Thanks!

I noticed it shortly after I bought my car as I had a periodic stumble at idle that was resolved by cleaning the TBs, MAFs and performing a relearn.

My hope with the poll is to bring awareness and get A/T owners to see if they have the same issue as it's not really apparent unless you're looking for it.

-Eric

 

Fresh logs from today containing the information you'd asked for. If there's something I need to dig into so I can read these please share a resource!

Both logs have all vehicle speeds >0 removed for the snips below and are included with the CSV. Both logs are started with the ignition on but engine off, engine is started with log running. Both logs have me cycling from Drive to N/R/P at least once at the end of the log - unfortunately I can't capture the gear.

First log, from 9:19am, is with the car fairly warm and making a short trip (from convenience store to home) of about 5 minutes - idle was around 500 in Drive.



Second log starting around 11:24. Vehicle sat in the garage for about 2 hours before this trip. Before the stop at 11:28, I had the car in manual mode and was holding gears, i.e. "spirited" but only for a few minutes, and once I noticed the idle was normal I turned off climate control and radio. From around 11:28 - 11:34 (the rest of the trip) there weren't any additional loads on the vehicle - and same as always cycled through R/N/D/N/R/P at the end (backed into space) and the idle remained fairly constant in Drive.

 

Same. Bought in ‘15 with 17.5 k miles. Has had an intermittent low idle in “D” the entire time I’ve owned it. Not rough, just low.

 

UPDATE:
It has been one week and 3 days (10 days total) since getting the idle adjustment. So far, I have not had any issues. Idle stays consistent and I get no fluctuations. In fact, I am at the point now where I don't even thing about it anymore.

 

Did you get to the Nissan dealer on Sat?

 

So far, no negatives that I am experiencing. As for speed improvements, I am not sure. Seems just as fast as it did before. I don't drive aggressively anyway and to be honest, I baby the car most of the time. Before doing the adjustment, I never floored it from a stop and see how it accelerates. I would think that BEFORE the adjustment, you would possibly have a slight hesitation when flooring it from a stop. Does anyone experience this? If that is the case, I would think that AFTER the adjustment, it would take off immediately if floored from a stop since the idle is higher. Especially when you are comparing a take-off from 500rpm vs. 700rpm. Keep in mind too, this adjustment is within factory specifications. I do not consider this a mod or aftermarket adjustment. This is all within the designed and engineered specifications of this engine and vehicle. Otherwise, it would not be in the service manual.

 

I did and was told they can't change the idel because basically their not infiniti certified. Smh. I showed them the entire thread n but no luck so I'm going to try an infiniti dealer somewhere in nyc n see what happens

 

Basically, you want to speak with a seasoned Master Technician. They will know what you are talking about and where to go on the CONSULT to do it (Work Support screen). The term used (as shown on the work order) is "idle adjustment." Now, when I first called to make the appt., I told them I wanted the idle checked using the CONSULT scan tool. They did that, and the service adviser had my car and bill ready to go. It was then when I explained the situation to the service adviser, who then referred me to a technician, who then spoke with the master technician, who, ultimately was the one that did the adjustment.

So, I am not sure how to want to tackle this, but I would start off by telling them you want the idle checked and that you want to know what the number is reading off the CONSULT. When they tell you the number, then explain the situation and that you have had everything else checked on the car (including idle relearn, etc). I told my adviser, and the technician, that I had done TB cleaning, installed new air filters, did an idle relearn and checked out all other systems and everything was fine. I then advised them of the issue in that when I'm in D and at a stop, I get excessive vibration in coming from my seat. I advised it is because the idle is too low and told them to adjust the idle to 700. If you want to try 675 that is fine, but take it for a test drive first and make sure it's high enough to eliminate the vibration. I also advised everything involved at the dealer that what I am asking for is totally within the norms of the service manual and per he idle specifications.

Also, this adjustment CAN be done at any Nissan dealer. Any dealer that is telling you otherwise is either lying to your face. Or, if they are that ignorant and really have no idea, then I wouldn't want my car serviced there in the first place.

Also, as an update... the idle is still spot-on at 700 with no vibrations and no issues.

 

I just got caught up on this thread over the last month, fantastic to hear about JSBach1685's progress....I suspected the low idle might an issue a while back and was looking into it myself (also b/c I have an 07 with the ECU Idle reprogram issue) and dealers tend to be "uncooperative" with stuff like this at most places in my area...anyone who has access to the Consult III can adjust the parameter even if its a Nissan shop. period. whether they want to get into it is another thing and some of them just give the runaround and want to stick to work that they know is easy to do for sure and has high book time rates (/rant)...

Anyways, when I first wanted to look at the software adjustment of the idle earlier in the year I reached out to the NDS app developers b/c they have the idle adjustment functionality built into the the full version of the APP for the DE engines (i.e the currently fully released version) but they only had an unavailable beta version out for the VHR/HR engines (i.e our engines)...the beta was out over year ago (its since been taken down) and they said something about that they will announce it when its ready but implied that the development is stalled....since this thread has some traction and there is evidence that this is solution, maybe if enough of you guys reach out they will get back on releasing the app or an update to the lite version that includes this one additional function since its already developed for the DE app....either way I'd rather pay to get their app and have a potential resource in the future than spend time looking for a cooperative dealer and pay more for a single dealer consult adjustment.

 

Sounds like you found a technician that knows what he’s doing. Keep us posted on your results. It’s been just over a month now since my idle adjustment and all is still good. No changes or deviations.

 

No, I get no popping or banging of any kind whatsoever. There should not be any issues since the increase is still within spec. Idle is set when in Park. I took a video of the tach when selecting different gears, but I cannot get it to upload. Does anyone know the max file size we can attach?

 

I've always leveraged YouTube then linked here.

-Eric

 

How's it going? Did the bump to 668rpm remove the vibration? Thoughts/impressions?

 

Hi,
Sorry for the late reply. I was on vacation last week (cruise) and I had no cell service of any kind. Regarding the pop or jerk, I get no such issues. Thus far, I have not had any issue since having the idle adjusted. Can you post a quick video of what you are experiencing?

 

Went to Infiniti of Nashua (Kristin MacNeil) and had them do this idle change while I had them replace my right door actuator under my Elite CPO Wrap

Unlike some of the others here, I have an aftermarket setup: ISR Test Pipes, Vibrant 1790 Resonators, and Tanabe Axle-Back, which would exaggerate the symptoms of the dropping idle to 500RPM.

They first told me that everything seems to be in spec, but after I expressed it should be not be dropping outside of the range, they were willing to try the Work Support > Target Idle Adj Method that was highlighted here (off topic, they let you text the advisors so it was easier to show pictures).

The technician kept getting locked out (though they also gave me a battery reading of 700V, so I think the tech had an equipment glitch that day, but they did at least eventually select 650RPM and it's 80% better. It still drops slightly (maybe 625RPM after cold start without checking OBD), but stays within the range unlike before. After it warms up, the idle is pretty stable at 650. Still some vibration, but it's 80% better. Now, the tech may have forgotten to reconnect my keyless entry button while they fixed the door, so I'll have to come back Monday, and I'll use that opportunity to say that since they didn't reach my target RPM, they can use the day to try that again (especially for the $150 diag fee I paid...)

UPDATE 2/7/2020: They did a readjustment (allegedly ~680 in drive and 713 in park); works great!