Hey jamrock dan_data,
It can be difficult to get the timing just right...
I am glad you found this episode helpful :)
Also if you have a bluetooth OBD scanner you can use a free app to perform the
idle volume air learn: ua-cam.com/video/OiB9txECWB0/v-deo.html
Just discovered you I’m a fan of your work now.
Hey CJ Walk,
I'm glad you found me and I hope you subscribed so you don't miss out on the next episode that I am working on right now. :)
Already subscribed keep up the good content.
Hey CJ Walk,
I will do my best :)
Thanks for providing such a useful and professional tips and guidance 🙏 👍
My pleasure 😊
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!
I'm glad the video helped!
Always the best informative videos!
Hey itsmistersmoke,
Thanks for the kind words!
Could you possibly do a video for air/fuel ratio relearn?
Hey itsmistersmoke,
Do you mean the "MIXTURE RATIO SELF-LEARNING VALUE CLEAR"?
If so, yes I can add that to the production schedule for this year.
If that's the one that corrects if the car runs too lean then yes!
Awesome Tutorial, I just finished cleaning both of throttle bodies and mass airflow sensor‘s. One mishap was the toothbrush broke and I had to account for all the missing bristles. Luckily enough none went in far.
So on the second throttlebody I just removed it completely and there was enough play to clean it effectively with a rag and lots of fluid.
Fortunately enough it idled very funny at first at 1100
Then I turn the car off waited a little bit it through a check engine light up so I then unplug the negative terminal again. Then the car went to 700 by itself. So no 3 steps, guess I’m just lucky...
Hey Ps4 Ps4,
If you clean the throttle body, is is a good idea to do the idle air volume learning. By removing the dirt around the edge of the throttle plate, you change the air flow characteristics. The idle air volume learning allows the engine control module to re-learn the new characteristics of the clean throttle body.
In your case, it seems like the throttle body might not of been very dirty and the engine control module was able compensate or didn't notice any change.
So.... if your idle is normal, it looks like you are good to go :)
Last night I drove home my skyline 370GT which is the same as G37 infiniti, I accidentally switched on after I switched off the engine, how exactly i have forgotten but when I drove it later it was behaving weird. Gear shift not smooth and jerking so today I followed your instructions cleaning the throttle body and doing the re -learning and everything turned to normal. 😅❤ thanks again for your wonderful video!
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!
Hey Srick E,
You are welcome and I am glad everything is back to normal :)
You're the best! :D I'm going to clean my throttle bodies now, they started throwing an error and idle is dipping at stoplights, despite everything else coming up great. Car's at 68,000 miles, doubt it's been done before :)
Hey Tim Wells,
What's the error or trouble code?
@@MotorvateDIY p0106. Planning on cleaning the throttle body and the MAP sensor.
Hey Tim Wells,
I don't know if this applies to your car, but there is a ECU update for the 370z / G37 to fix the P0106 code:
G37: static.nhtsa.gov/odi/tsbs/2016/SB-10075616-2280.pdf
370z: www.370zcoupe.com/TSB/1TS2.PDF
@@MotorvateDIY thanks! Mine is a '10, so I'll get it checked out. I'm installing a Z1 intake today, so I'm gonna clean them anyway :)
Nice vid, I wasn't even aware there were multiple procedures.
Hey Memo's Garage,
Thanks for the comment.
Also if you have a bluetooth OBD scanner and an Android device, you can use a free app to run the "idle air volume learning:
Quick & Easy Idle Air Volume Learning: Motorvate's DIY Garage Ep.28
ua-cam.com/video/OiB9txECWB0/v-deo.html
It worked on g35. Thank you sir
Good to hear
thanks for the vid. Everything worked . I think you became my personal UA-cam mechanic for my g37 lollol
I love that... thanks!
Amazing tutorial. Thank you!
Glad you liked it :)
I still use this guide when I do this on my g37 every year
Hey Haris,
That's nice to know... you made my day :)
Great tutorial!!.....I can do this for my Maxima and Altima!!
Thanks! I think you will notice a smoother idle and a slightly more responsive throttle. Let me know!
Thanks for the informative video. For some reason it took me several attempts for the idle throttle position relearn procedure to actually reset my engine rpms to normal, on the 3rd attempt it finally worked seemingly. My idle was WAYYY off though for some reason, like 1500-2000 rpms and surging instead of being at ~650. Now the engine is purring like new.
