Why is my Nissan Frontier shaking at idle?

Anyone else have a bad vibration sitting at idle while in drive or reverse? ~50rpm above idle the vibration goes away and it’s Cadillac smooth inside. If I shift to neutral while stopped the vibe goes away because it will idle a little higher.

Maybe I should plug a scanner in and see if I can read the exact RPM, and somebody else can do the same and see if the numbers jive. 2022 S King Cab 4×4….

1200 příspěvků · Připojeno 2020

I’ve heard of this problem in the past from 2nd gen 4.0 owners. Many raised their idle by 50 rpms to cure the problem. This is the first complaint I’ve heard from the 3.8 crowd though.

2015 SV 4.0 KC 4X2, w/6 speed manual, 4″ CST spindle lift and blocks.
3777 příspěvků · Připojeno 2006

The only way to raise idle rpms in a Gen 2 is to employ a TUNE. This is software that replaces factory SW which has the idle rpms locked down. I suspect Gen 3 will be the same. It’s an emissions type of thing.

06 Nismo 6M 4X4 Modrá
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2337 příspěvků · Připojeno 2021

In response to the original question, I haven’t had a rough idle in my 3.8L ‘21 or my “old” ‘18.

Increasing the idle speed is not the answer. There’s a problem causing it. Idling faster just covers it up.

‘21 SV CC 4X4 Special Edition, 2.5/1.5” RC N3 zdvih, 275/65R18 Trailfinder AT’s
1200 příspěvků · Připojeno 2020

I’m sure you are correct but I’ve found several examples of people having this done by the dealership. here’s just one excerpt from one thread. Search raise idle and you’ll find more.

«I brought the truck into the dealership and with great results I’m happy to report.
There was no reflash to be done on my truck per the production number and it being a 2013.
But they did raise my idle 50-75 and it totally smoothed out my problem, No more vibration noise while in gear at a stop.
I’m glad it was such an easy fix and hopefully if anyone ever has to deal with this they will read here what the fix is.
Thanks to everyone who posted and there good feedback.»

2015 SV 4.0 KC 4X2, w/6 speed manual, 4″ CST spindle lift and blocks.
3777 příspěvků · Připojeno 2006

I’m sure you are correct but I’ve found several examples of people having this done by the dealership. here’s just one excerpt from one thread. Search raise idle and you’ll find more.

ČTĚTE VÍCE

How do I know if my VW air cooled engine is overheating?

Many times, all the dealer does is perform the idle air relearn protocol. The greater body of work is that dealers cannot modify idle rpm. There is no «screw.» The dealer would have to futz with the software to increase rpm.

06 Nismo 6M 4X4 Modrá
1200 příspěvků · Připojeno 2020

Whatever you want to call it dude. Anybody can read several examples on here of people who have solved their idle vibration problem by having the dealer raise the idle. I’m out.

2015 SV 4.0 KC 4X2, w/6 speed manual, 4″ CST spindle lift and blocks.
434 příspěvků · Připojeno 2020

Maybe I should plug a scanner in and see if I can read the exact RPM, and somebody else can do the same and see if the numbers jive.

I’ve got a 2020 which as you know has the 3.8L. ScanGauge indicates it idles at or around 650 RPM. That is with no accessories on. With lights on RPM drops to around 625 or so. I don’t detect any vibrations. to be honest it’s one of the smoothest idling vehicles I’ve owned.

Will be interesting to see what you get for numbers.

Diode Dynamics SS3 Fog + aFe Momentum GT CAI + K&P Engineering S1 Oil Filter + Pedal Commander PC79 + SumoSprings SSR-612-40

615 příspěvků · Připojeno 2021

If the idle is at factory specs and it is rough, raising the idle is not the answer. The dealer needs to determine why the idle was rough. Last thing you want is the roughness to come back after the warranty expires because raising the idle only masked the problem, and now it is on yur dime to fix it.

50 příspěvků · Připojeno 2021
When I put it in park I get a shudder and rough idle till tapping the gas pedal
62 příspěvků · Připojeno 2021

I have this issue as well .I got a idle relearn which helped but now that it’s getting cooler it’s happening more often again . did u ever get this taken care of and if so how?

Thrusty Discussion starter
628 příspěvků · Připojeno 2021

Thanks for checking those #’s JetBlack. I’m between 625-637 using Autel AL619 scanner in all configurations. Lights, AirCon, etc. it’s always the same. When turning those items on and off or shifting from P to D or whatever, the idle drops down to 575 before coming back up and it really vibes. I should have mentioned it’s audible to a droning noise, real low frequency. After screwing with it for 20 mins, I have a splitting headache from that frequency of noise. I wonder if this could be trans/torque converter related….

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434 příspěvků · Připojeno 2020

I checked again to day after the engine was nice and warm. At idle RPM was around 650 or 675 with no accessories which in P. With all accessories on including the AC I saw my RPMs jump up a little to around 700. Moving my shifter around had no impact. I never saw it drop down to 575 like you experienced on your end. Are you seeing any codes? I would certainly make sure your hoses and clamps are nice and tight, but other then that I would know what to check. I would bring your truck to the dealer and get it serviced. Definitely keep everyone posted.

Diode Dynamics SS3 Fog + aFe Momentum GT CAI + K&P Engineering S1 Oil Filter + Pedal Commander PC79 + SumoSprings SSR-612-40

9890 příspěvků · Připojeno 2014

On some Gen 2 model years:
Didn’t BullyDogs have the ability to affect the idle speed (as well as advancing the timing)?

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’15 SV KC, 4.0, 6-sp, 4×2 DD/WT
Položky VTP = Standardní výbava na SV 6-sp
_________

’00 XE KC, 2.4, 5-sp, 4×2 ~PRODÁNO~
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615 příspěvků · Připojeno 2021

You have a 2022, it’s under warranty. It’s not your job to figure this out, it is the dealers job. The idle should be rock steady and smooth. It may dip momentarily when you put it in drive or reverse, but come back up within a second. It also may run 25 to 50 rpm higher when the AC compressor is on. If the engine idle speed varies on accessories and transmission selection, the computer is not controlling the idle, most likely because it doesn’t know it is supposed to control the idle and that is most likely the gas pedal sensor. But that is for the dealer to figure out.

It is interesting that the owners manual says to check the emissions label under the hood for the idle speed, but the emissions label under the hood does not have that information on my 2020. Anyone else notice that information is missing?

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Thrusty Discussion starter
628 příspěvků · Připojeno 2021

Nah, no codes. I only asked the forum to arm myself with any info I could when I do head to the dealer. Wanted to know if they were all like that, or what. I noticed it on the first drive, but thought it was because it was new and breaking in.

My dealer isn’t easy for me to get to, has no courtesy cars and takes forever. It will cost me hundreds to drop it off and rent cars and lost time.

I’m sure the mechanics are good but the service writers are terrible. I brought my ‘19 in there before trading and had two rattles I wanted them to fix, they didn’t address either and said it was my plastic bed liner making the noise. I complained about air blowing from the vents while on floor only and they “changed the blower motor.” Cmon man. And some other things I can’t remember. I looked at the sheet afterword and nothing I told him was close to what he wrote down.