Jump to content
SAU Community

Recommended Posts

hey

i have recently cleaned my throttle body on my 2001 M35 stagea, and now it wont idle correctly.

i did the relearning and it still hasnt changed.

now what its doing is when i start the car it revs up to 2000 then down to 1500 then back up to 2000 then rests at 1200 and slowly moves down to 800-900, it only does that when it is hot tho, when cold it just revs to 2000 then sits at 1200.

the other problem is when driving arond 60km and i release the accelerator the revs drop down to 600 and the car engine brakes hard then it jumps back up to 1200-1400, its also using more fuel then usual.

does anyone have any clue what is going wrong?

cheers

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/
Share on other sites

What was ur purpose for cleaning it? U've probably removed the sealing stuff that seals the butterfly to the throttle body. U can buy the stuff from somewhere, don't know where but. It will have to come back off to apply it

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6557958
Share on other sites

i was doing the rocker cover gasket and spark plugs and noticed it was ugly looking so i sprayed some brake cleaner on a rag and cleaned inside it, after i did it i found a topic saying do not move the butterfly.. :/

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6558019
Share on other sites

do the relearning procedure again, it didnt work the first time. you may need to perform the 2 other steps beforehand. then attempt the throttle re-learn procedure. perform that prodecure when the car is engine warm. ie: operating temperature

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6558039
Share on other sites

Did you actually notice it do the re-learn? Or just think it hasn't worked?

Its quite distinctive - it revs up, drops slowly past 650 to just above a stall then comes up again (you will feel it stutter). You Rev it up to check the reset, and it should idle 650 +- 50 at normal temprature.

I only ask because it is not easy to nail the reset proceedure, and lots of people have trouble with it. It does work though.

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6558040
Share on other sites

ok i did then learning when the car was warm and it didnt nearly stall when i did it however it did return to around 650 and returned there after reving, however once i turned the car off and restarted it, it went back to idle at 900-1000.

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6558048
Share on other sites

What was ur purpose for cleaning it? U've probably removed the sealing stuff that seals the butterfly to the throttle body. U can buy the stuff from somewhere, don't know where but. It will have to come back off to apply it

Tomie throttle coat from justjap approx $70

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6558513
Share on other sites

hmmm so sounds like a trip to nissan :S

Nobody in Adelaide has a Cipher cable?

If you do need to go to Nissan, just ask them if they could plug in their Consult and hit the throttle learn button. Should take all of 30 seconds from when they plug it in (plugging it in should take all of 20 seconds)... but they will prob try to charge you for an our's work

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6559099
Share on other sites

If your idle does not set between 650-750, the ECU will not learn the new setting.

Another influence on setting the idle correctly can be the PCV valve. This has a hose running from the drivers side bank to the drivers side of the plenum. If you remove the hose from the Plenum and block off the inlet to the plenum you can try to reset the Idle to see if this has any influence.

Good luck.

Cheers

andy

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6559924
Share on other sites

If your idle does not set between 650-750, the ECU will not learn the new setting.

Another influence on setting the idle correctly can be the PCV valve. This has a hose running from the drivers side bank to the drivers side of the plenum. If you remove the hose from the Plenum and block off the inlet to the plenum you can try to reset the Idle to see if this has any influence.

Good luck.

Cheers

andy

exactly which hose is this?

and if it resets fine what does that mean?

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6559940
Share on other sites

It also won't set if there is an engine fault lamp displayed from my experience. It will learn but as soon as I stopped the engine it would go back to 900 revs.

(unless the throttle was damaged, I had to replace it in the end due to a random limp mode fault in the TPS.)

Link to comment
https://www.sau.com.au/forums/topic/410519-idle-problem/#findComment-6560541
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Am I correct in assuming that the R35's are getting the classic skyline haircut off the odometer?  Quick search on carsales, there are 33 08 and 09 GTR's for sale, only 2 of them have more then 100,000km's on them (116,075 and 110,000 respectively).  And somehow there are about 25 for sale with around 60,000kms? Looks like the classic skyline haircut to me =/
    • @Stringycheese  Have you only gone to the one blue slip workshop?  There will be a heap of them where ever you live, good odds that the next place you go to will pass the car.  Unfortunately (or fortunately?) every blue slip / engineering workshop will be different and will be happy passing or failing different things - despite working from the same set of rules. It's kinda like 2 lawyers arguing over a piece of legislation, each saying their interpretation is correct. Might seem strange that this happens when it comes to getting a modified car passed, but this is very much a thing. A big part of the game is finding an engineer / workshop that is on the same page as you.
    • Bah. I daily mine. ~60km per work day, 10-12 thousand km per year. What's the point of having a dirty old Datto and leaving it in the shed. It needs to be driven and enjoyed while the govco allows us to do so. It will only be a few years before we're forbidden to even start up internal combustion engines.
    • Judging by that spring perch and the normal looking spring on it - not a coilover. Well.... it is a coilover, just a stock format coilover, rather than what everyone calls a coilover.
    • Yes it is. We get stock from Nismo directly. I'm happy to take photos/video of it as proof before I ship it with timestamps or whathaveyou.
×
×
  • Create New...