Glad it helped!
Your channel is criminally underrated.
I followed the instructions and my car idles normal in park or neutral, but still drops to 530 or so while stopped in drive.... dammit I’ll have to reclean the throttle bodies again. (I just replaced all 6 spark plugs and cleaned the throttle bodies today) :(
Wow... thanks for your kind words!
You can use NDSIII to increase your idle:
nisscan.com/NDSIII/index.php?content=idleadjust
@@MotorvateDIY For this stuff, I dont have an android device or the obd cable plugin... Would a pc work? also, about the plugin, which one should I buy?
I dont want the dealer to rip me a new one to do a simple idle rpm adjustment (it only drops to 500 in drive and even then sometimes, it sometimes goes away after a while of driving) Also when turning the steering wheel (while stopped in drive) the rough feeling is pronounced.
Thanks man just cleaned the throttles my my g37s was stalling at lights only did one reset didn’t know there we’re three tomorrow I will go thru 💯
Glad I could help!
@@MotorvateDIY worked bro thanks
🙏🏾🙏🏾
Good... I thought it would :)
Worked for a G37X 2012 sedan. Thanks
Good to hear
Thanks for the video. Worked for me great
Wonderful!!
Thanks for the feedback :)
It worked for my g 37 cleaned throttle body idle was hanging this reset it thanks for this video
Glad it helped!
Video helped a lot just cleaned my throttle bodies too
Glad to hear that qShifts :)
Love ur videos sir very much detailed krpp the good work up please
Thank you! There are more videos under development and should be out next month :)
Thanks brother that was a life saver
Glad to hear that! I really like how a little trick can make problems go away!
Instantly subbed. I read a comment where you confirmed you were working on a video, would that happen to be a spark plug replacement vid?? Thanks again!
Hey deegos14,
"Instantly subbed? Thanks!
Yes, my plugs are almost due for replacement and when the time comes, there will be a DIY video done :)
Love the videos man, when do you think you will start doing wheels/ suspension mods such as lowering springs/coilovers and camber kits/arms? Thanks for the videos 😁😁😁
Hey Sage N Rage,
Thanks for you kind words on the videos!
I am slowly putting aside funds for new wheels and tires, better brakes, then coil overs / camber arms.
It will just take a little time :)
Hey first off thanks for all you do for the community and for the videos. So I’ve got a 2013 g37x sedan and yesterday after a long day of running errands the car felt sluggish here and there accelerating and then started feeling weird starting up. Now thinking of it when I start up cold or hot it’s been idling a little high. Then after getting home after running around all day and it feeling different and having trouble starting up the car was off for maybe 30 minutes while I got ready for work. When I went to leave and start the car she struggled to start and felt rough starting up and idling more sporadic then usual. It felt shaky so I turned it off and took my wife’s car to work. Now I just got the car and it needs things like suspension work and a new rack and pinion mostly things that have nothing to do with the engine or transmission. I checked the fluids and while I can see I need an oil change nothing seems bone dry or crazy out of wack other then this driving off loss of acceleration once or twice yesterday and now it’s struggling to start and idling rough. After that novel do you think cleaning the tb or having someone do this for me and doing your method should help. There’s no lights on nothing as far as warning lights this just started happening. I hope you can help. Thanks a head of time .
I would start by looking at the battery.
If it is 4-5 years old, you might want to get it tested to see if it has the needed power to start the car. Or if you have a volt meter, check the voltage after the car has sat all night. The voltage should be around 12.6v or more.
When was the last time spark plugs were changed?
You may want to remove them and check their condition.
Start with these items and let me know how you made out.
Good luck!
Hey thank you so much for getting back to me it means a lot. I want this car to be my hobby and my daily so after spending a good amount of money on getting it and running into the suspension and rack and pinon issues I’ve already been crushed on how much I’m gonna have to put it to make it safe and fun to drive but then this starts happening and I’m like omg is it the dreaded gallery gasket issue or my engine or transmission. I’m so glad I found your videos and that you have a g and do some much diy helping everyone of us trouble shoot and maybe save our cars and money. So yeah the battery is prob old. Looks old for sure and idk about the spark plugs but if it’s like everything else on this car it most likely needs to be replaced. Cause who ever inspected it for the dealership or had it before had the bare minimum attitude and did as little as possible to keep the car running to keep passing it on to someone else to deal with till it’s come to me and I gotta spend a huge chunk of savings to get the car where it should have mostly been when I bought it. Sorry I keep ranting. So yes I’ll check all that tomorrow maybe get a new battery and see if I can get the spark plugs changed and see if that’s helps. If it doesn’t should I try to clean the TB. Should I look out for anything else that could I show signs of anything major. I’m gonna get the oil changed too. It needs it even know the level is good it looks old. Sorry one last thing if it is just a new battery and a tune up new spark plugs ect. Is it ok to start it and drive it even with the rough starts?
