Hi
After I cleaned maf sensors and thotle body , the rpm gage and idle up and down continuously between 1100 to 1900 forever .
After the cleaning procedure
I replaced the 2throtle bodys', their thotle sensors and maf sensors with oem ones and
Tried reset procedure sevral times you know releasing "paddle 10 second wait and ......"
But after replacing thotle body
The idle started little lower but
The buning is still there .
There is no code .
Please help me out .
Thanks in advance .

 

Read my posting re. the below thread.
https://g35driver.com/forums/v36-diy...bodies-37.html

 

 

Did you read the linked thread above? This forum has tons of info if you spend a minute looking for it. You'll often find a solution faster that way than if you post and wait for someone to spoon feed it to you.

 

If you cleaned throttle bodies, MAF, etc, and still didn't fix this, look for vacuum leaks in the plenum where the engine cover screws go in. If the engine cover is off put the screws back in and see if that fixes the issue. If not, look for holes in those weird little attached "chambers" on the intakes - mine rotted out causing some vacuum leaks and weird idle jumps. Look on both the driver's and passenger side intakes.

 

This thread is over two years old.

It is amazing to me that so many post their problems here after spending $$$ and throwing parts at a problem rather than have a dealer hook up the Consult lll diagnostic tool and pay the diagnostic fee.
There are so many electrical sensors and connections thru the wiring harness that are next to impossible to diagnose without the computer software that the Consult tool uses.

Telcoman

 

Hi,

Did u fix the problem? What was the reason? Thank you for sharing.

 

Did you ever have any luck finding out what was wrong , I am having the same issue on my 07 G35 Base Sport Sedan.

 

Originally Posted by Red Shogun
I can verify that ITB11-060 " INTAKE AIR VOLUME LEARN WILL NOT COMPLETE" TSB worked for me on my 08 G35x Sport.
I cleaned both throttle bodies while during a spark plug change. I did not disconnect the
throttle bodies or the battery and still got the P0507 code and the 800-900 rpm issue.
After 5-6 tries at going through the:
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
PERFORM IDLE AIR VOLUME LEARNING
procedures with no luck I found out about ITB11-060. I pulled the passenger side MAF connector and got a P0102 code. I cleared the code using my ScanGauge II, went through
the processes again, still didn't work. I noticed on the ScanGauge that my Throttle Position Setting (TPS) was at 2%. I re-did the entire process again, this time pulling the driver side MAF connector. This time I got a P010C code, cleared it, performed the rest of the procedures, and my idle rpm went down to 700. Let the car sit off for an hour, restarted it and my idle speed was 637rpm as measured by the ScanGauge. And the TPS was at 1%.
I think I might have been too fast with the throttle valve closed position procedure the first time I did the MAF reset. But doing the MAF reset before the other procedures worked and my idle speed is within spec now.

 

I know for a fact that my 07 G35 could not do a t-body relearn using aftermarket scan tools or Consult 3+. None of them would complete when started. The manual procedure never worked either. I even tried a 08 ECM in my 07 and same thing. The idle is hard coded and not adjustable. If your RPMs fluctuate, you should look for a vacuum leak, faulty cam sensor(s), dirty/faulty MAF(s) or throttle body issue. Check your sensor plugs as they like to crust and detach.