Nissan 370Z Forum  

Help with Idle Air Volume Relearn Procedure

Hello all, Two weeks ago, I replaced my twin-ram intakes with the stock ones that came with the car (with some Mishimoto pipes). On cold start, the car now idles

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust

Like Tree19Likes
  • 1 Post By T-Rex57
  • 1 Post By Trips
  • 1 Post By JWillis72
  • 1 Post By T-Rex57
  • 1 Post By T-Rex57
  • 1 Post By Trips
  • 2 Post By T-Rex57
  • 3 Post By SouthArk370Z
  • 1 Post By T-Rex57
  • 1 Post By JWillis72
  • 1 Post By JWillis72
  • 1 Post By newls196
  • 1 Post By T-Rex57
  • 1 Post By kittens
  • 2 Post By Sean1125R

Reply
 
LinkBack Thread Tools Display Modes
Old 03-14-2016, 06:43 PM   #1 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default Help with Idle Air Volume Relearn Procedure

Hello all,

Two weeks ago, I replaced my twin-ram intakes with the stock ones that came with the car (with some Mishimoto pipes). On cold start, the car now idles around 1500rpm instead of 650-ish rpm. It's been creeping up over the last few starts, I first noticed the high idle a few days ago at around 1000 rpm.

Throttle response is also very poor. In light of this and some research, I decided I needed to do the Idle Air Volume relearn 2003-2011 Nissan 350Z - 370Z Idle Air Volume Learning Procedure | Nissanhelp.com

Problem is instructions don't seem to work. For instance, a MIL/CEL light is supposed to blink during the procedure. Mine does not, despite following the instructions to the letter. Does anyone know the proper procedure for a 7AT 370z? Car is tuned with Uprev.

Regards, MK
Sean1125R likes this.
T-Rex57 is offline   Reply With Quote
Old 03-14-2016, 06:58 PM   #2 (permalink)
Administrator
 
Trips's Avatar
 
Join Date: May 2009
Location: Disneyland, Ca Age:65
Posts: 8,595
Drives: 🇯🇵
Rep Power: 10
Trips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond repute
Default

See if this could help.

Custom ported and CNC throttle bodies, upper and lower manifolds
Sean1125R likes this.
__________________


http://www.the370z.com/payments.php
Trips is offline   Reply With Quote
Old 03-14-2016, 07:07 PM   #3 (permalink)
A True Z Fanatic
 
JWillis72's Avatar
 
Join Date: Sep 2013
Location: Fort Myers FL
Posts: 2,002
Drives: 2009 370Z yellow 7AT
Rep Power: 41
JWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond repute
Default

That is the correct instructions, we did it on my car today but make sure you time the steps. I think we messed up the first time by turning the car off after step 9.
Sean1125R likes this.
JWillis72 is offline   Reply With Quote
Old 03-14-2016, 10:01 PM   #4 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default

Quote:
Originally Posted by Trips View Post
Nice, but I don't have several months salary to blow on such
Sean1125R likes this.
T-Rex57 is offline   Reply With Quote
Old 03-14-2016, 10:05 PM   #5 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default

Quote:
Originally Posted by JWillis72 View Post
That is the correct instructions, we did it on my car today but make sure you time the steps. I think we messed up the first time by turning the car off after step 9.
Did you pull the battery terminal first before starting? I swear I've timed this at least 20 times and didn't once see the CEL (MIL?) light flash once. I didn't pull the battery terminal though
Sean1125R likes this.
T-Rex57 is offline   Reply With Quote
Old 03-14-2016, 10:20 PM   #6 (permalink)
Administrator
 
Trips's Avatar
 
Join Date: May 2009
Location: Disneyland, Ca Age:65
Posts: 8,595
Drives: 🇯🇵
Rep Power: 10
Trips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond reputeTrips has a reputation beyond repute
Default

Quote:
Originally Posted by T-Rex57 View Post
Nice, but I don't have several months salary to blow on such
Oh I know that, but it also steps you thru the re-learn procedure.

I think thats what you were asking for.
Sean1125R likes this.
__________________


http://www.the370z.com/payments.php
Trips is offline   Reply With Quote
Old 03-14-2016, 10:26 PM   #7 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default

Quote:
Originally Posted by Trips View Post
Oh I know that, but it also steps you thru the re-learn procedure.

I think thats what you were asking for.
Ahh now I gotcha. Thanks mate, I'll take a read.

I've searched for this problem on the forums before posting of course, but as JWillis says, those are the instructions everyone uses. Perhaps having an AU model car is an issue?
Mysilverz and Sean1125R like this.
T-Rex57 is offline   Reply With Quote
Old 03-14-2016, 10:39 PM   #8 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,159
Drives: 2014 Challenger
Rep Power: 240306
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Lightbulb

Quote:
Originally Posted by T-Rex57 View Post
... I've searched for this problem on the forums before posting of course, ...
IMNSHO, the search function here leaves a lot to be desired. Great site; crappy search.

I've had much better luck using one of the big web search engines - Bing, DuckDuckGo, Google, &c - and adding "site:the370z,com" to my search string.