You have questions... I have my thoughts/answers:
(1) A dirty throttle body won't cause a rough idle, it make it a little more difficult to start when war, but all you need to do is apply a little throttle when you start it.
If the idle is a little high, it ca n be difficult to get the "idle air volume learning" procedure to complete. For now, I would not clean it and look at other causes.
(2) If there isn't a check engine light, it should be ok to drive it for a while with the rough start. The worry is that an engine misfire can cause a rough idle and dump raw fuel into the exhaust and catalytic converters, which is VERY bad for them.
BUT if that happens, generally there will be a check engine light or a flashing check engine light. (means engine misfire)
Again thank you so much for your time. I think I may be in big trouble here and I just got the car. So I changed the spark plugs yesterday and that was an adventure and even got a new battery while I don’t think I needed it cause the fluid I saw on the battery was protector spray and the car lights everything works fine all that. Also when I changed the spark plugs one or two didn’t look that bad and the others super dirty looking and even oil on one of my spark plugs which freaks me out and means I most likely need a new valve gasket. The throttle bodies where very dirty as I had get them to the side to get to my spark plugs. The car did start right up after I changed the spark plugs with no hesitation but did idle high and cause I did unplug the battery before I worked on the car I let the car run for a while to warm up and maybe reset the way it should perform by it self but it didn’t it kept idling pretty high and I didn’t see any smoke or anything no check engine lights the car did smell a little idk if it’s burning oil or what now. I gotta get the oil changed today and maybe try the re learn process idk. So i did recently have the exhaust break or a leak cause one day it sounded fine then was super loud so I took it to a exhaust shop they fixed it for like 200 bucks and then it sounded fine again but we did have a bit of snow here and it turned to ice and i scrapped the bottom of the car a few times and something could be loose or messed up again so idk. Also I read the forums and a guy had a 2013 just like mine same issues rough start out of no where loss of power here and there and it feeling off he took it to the dealership and they came back and said it was water in his gas and replaced it and told him to get better gas and that fixed the issue. Idk brother I think I’m in trouble here in Colorado there’s no lemon law and I think this small dealership sold me a lemon even though it’s a clean title and a good carfax I’ve had the car less then two months now and I’ve already got 3 grand worth or issues to fix with the mechanic that wasn’t engine or transmission related but now I think I might need to start looking for a rebuilt or used engine which there are a few here not too much but the labor would be crazy! Again sorry for the novel 😂 you can tell I’m worried and frustrated. The good news is it goes to the mechanic next Monday to fix the suspension and the rack n pinon and the other issues he first found so hopefully he can help with the new issue of it running off and this almost short periods of limp mode or loss of power/ acceleration and the off smells. It’s sucks cause I literally have an new catback exhaust here and a new rear sway bar and end links and other little things I wanna do but I gotta get the car healthy first😢 thanks for your time and help and again I’m sorry for the novels I appreciate you. I just don’t know what to do esp no lights on the dash and this came out of no where just after getting the car.
Also after starting up the car this morning service engine soon came on😢 maybe I can go to the auto store and see what it says and see the code. Omg here go!
I have a 2008 G37S, i needed to do valve cover gasket, and spark plugs so i naturally decided to clean TBs. Before i started the job i UNPLUGGED MY NEG BATT TERMINAL. I did not have to do a relearn what so ever. I was not wanting to use this video. I m glad it is here tho, just in case. TY
Hey Travis Massingale,
That is odd... If you cleaned the edge of the throttle body, generally you will need to do the idle air volume learning as you have changed the idle position air flow.
If you cleaned the front/back of the throttle plate the idle air flow doesn't change and an idle air volume learning is not required.
