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2014 rough engine idle

janecka1

By janecka1
in Troubleshooting & Recalls

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janecka1 Enthusiast

janecka1

Posted
Posted

I just bought a 2014 silverado crew cab last week. I noticed a minor shake in the engine while idling (not 100% of the time). Ive felt this in older trucks that Ive owned but figured a brand new truck wouldnt do this. My question is, is this normal to feel this? if so, at what point does normal idle shakes turn into some i should be concerned about? I was under the impression that i shouldnt feel any shakes (minor or not). I have set up a appointment with my dealership, but i want to be prepared when i go in. Also, Im hearing a noise like a belt noise coming from the engine especially when i and parked in a drive through next to a wall. Should i be hearing any ticks form belts? Am i being too picky?

 

Any help would be great

Jason

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reldridg Enthusiast

reldridg

Posted
Posted

Janecka,

 

I was wondering if your dealer found a remedy for your rough idle. My sierra 5.3 with about 900 miles has started to intermittently idle pretty rough especially after it has reach operating temperature.

 

Thanks

beetle Enthusiast

beetle

Posted
Posted

Mine also makes that noise you describe. This is just my theory in regards to what may cause a rough idle: The gas in the tank might have degraded especially if it has been sitting on the lot since the middle of last year. mine had a slightly rough idle but it cleared after a few tanks, regardless, play it safe and have it looked at.

reldridg Enthusiast

reldridg

Posted
Posted

I am going to get it looked at, I was thinking it might be bad gas since the rough idle just came about in the last 100 miles or so after some very humid and icy weather.

nomadicdogg Enthusiast

nomadicdogg

Posted
Posted

all my last gm trucks develop the rough idle "last 3" at about 10,000 miles... its annoying but no codes so dealership says its great..
yea its not but thanks. tired of fighting that bs. If the new one does it, you bet your butt it will be in code or no code.
it should run smooth

janecka1 Enthusiast

janecka1

Posted
  • Author
Posted

Janecka,

 

I was wondering if your dealer found a remedy for your rough idle. My sierra 5.3 with about 900 miles has started to intermittently idle pretty rough especially after it has reach operating temperature.

 

Thanks

I went to the dealer and they said there was nothing wrong. They said it is normal. I don't believe it. I have sat in other 2014 chevys and do not feel it at all. I took a video of it shaking a cup of water so that yall can get a sense of the amount of vibration I am having. the link is

. let me know what you think. 2 days ago my check engine light came on and onstar said it was something about the emission sensor so I gotta take it in again (and for the recall)
janecka1 Enthusiast

janecka1

Posted
  • Author
Posted

Hi Jason,

 

I see that you were planning on visiting your dealership as of the 6th. Is there any news regarding your concern?

 

Kristen A.

GM Customer Care

I went to the dealer (Cecil in Kerrville) and they said there was nothing wrong. They said it is normal. I don't believe it at all. I have sat in other 2014 chevys and do not feel it at all. I took a video of it shaking a cup of water so that yall can get a sense of the amount of vibration I am having. the link is

. let me know what you think. 2 days ago my check engine light came on and onstar said it was something about the emission sensor so I gotta take it in again (and for the recall)
Hootbro Enthusiast

Hootbro

Posted
Posted

I went to the dealer (Cecil in Kerrville) and they said there was nothing wrong. They said it is normal. I don't believe it at all. I have sat in other 2014 chevys and do not feel it at all. I took a video of it shaking a cup of water so that yall can get a sense of the amount of vibration I am having. the link is

. let me know what you think. 2 days ago my check engine light came on and onstar said it was something about the emission sensor so I gotta take it in again (and for the recall)

 

I would get the check engine light problem address before worrying about the rough idle. They maybe related as whatever emission device tripped the check engine light, may have been defective for so many start cycles before tripping the CEL and maybe the cause of the rough idle.

reldridg Enthusiast

reldridg

Posted
Posted

Janecka,

 

That was a good video vibration is similar to mine, I do not see any variation in the tachometer but do feel it like a cylinder or two is missing during idle and it happens once the engine warms up and the coolant temp shows 210 degrees.

 

I have not taken it in yet since I have been under the weather for a few days but I am going to be contacting my dealer and also take a similar video to yours so I can show them the vibration is there and not in my head.

 

Let me know what you find out.

Thanks.

Ryan

ArtU Enthusiast

ArtU

Posted
Posted

Wow, still happening 6 years later. My 2008 does this came in around 10K miles. Chevy says it is normal for the 5.3 engine and only will do something if the Check Engine Light blinks while doing it. They issued a statement to all owners if the light blinks they will replace the Throttle Position Sensor. To meet idle emissions and gas mileage, Chevy take the idle down to the bear minimum. Once you get alittle build up in your Throttle body or injects you get the rough idle. Folks that tuned their trucks after warranty was out put in a little more idle RPMS. At 10K put in some Techron brand max injector cleaner. They make two types, the better one costs about $6.95 over the regular techron at Wal-mart. Techron has been stated by many to be the only real injector cleaner that works.

I bet it clears up, as the factory idle speed is right at teh edge of the spec floor.

fondupot Senior Enthusiast

fondupot

Posted
Posted

My 14 sierra does this intermittently.

 

I noticed this a few weeks ago, then the truck went to the dealer for it misfiring. The problem was the connections on the coil packs had no dielectric grease. I was hoping after they fixed the connectors it wouldn't shake any more. They did all sorts of tests with the computers hooked up the truck and drove it a lot. Said it is not longer misfiring and is running fine.

 

Still shakes. But like i said its intermittent.

janecka1 Enthusiast

janecka1

Posted
  • Author
Posted

Mine also makes that noise you describe. This is just my theory in regards to what may cause a rough idle: The gas in the tank might have degraded especially if it has been sitting on the lot since the middle of last year. mine had a slightly rough idle but it cleared after a few tanks, regardless, play it safe and have it looked at.

They said the noise is normal. This the fuel injection. (Sounds bad though, chevy sound do something about it). As far as the rough idle vibration, they said that was normal too (which I disagree, because I have sat in others that you can't feel the idle at all.) I posted a video that shows the vibration in a cup of water sitting in my truck little above this comment. As far as gas, I has filled it up 5 times thus far, and I haven't used the same gas station once.

janecka1 Enthusiast

janecka1

Posted
  • Author
Posted

I would get the check engine light problem address before worrying about the rough idle. They maybe related as whatever emission device tripped the check engine light, may have been defective for so many start cycles before tripping the CEL and maybe the cause of the rough idle.

I have an appointment this wed for the engine light. I am concerned about the vibration because I brought it in a month ago for the vibration and they say it was normal, but every other 2014 I've sat it doesn't do it.

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