Eg:
https://duckduckgo.com/?q=Idle+Air+V...%3Athe370z.com
Volko, Mysilverz and Sean1125R like this.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 03-15-2016, 01:50 AM   #9 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default

Ok, just tried again following instructions in the other thread.

I'm assuming "ON" is on without the engine started. In this state, the battery only reads 12.0V, not 12.9V like it says under "PREPARATION". I'm assuming this is why the procedure doesn't work.

New battery?
Sean1125R likes this.
T-Rex57 is offline   Reply With Quote
Old 03-15-2016, 03:55 PM   #10 (permalink)
A True Z Fanatic
 
JWillis72's Avatar
 
Join Date: Sep 2013
Location: Fort Myers FL
Posts: 2,002
Drives: 2009 370Z yellow 7AT
Rep Power: 41
JWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond repute
Default

On is pushing the button twice without you foot on the breaks, engine doesn't start. 12.9 is when it's running I believe.


Sent from my iPhone using Tapatalk
Sean1125R likes this.
JWillis72 is offline   Reply With Quote
Old 03-15-2016, 03:55 PM   #11 (permalink)
A True Z Fanatic
 
JWillis72's Avatar
 
Join Date: Sep 2013
Location: Fort Myers FL
Posts: 2,002
Drives: 2009 370Z yellow 7AT
Rep Power: 41
JWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond reputeJWillis72 has a reputation beyond repute
Default

Are you using a stop watch?


Sent from my iPhone using Tapatalk
Sean1125R likes this.
JWillis72 is offline   Reply With Quote
Old 03-15-2016, 04:07 PM   #12 (permalink)
Base Member
 
newls196's Avatar
 
Join Date: Feb 2016
Location: Georgia
Posts: 115
Drives: 2012 370z
Rep Power: 5
newls196 is on a distinguished road
Default

Quote:
Originally Posted by JWillis72 View Post
On is pushing the button twice without you foot on the breaks, engine doesn't start. 12.9 is when it's running I believe.


Sent from my iPhone using Tapatalk
12.9 has to be with engine off.... if your voltage reads 12.9 while engine is on, then an alt is within someones future
Sean1125R likes this.
__________________
2012 370z
6MT "Sport Package" Z1 CSC, Z1 Test Pipes, ARK Catback, Injen CAI, SpeedBooster, Custom PCV Canister setup, Z1 dyno tune coming soon
newls196 is offline   Reply With Quote
Old 03-15-2016, 08:18 PM   #13 (permalink)
Base Member
 
T-Rex57's Avatar
 
Join Date: Oct 2013
Location: Adelaide, SA, Australia
Posts: 78
Drives: 2012 Nissan 370z
Rep Power: 7
T-Rex57 is on a distinguished road
Default

I am using Stopwatch for all procedures.

Volts are between 13 and 14 when running. 12.0 when engine is off but button set to ON (two pushes)

I've done an ECU reset this morning, short distance drive and everything seems a little better. Could be all mind games though eh?
Sean1125R likes this.
T-Rex57 is offline   Reply With Quote
Old 07-08-2017, 09:41 PM   #14 (permalink)
Enthusiast Member
 
Join Date: May 2013
Location: Central NJ
Posts: 412
Drives: 2009 Nissan 370Z
Rep Power: 8
kittens is on a distinguished road
Default

I am trying to do the reset but not working. I used the clock on my computer so was sure it was enough seconds. for step 6 (and 7a, b) do I do the 5 pedal stomps while the car is ON or OFF? I couldn't get a blinking CEL but I had a solid one show (but I think it shows anyway if it is ON)

I made sure it was at least x seconds but if it was x+1 would it throw it off? seems hard to get exactly
Sean1125R likes this.
kittens is offline   Reply With Quote
Old 10-07-2019, 12:01 PM   #15 (permalink)
Base Member
 
Sean1125R's Avatar
 
Join Date: Jan 2016
Location: NW Washington
Posts: 69
Drives: 370Z Nismo
Rep Power: 5
Sean1125R is on a distinguished road
Default

Quote:
Originally Posted by T-Rex57 View Post
Did you pull the battery terminal first before starting? I swear I've timed this at least 20 times and didn't once see the CEL (MIL?) light flash once. I didn't pull the battery terminal though
I was seriously losing my mind trying to accomplish this. I had my phone out timing it to the exact second for days on end. It never accorded to me to disconnect the battery again when retrying the idle volume reset after changing out the throttle bodies. I figured since I had the battery disconnected during install that should have sufficed. But low and behold that was exactly what was needed. After many days of frustration and about to contact EPS for a possible solution I came across this thread and my problem is solved. I disconnected the battery for 30 seconds and on the third attempt I nailed down the timing and now the Z is all good and idling properly once again.
Rusty and wideglideleon like this.
Sean1125R is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is there a relearn/reset procedure after cleaning MAFs? SouthArk370Z DIY Section (Do-It-Yourself) 1 09-28-2013 03:38 PM
Modding before break in procedure done? FairladyZ Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs 11 04-30-2012 08:19 PM
whats the procedure for.. g35300mm Nissan 370Z Pricing / Ordering Discussions 1 01-06-2009 08:58 AM


All times are GMT -5. The time now is 10:42 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2