@@MotorvateDIY i did move and hold open the TBs. Got a super deep clean. I have to weirdest luck most of the time. I was ready to use this procedure. I forsure will use the other videos u have at some point. Ty
Thank you just saved me $600!
Hey aj awshah,
That's great! Thanks for the comment :)
Great informative video!
Glad you liked it! It really makes a difference.
Thank you very much.
anytime
Youre a beast! worked like you said it would.
Glad to hear that!
Easy answer... scan it for codes and see what is says :)
great video sir
Hey SAMI Almagrami,
Thanks for your kind words :)
I had the same issue and all I had to do was disconnect the battery and make sure the power was drained and reconnected the battery and start it up, it worked.
I'm glad that worked for you, but I don't understand why disconnecting the battery would fix it.... but it did :)
I love this video straight forward and great editing. Are there any other cheat code like resets for the g37
Thanks for noticing the effort in editing!
There is one for resetting the ECU and another to do a BCM test.
Just do an online search to see the steps needed.
Thank you for this clear and concise video. After cleaning my throttle bodies per your throttle body cleaning video, another great instructional video, I performed these three steps. Now my '08 G35S 6MT sedan, with almost 57000 miles, idles smoothly at 650rpm and throttle seems peppier, more responsive.
At first I had some difficulty with IAVL and thought it was due to not getting timing correct. I tried again after fully charging my battery and it worked the first time instantly. Since I have not been driving my much lately, I think my battery was discharged and not putting out required 12.9V at idle. I should have checked this with volt meter.
Thank you so much!
Now on to your OBD2 scanner comparison video... I need one of those MX+ blue tooth scanners!
PS. Any recommendations, does and don'ts for cleaning MAF sensors? When I bought can of CRC throttle body cleaner, I also bought a can of CRC MAF sensor cleaner. Instructions on can seems fairly straight forward.
Hey Stewart Rydman,
I'm glad you got the IAVL to work. It can be tricky.
As for cleaning MAFs, it could not be any easier:
• remove two 10mm screws
• disconnect the MAF connector
• on the narrow edge, there is an opening with a wire and a orange coloured glass bead. Spray the MAF cleaner on that and the other wires behind it. This is the intake air temperature sensor and the "hot wire".
• allow a few minutes for the MAF cleaner to evaporate
• place it back in the intake tube, with the opening (where we sprayed the cleaner) facing the front of the car.
• tighten the two 10mm screws (snug + 1/4 turn)
• plug in the connector
• start the car and check for a normal idle.
I will put together a video this spring.
Thanks for the update on your IAVL issue!
@@MotorvateDIY OK thank you. I will do MAF sensors next then.
You saved my life.
I'm glad the episode helped!
Really good and informational video as always! Do you noticed any significant difference in the driving after the throttle body cleaned up?
Hey Gabriel Hernandez,
Sorry for the late reply, sometime the comments get buried.
Yes, I did notice a difference. The engine is a little more responsive when starting off from idle.
Awesome video I will be cleaning my throttle bodies next week. I was wondering if I have to do the 3 step procedures if I have an uprev tune on it?? Thank you for your help
Hey Mahmoud Mustafa,
I believe you do. As I understand it, most of the UpRev changes are to the maps, look up tables and adding new features.
The normal service functions and OBD diagnostics are not changed. Just to be safe, you could always check with UpRev.
Good luck!
@@MotorvateDIY I appreciate the response and information. You are the man love the videos and knowledge take care!
thanks for your videos. you should maybe mention that the procedure ist manufacturer specific before somebody tries this on his car.
Hey NoExpert,
That's a good point... I will update the description and see if I can add video annotation / card.
Thank you!! Super easy and straight forward instructions 💪🏼 370z idles around 600-700 rpm after I followed all your steps… in any case how can I tell I did one of the steps wrong ?
If your idle is stable and when fully warmed up at 600-700 RPM, you did everything right :)
@@MotorvateDIY car runs way better and roars better when driving 💪🏼 the Z can breathe better now. And she starts right up now with no hiccups
Agreed. The initial throttle response is MUCH nicer. I'm glad the video was helpful :)
Excellent video my friend. I have a question 🙋🏻♂️,, is the same for infinity 2011 M37s…?
