anyone experiencing a rough idle?
It seems that after a good long run and come to a light, the idle is quite rough, kinda like a vacuum leak or something.

 

You mean like a misfire? I get that since day 1.
It does it when the engine is cold or hot. It stumblers and act like it's going to die. But it never does. Mine is also a 2012 and currently has 7000 miles and runs perfect....

 

If it's under warranty, which I'm guessing it is, have the dealer look at it. My stumble turned out to be one of the 7500 that had to have one of the banks of the heads replaced. It wasn't a recall though as it only would come up under certain circumstances. Not trying to scare you into thinking it's something major, just saying let the dealer figure it out when there's a warranty.

 

I feel for ya. I have had this problem since my 2011 Crew was brand new. I have had in looked at by "3" different dealerships a total of 16 times, along with transmission issues and wheel shake. The first time they admitted it was a problem, and it was due to water in the gas (free fill up they gave me when I purchased) after 2 tanks of fresh gas, it persisted. Now they said it was completely normal. The engine was trying get the idle as low as possible to conserve fuel. There was no misfire, even though Chrysler had a huge issue with misfires due to bad heads, and were replacing about 17,000 of them free of charge. They told me each time that they could not do ANYTHING without the engine throwing a code, or a MIL. I finally got Chrysler to give me a 100,000 mile warrantee in leau of me pushing to Lemon Law it.

 

the idle got worse and threw a code P302. Took it to the dealer today so I will report back in a few days as to the result.

 

Most likely a cylinder head failure.

 

That is exactly what it was. # 2 cylinder loosing compression so I got a new head under warranty. Idles very nice so far. Hopefully the dealer was truthful when they told me the new head was redesigned, and not just a remanufactured head.

 

I think all they did is upgraded to more Hardened Valve Seat and Valve. But so far, any 3.6l built after 2012 doesn't have problems, only the first wave built in 2011 are affected. So I assume Chrysler has permanently fixed the issue.

 

So the shaking and vibration is gone? I'm glad you finally got resolution. I guess I am going to be stuck with this problem unless it throws a code for some reason. You would think that they would do a compression test, just off the fact that it "feels" like something is amiss. I understand why they won't do it. Chrysler is not going to pay them for diagnostic work due to what the "customer" perceives. Tell him its normal, and hope it holds together untill the warranty is up.

 

They fixedc my head. Engine stumbled and no codes were being thrown. Try another dealership maybe?