Nissan Idle Relearn

[elitedja]

Hey everyone...Was wondering what your experience has been with using this function on your Verus or Modis...I have tried it on no less that 6 Nissans and cannot get it to work, I have followed all the on screen instructions but it always says "Test timed out". I called tech support today and they told me that according to what the Nissan techs have told them that even when using the factory tool they have trouble as well, is this true?? He also stated that the rpm had to be 800rpm's or below (the idle spec is between 675-725rpms now with the ac off and 825 on !!!)...I have had them come in as high as 1500. He told me that I could try disconnecting an injector or 2 to bring the idle down (I can't seem to get to any of the connectors) and then the test should run. I was just wondering if any of this makes sense or not (seems like a real pain in the a**. Maybe I'm doing something wrong?? Any input would be appreciated.
Thanks
Dan Antoine

[Steve6911]

Dan
Here is an old post on this topic

http://productforum.autorepairdata.com/forum/showthread.php?t=150&highlight=Nissan+idle+air+relearn

Doug had stated that he used his wallet to block the air supply to the engine slightly to lower the idle speed. I have found most of the time once you get the idle stable under 900 rpm the test should work. THEN rerun the relearn again without blocking the air intake. Some may say to pull spark plug wires or injectors to slow the engine speed down, but this never worked for me, also not the best thing for the car.

Steve

[DougMontgomery]

Hey Steve....I did not give you permission to use one of my OLD post <lol>
Hope your doing allright..con grads on you mod promotion.

Keep in touch

[elitedja]

Thanks Steve..I had a chance to talk to a Master Nissan tech today and he said that the idle has to be as low as 800 or the test won't run even with the Consult...He disconnects 1 or 2 injectors and then runs the test, shuts the vehicle off, reconnects the injectors and then runs the test again. Just seems like Nissan should have upped there threshold on the idle to 1000rpms to me cause that seems to be what I see them at the most when they come in.. Thanks again for your help
Dan Antoine

[Orevin]

Nissan has new calibrations available for some of their vehicles to address this issue. I had a 2002 Maxima in the shop a few weeks ago and was not able to perform the relearn, tried all the "tricks" mentioned here. Performed a reflash and the problem was solved!

[Steve6911]

Thanks Steve..I had a chance to talk to a Master Nissan tech today and he said that the idle has to be as low as 800 or the test won't run even with the Consult...He disconnects 1 or 2 injectors and then runs the test, shuts the vehicle off, reconnects the injectors and then runs the test again. Just seems like Nissan should have upped there threshold on the idle to 1000rpms to me cause that seems to be what I see them at the most when they come in.. Thanks again for your help
Dan Antoine

Dan
I did not think that the RPM had to be that low, but that could be me. With aftermarket scanners I have found the disabling cylinders in anyway did not work, again these is just my findings. Doug is the one that needs to be thanked, he came up with this procedure.

Doug
Glad to see you are back and safe!

Orevin
You are correct about the reflashes, Also Nissan as recently released new J2534 software that will reflash back to 1999. They now charge for the Software, I don't know yet if the flash files come with that purchase as I have not used it myself yet.

Steve

[Orevin]

...Nissan as recently released new J2534 software that will reflash back to 1999. They now charge for the Software, I don't know yet if the flash files come with that purchase as I have not used it myself yet.

Steve

The software for $270 does not include calibration files, which are $19.95 each.

[kebo1970]

I Had A 2005 Nissan Sentra With The 2.5 Liter That Had A Throttle Body Replaced. The Idle Relearn Worked The First Time I Tried It. Be Sure The Engine Is Warm And Follow The Instructions. The Main Thing You Have To Do Is Lower The Idle If Its Too High. I Stuffed A Rag In The Air Cleaner (be Sure To Hold The Rag Tight) And Got The Idle Down Enough So The Engine Did'nt Stall. The Test Ran With No Problems

[mpe235]

Nissan Idle air volume relearn

When trying to relearn the idle air volume on a Nissan there are a couple things that you need to check if it won't complete. The target idle and timing adjustments must be at zero (no correction) for the relearn to complete. Engine has to be up to at least 158 degrees ferenheit. If your idle is too high do the relearn with the vehicle in drive. It will bring it down to a manageable rpm. Then relearn it in park.

[lancepoulin@msn.com]

ive found that nissian is a pain in the rump in many different ways. ive been there on nissian idle relearn and followed the instructions and it took several attempts for it to finally take. hope that helps

[USpMD]

I must admit I also had trouble with this proceedure, first attempt was on a 04 QX4, shop had replaced T/Body, when I showed up I first checked for unmetered air, idle was high @ 1500 rpm, tried the drop in in gear method, didnt work, ran out of time that day, when I went back the next day, the shop stated the client had already picked up the vehicle, so lost out on that one, did one today, 03 Altima 2.5, again shop had replaced throttle body, idle was high @ 1500 rpm, first tried in gear method, test stalled with time out, tried again this time in park, idle dropped to 700 rpm, then stalled, scanner stated test complete, cleared DTC, started vehicle, idle was normal at @ 700 rpm, worked great, thanks Snap On.....

[TurboJim]

I have also found that when running the throttle closed setting, if you dont feel/hear the throttle being actuated, the test will fail. You gotta be dead on for each phase or it fails.

[Scott600rr]

Sorry to post on an old thread, but I am stuck I'm trying to do the idle air volume relearn on an 03 altima with a 3.5, I cannot get it to work, I've tryed at least 15 times I have tryed unplugging the injectors, blocking the air flow. The only time I can get it to say test completed is when I get the rpm's so low it stalls, and when I start it back up its still idling at about 1100 rpm. Every other time I try it just says test timed out.
Please help, I don't want to need to send the car to the dealer
Thanks

[sbreland73]

Sorry to post on an old thread, but I am stuck I'm trying to do the idle air volume relearn on an 03 altima with a 3.5, I cannot get it to work, I've tryed at least 15 times I have tryed unplugging the injectors, blocking the air flow. The only time I can get it to say test completed is when I get the rpm's so low it stalls, and when I start it back up its still idling at about 1100 rpm. Every other time I try it just says test timed out.
Please help, I don't want to need to send the car to the dealer
Thanks

Could be it needs and ECM calibration flash. As Kai posted awhile back, Nissan has a fix for this issue.

It may have a bad TB also. Have had this happen to us by uninformed Techs cleaning the TB, and pressing to hard on the plate. I always have someone in the driver seat turn the key on and hold the accelerator pedal while cleaning.

When we have had the need to perform the idle re-learn (albeit not very often) we have always had success with Snap-on scanners.

[Scott600rr]

Ok I already replaced the throttle body, but thanks for the reply ill give it a few more trys then send it to the dealer if it doesn't work.
I replaced the spark plugs and changed the plenum gasket, when I put it back together it was idling high. So I changed the throttle body and there was no difference. This wouldn't cause the ECM to need calibration would it?