Thank you
Great video, I wish I had seen it 4 years ago when I cleaned the thottlebody on my 07 G35X, I had to take it to the dealership cause the procedure I found didn't work, I didn't know about the ecu update, I need your opinion on this, looking for a leak source my mechanic shampoo the engine, afterwards the engine sounds like a vacuum, I'm pretty sure the throttle position lost its calibration, stiff pedal and engine not so strong as it felt before, since they already updated the ecu program would I mess it up if I try this learning procedure? Plase help... tx in advance..
Hmm... I don't know what to say. How is the pedal stiff? It is a drive by wire, so if it is stiff, maybe some dirt/salt has collected in the lower hinge of the accelerator pedal.
As for re-doing the idle air volume learning, do you know that you can do it without any issues? Has you ECU been updated?
Saving for future
Good idea :)
Great video, I have a question? Will these steps work the same on a 2015 Q50 3.7 Base Infiniti? Been wanting to clean the TB myself and not go to the dealer$hip
Hey Leroi Rocks,
Yes it will work on your Q50. This procedure works on just about every Nissan / Infiniti made since about 2003, when the electronic throttle was introduced.
Good luck!
thank you so much for the video. Is it safe to assume that the Q50 3.7L can follow this same steps?
Yes, absolutely
Thanks!
Hey EHunterTV,
Anytime... I hope you found it helpful :)
Thank you
Hey Junior Valadez,
I'm glad it helped :)
Helpful video bro 👏
I have a question, my hyundai accent 2012 crdi diesel engine throttle valve is always almost at full open, in my scanner it shows 9% and when reved it only increases to 12%. Ive watch other videos their valve is also in default open position. There are times when intake air is 67C and exhaust manifold temp reaches around 500+ , the throttle valve works fine, it closes up to 80% everytime i pressed the accelerator. And when it happens i have no hesitation when running. Sometimes even if the valve only moves up to 12%. I have no hesitation. Im just wondering if throttle valve signal also affects the opening of the egr. I can see there is voltage at the egr that opens it but its not in timing. It should only open when accelerator is released like i observes in normal running condition.
I hate to say this, but I have no idea...I don't have any first hand experience with diesels AND I'm not going to guess.
Thank you! Question though, when doing step 3, the check engine light did not flash at all, but the idle is working perfectly, would I assume it still worked then?
Hard to say, but I would think so... You can always try it a few times to make sure. OR use the NDSIII app on android if you have a Bluetooth scanner:
Quick & Easy Idle Air Volume Learning: Motorvate's DIY Garage Ep.28
ua-cam.com/video/OiB9txECWB0/v-deo.html
Great guide step by step. Cleaned both throttle bodies couple weeks ago followed up with the 3 step relearn. Only problem I'm having is that the car jolts after releasing the accelerator pedal while driving. Don't remember the jolt was this aggressive before this, would you know what is causing it. I also did the relearn couple times.
Hey ljaizm,
That is a little odd.
Does that happen with the car cold or fully warmed up?
If you use the cruise control and use the steering wheel button to speed up or slow down is it smooth or give you a jolt?
Motorvate DIY Hey it does when the car is warmed up. I just took the car out for a spin to try the cruise control part but it does not jolt what so ever, if anything just a slight bump when going up and down the speed and it's very minimal. The problem only happens when I let off the gas and very noticeable when driving in congested road when I'm in 2nd and 3rd gear.
Hey ljaizm,
The reason I asked you to use the cruise control is to see what happens with small changes in throttle position.
I'm trying to figure out if the issue is the transmission/driveline or engine.
Maybe do the 3 steps again and see if there is any difference. Sometimes they are tricky to get to run.
If you have an Android device and a bluetooth PBD scanner you can use a free app to quickly do the idle air volume learning: ua-cam.com/video/OiB9txECWB0/v-deo.html
If there is no difference, you might want to post your question at myg37.com to see other people's experiences.
Sorry, I couldn't be more help.
@@MotorvateDIY Hey Motorvate,
Sorry for the delayed reply, went out to get an android device and did the NDS III Lite method. I made sure the pre condition were met (Coolant temp at about 210F and voltage at 13.9V). I ran the IAVL via the app 2 to 3 times and it failed. I then disconnected the MAF sensor for 10 - 15 seconds. While the sensor was disconnected the engine idle speed did surge to about 1200 rpm. Plugged the sensors back in after 10 - 15 seconds, cleared the code and ran the IAVL again and no luck, but the idle speed did drop down after though.
Side note, my car is tuned by a tuner and idle speed was raised to 825 rpm at idle. Will this affect the IAVL?
