2012 WK2 3.6 - 43k miles - Developed a rough idle - Jeep Garage - Jeep Forum

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Old 03-18-2015, 07:46 PM
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Question 2012 WK2 3.6 - 43k miles - Developed a rough idle

Hey all,

I started noticing that when I am sitting at a stop light with foot on the brake and the transmission in D, I feel a slight shake in the vehicle...almost like it is going to stall but doesn't.

It never did this before, and it started happening just recently after it started warming up after this past winter.

The RPM is at a steady 600 RPM and doesn't seem to change much even though I feel the shake.

I have a feeling that I need to get it into the dealership but until then, does anyone have any thoughts on this?

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Old 03-19-2015, 09:32 PM
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Re: 2012 WK2 3.6 - 43k miles - Developed a rough idle

Check for a P030x code. Particularly a 300, 302, or 304.
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Old 03-22-2015, 11:17 AM
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Re: 2012 WK2 3.6 - 43k miles - Developed a rough idle

Quote:
Originally Posted by padgett View Post
Check for a P030x code. Particularly a 300, 302, or 304.
Thanks, I was going to do that and then I noticed it is also leaking oil from somewhere. It was a decent amount but I couldn't tell where exactly so I took it into the dealership yesterday.

I needed them to do a couple of recall items anyway. I'll post back the results.
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Old 03-23-2015, 10:47 AM
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Re: 2012 WK2 3.6 - 43k miles - Developed a rough idle

Here's an update...

The oil on my driveway wasn't engine oil, it is oil from one of the motor mounts that broke. I hope that was the reason the engine feel like it is idling rough.

I am having them do an update on the radio and the trans cal which was available, and do a couple of recall items on it while it is there...plus turn on the trailer harness as I will be adding the tow package to it soon.

Altogether, a bit over $600 (ugh). I should have it back today or tomorrow.
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Old 06-07-2016, 07:11 AM
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Re: 2012 WK2 3.6 - 43k miles - Developed a rough idle

Hi, I have this problem too on my 2011 3.6 with 85K miles. What was the outcome?

Thanks
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Old 06-07-2016, 08:25 AM
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Re: 2012 WK2 3.6 - 43k miles - Developed a rough idle

Broken motor mount.
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