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DIY: Clean your Throttle Bodies

Old 03-21-2019, 11:35 AM
  #361  
abrecos
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Trottle body cleaning

Originally Posted by Eldredge253 View Post
This completley simple cleaning scares the hell out of me... been wanting to do this since purchasd car as a routine maintenance, but there is SO many different stories. Some people dont have any issues at all. Others seem to have problems to were they have to replace the damb throttle bodies. I am more than capable of doing this cleaning amd the relearn procedure, but dont really want to buy new TBs either... i cleaned the MAFs the other day. All went fine. I happened to talk with Joe from ZSPEED and he said dont even touch the TBs for cleaning. He said its not worth it... So why do we have SO many different problems or No problems? So confused
I did this throttle cleaning and spark plugs change a few days ago and everything went smoothly, all you need is #30 star alien wrench to take four screws that is holding TB. I don't disconnect the car battery and didn't unplug TB either, just unbolt TB and set them aside, spray with TB cleaner and used microfiber cloth to wipe inside, moving butterfly with my finger. I also clean MAF sensors too,by the way is very important to disconnect harnesses from sensors before working on them. Is nothing to be worried about, just take your time and be consistent that is all.
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Old 03-21-2019, 12:13 PM
  #362  
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Originally Posted by Eldredge253 View Post
This completley simple cleaning scares the hell out of me... been wanting to do this since purchasd car as a routine maintenance, but there is SO many different stories. Some people dont have any issues at all.
Here is the reason why you hear some horror stores:
The 2007 VQ35HR's ECU with an ECU id ending in "A" has a bug and won't do the idle air volume learning.

I believe, Nissan fixed the issue and updated firmware now ends in version "C"
I wonder if some shops replace the throttle bodies just to increase profits, then do the $100 ECU update.

The only person I know who can fix this 100% of the time is Eugene & Enthusiast Auto Care.
He loads the 09 HR firmware on your 08 ECU.
https://www.yelp.ca/biz/enthusiast-auto-care-concord

He is also an ECUTek master tuner, See a review here:
Review - Ecutek by Master Tuner: Eugene @ Enthusiast Auto Care - Nissan 370Z Forum




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Old 03-21-2019, 01:01 PM
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So in theory to what your saying is that my G being a 2009 with the 3.7l would have the new firmware and update so shouldnt be affected by the 3.5l issue with throttle bodies? I also have an uprev tune if that matters
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Old 03-21-2019, 04:27 PM
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Originally Posted by Eldredge253 View Post
So in theory to what your saying is that my G being a 2009 with the 3.7l would have the new firmware and update so shouldnt be affected by the 3.5l issue with throttle bodies? I also have an uprev tune if that matters
That's my understanding, but since I have a 2011, I can't be 100% certain.

You could have a read through these comments, some people mention their year and if they were successful:
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Old 03-21-2019, 04:43 PM
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Ya. Ive read ALL thru this forum and online about this subject. Like i said earlier in 1st post even Joe at Zspeed says dont do it... been looking into doing this for a couple months now. Lol... i actually called infiniti about having them do a TB cleaning and yhe service guy said that they only do what they call an "induction" cleaning at thier shop. They want like $250 tho...
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Old 03-21-2019, 04:52 PM
  #366  
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I understand... Too bad Nissan messed up like this. Worst case, there is always Eugene.
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Old 03-21-2019, 05:13 PM
  #367  
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Originally Posted by SonicVQ View Post
Here is the reason why you hear some horror stores:
The 2007 VQ35HR's ECU with an ECU id ending in "A" has a bug and won't do the idle air volume learning.
This would explain so much...I have developed a tried and true method for doing the relearn on my 07 HR but its not for the faint of heart and still a PIA that takes more time than I'd like somtimes....

I'd much rather get a firmware update....Eugene is out in the Bay area in California... can you get the firmware updated anywhere in the GTA?
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Old 03-21-2019, 09:11 PM
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I actually didnt know that the earlier Gs came with the 3.5l? What year did they go to the 3.7l?
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Old 03-21-2019, 09:20 PM
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Originally Posted by Hashim View Post
This would explain so much...I have developed a tried and true method for doing the relearn on my 07 HR but its not for the faint of heart and still a PIA that takes more time than I'd like somtimes....

I'd much rather get a firmware update....Eugene is out in the Bay area in California... can you get the firmware updated anywhere in the GTA?
Not that I know of...
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Old 03-21-2019, 09:26 PM
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Originally Posted by Eldredge253 View Post
I actually didnt know that the earlier Gs came with the 3.5l? What year did they go to the 3.7l?
Ummm, yes, the G35 with the 3.5 liter V6, has been around since 2003....
The G37 has been around since: 2008 for the coupe, the sedan was 2009.

Is your google broken?
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Old 03-21-2019, 09:30 PM
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Lol... no im sorry... i knew the G35 came with the 3.5l. It sounded by the previous posts that you were saying the G37 earlier years came with the 3.5l as well. My mistake i guess
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Old 03-21-2019, 09:33 PM
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No worries... I was just having a little fun
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Old 04-28-2019, 02:36 AM
  #373  
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Did this today while I changed out the plugs and thankfully no codes or issues. I moved the butterflies as well to clean them the best I could

Had to reset windows though lol
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