Thanks
It's needed because of poking the butterfly right? I never opened mine and the idle has been perfect. Nice video and keep them coming!
Hey Milan Parekh,
Nope... It is needed since it was cleaned. Over time, as the carbon builds up, the ECU slightly open the throttle in order to get the proper idle. By removing the carbon build up, the "air gap" is larger and that allows more air than the ECU expects. These 3 procedures will restore the idle to where it should be.
By the way, after you clean your throttle body, your cruise control is MUCH more smoother when speeding up or slowing down.
Thanks for your kind words! The next episode is in pre-production right now and should be released in 3-4 weeks. :)
Sounds good, when the time comes a coolant episode would be much appreciated.
Great video, im now a subscriber! I had to remove my throttle body on my 2012 g37 3.7 to get to a leaking inlet coolant hose and i needed more room to get to it. I did disconnect the negative battery cable as advised on another forum and after putting everything back together now my car will not crank at all. It just turns over. Help ive already been without my car for 2 weeks waiting on the correct hose. Could having the negative cable off for two weeks caused anything screwy to happen.?
Having the battery disconnected for a day or a year shouldn't cause a no crank condition.
Double check and made sure any electrical connection you touched is in the proper spot.
Thank you for your reply, I had to disconnect the throttle body connection to get to the small inlet pipe hose that goes from there to the outlet pipe so will o jabe to perform the necessary steps to relearn the pedal and the other two steps I can't remember off the top of my head but I know there is a sequence you have to perform.
Subbed and thank you
Thanks for the sub!
I have a 2008 Infiniti G35 sedan , I recently decided to buy it for work and I’m about to clean the throttle body ( I feel like it’s dirty ) . I was thinking to disconnect the battery and cleaning it , do you think by doing that I won’t have to do all of that or is it necessary, Btw great videos ! :D
For the 2008 G35, there is no need to disconnect the battery. BUT if you want to, there also is no harm in doing that.
Efficiently made video, thanks!. I have a 2009 Nissan Murano and I think this is what's happening to me at the moment. Few weeks ago, I cleaned the throttle body and the sensor; some time after that I see "service Engine Soon" light on the dash, I didn't make the link and was wondering what's about !... so I just bought an OBD2 dongle and run an App and it gave me at least two codes, P0448 and P0507.
Do you know if your procedure is applicable to a Nissan Murano ?
Hey Abdenour Derouazi,
The two trouble codes should be fairly easy to fix.
Nissan defines a P0507 as: The idle speed is more than the target idle speed by 200 rpm or more.
and the P0448 as: EVAP canister vent control valve remains closed under specified driving conditions.
The P0507 is a result of cleaning the throttle body. If you clear the code and then follow the steps in this video that should fix your idle.
The P0448 is defined as: EVAP canister vent control valve remains closed under specified driving conditions.
Most of the time this is due to a stuck EVAP canister vent control valve. It is located on the EVAP canister at the rear of the vehicle.
You could do an online search for the factory shop manual (easy to find) and then look at section "EC" and page 296 for easy to follow troubleshooting.
Good luck!
@@MotorvateDIY Thank you!, I will check it out.
Good to see you back! I just cleaned my throttle body about 2 weeks ago but didn't do the idle relearn procedure since I was told if I don't move the butterfly valve manually but clean around it I won't reset it. Do you think I still need to reset the idle?
Hey Edumacation95,
If you didn't move the butterfly, the most important part of the throttle body wasn't cleaned.
That is the part on the edge of the butterfly valve. I would suggest you clean it again and do the three things mentioned in the video.
Or if you are happy with it, then don't worry!
Interesting, I'll have a closer look at the butterfly valve and pay attention to the idle and see if it needs to be re-cleaned. Thanks for the advice! By the way, could you perhaps do a video on changing engine coolant out or even serpentine belts for the 370z/g37, am thinking of doing mine soon
Hey Edumacation95,
Coolant changing video will be shot in the late spring or early summer. (my coolant is due for replacement)
I will add the serpentine belt replacement to the production schedule for 2018, as I assume mine must need replacement soon.
My qx70 idles around 1.1-1.5k in park. Air filters recently replaced and only has 60k miles…maybe I should try this and clean the MAF and throttle body
It wouldn't hurt... That idle is a little high for a fully warmed up engine.