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Old 07-31-2012, 09:29 PM   #1651
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I wanted to take a moment and pass on some info. My JKU Rubi has the same story you've heard numerous times on this thread; ticking noise, followed CEL, and now it needs the head replaced. When we dropped it off at the dealership on Jul 9 was when we learned it needed the head replacement. It has been sitting there ever since waiting for the parts to come in. This was no big deal since they ponied up a nice rental car. My service adviser called yesterday and told me the head was in and he'd have mine ready as soon as he got the head changed out on another 2012 JK that was in front of mine. Well, I just received a call from him this morning and he advised that Chrysler has just called and instructed him to stop all head replacements on the JK's and to return the replacement heads immediately. My service adviser is a pretty good fellow so I don't think he is pulling any funny business. Chrysler did not give him any direction as to how to handle the issue ticking and CEL issue, but he was hoping to get further words from them in the next few days. In the mean time, he wants me to continue driving my Jeep until we can find a solution. I have no issue with that. And if it drops a valve and blows the engine, its under warranty and they will put a new one in it.

It looks like patience will have to be a virtue for all of us. Hopefully they will find a solution to this soon.
Any word on what the issue with the redesigned head was?

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Old 08-01-2012, 07:18 AM   #1652
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Any word on what the issue with the redesigned head was?
More than likely the head that was shipped was not the redesigned model but a NOS (new old stock) pulled from the shelf.

One must remember that these aren't hand made, everything matching motors like a Ferrari motor. They're mass produced from stock piles of parts.

My guess is there is some underlying legal issues going on that Chrysler, or the courts, are not divulging. Probably around them replacing defective heads with more defective heads. I'm sure there are a slew of people with head replacements that are now out of warranty and finding themselves with another defective head. This issue isn't solely a Jeep issue, it affects every vehicle using the 3.6 which has been in production since 2010.

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Old 08-01-2012, 07:54 AM   #1653
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My guess is there is some underlying legal issues going on that Chrysler, or the courts, are not divulging. Probably around them replacing defective heads with more defective heads. I'm sure there are a slew of people with head replacements that are now out of warranty and finding themselves with another defective head. This issue isn't solely a Jeep issue, it affects every vehicle using the 3.6 which has been in production since 2010.
Here's a quote from May 14 on another forum:
"Yes, this has been a problem with the 3.6 motor. I have already replaced 6 cylinder heads on the durango's and the minivans. within the last 2 weeks. And its always the left head. Numbers 2,4 or 6." And here's the link to that page 3.6 Pentastar misfiring - DodgeForum.com

Then another quote I found that may explain what's going on here:
"The other area to be aware of is that if integrated exhaust manifolding isnt designed conscienciously with good focus on water jacket design you can run into issues at the exhaust valve head and valve seat!" Here's the link to that one, worth a look: Pentastar V6 engine • Speed Talk

One sort of odd thing I noticed is chatter among techs on this problem has dropped off recently... guess mums the word.
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Old 08-01-2012, 07:54 AM   #1654
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Originally Posted by Riccochet View Post
More than likely the head that was shipped was not the redesigned model but a NOS (new old stock) pulled from the shelf.

One must remember that these aren't hand made, everything matching motors like a Ferrari motor. They're mass produced from stock piles of parts.

My guess is there is some underlying legal issues going on that Chrysler, or the courts, are not divulging. Probably around them replacing defective heads with more defective heads. I'm sure there are a slew of people with head replacements that are now out of warranty and finding themselves with another defective head. This issue isn't solely a Jeep issue, it affects every vehicle using the 3.6 which has been in production since 2010.
I was thinking along those lines, and was hoping the member that had that issue would post back. It was probably NOS as you said. Good point about people being out of warranty, the engine has been in use a few years now and I bet there are a lot of people with over 100K on that engine. I'm thinking 2012 Wranglers, and that's just not the case.
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Old 08-01-2012, 11:51 AM   #1655
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Any word on what the issue with the redesigned head was?
No words yet. I called the dealership and spoke with the director of the service department. He said he has personally contacted Chrysler but had yet to get any information back from them. Said he would call as soon as he heard something. I get the feeling the check is in the mail.

To ensure I actually do get a response, I mailed out certified Florida Lemon Law Paperwork to Chrysler yesterday. They have 10 days upon receipt to respond with a plan to fix or they will own a slightly used 2012 JKU with a glowing CEL. I expect I will be hearing from them shortly. I like my Jeep, but my patience are wearing thin. I'll keep you posted.
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Old 08-01-2012, 11:58 AM   #1656
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No words yet. I called the dealership and spoke with the director of the service department. He said he has personally contacted Chrysler but had yet to get any information back from them. Said he would call as soon as he heard something. I get the feeling the check is in the mail.

To ensure I actually do get a response, I mailed out certified Florida Lemon Law Paperwork to Chrysler yesterday. They have 10 days upon receipt to respond with a plan to fix or they will own a slightly used 2012 JKU with a glowing CEL. I expect I will be hearing from them shortly. I like my Jeep, but my patience are wearing thin. I'll keep you posted.
Thanks for the update. I wish you the very best of luck, if it was my vehicle I'd be doing exactly what you have done.
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Old 08-01-2012, 01:04 PM   #1657
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Good man Bruce! Good man!
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Old 08-01-2012, 05:26 PM   #1658
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This is quoted from the allpar thread. The parts delay part is not entirely accurate, but the problem with the new head might explain the recent issue in this thread.

"Looks like there is a new problem with the new head.The Wrangler head is still on restriction and you have to call STAR to get the ok to repair it.I called on one this morning and got the ok to order one(that we cant for another 2 months because of the 1 every 7 days rule) and STAR said to check the cam bore because they have had problems with cams locking up in the new head.STAR said it was because the were so far behind on the heads that they were rushing and boring the cam journals.We still have cars here from 2 months ago waiting to get heads and we cant even order any more for another 2 months.So if someone was to come in today their car would be here for about 3 months before it was fixed "

AllparForums: AN: Update: Rare Pentastar problem - Mopar News and Rumors - Allpar, the Chrysler Car Community - Page 10
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Old 08-01-2012, 05:58 PM   #1659
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Lots of lemon law claims coming soon if this is true. 30 days. Period.
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Old 08-01-2012, 06:40 PM   #1660
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I'll be pretty pissed if I have to go through a lemon on my 2012 JKR. I just went through one on my 2011 F150. P.I.T.A.
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Old 08-01-2012, 06:53 PM   #1661
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Picked her up today. Definitely quieter. Riding great. I'm going to keep an eye on MPG and see if it improves now. I'll post a before and after vid if I get a chance. Didn't have a loud tick but it was noticeable.

Just happy to have my Jeep back! Especially after 2 weeks in a PT Cruiser.
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Old 08-01-2012, 06:55 PM   #1662
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I just read thru all 12 pages of the Allpar forum posts referenced above. Am now officially freaked out. A common opinion ( there and elsewhere) is "odds are it won't happen to most engines, and if it doesn't happen to you you're all set so don't worry about it".

Here's why that's a bad answer: I love my jeep and have no plans to,sell it, but would you buy a used 2012 Wrangler right now, 3 years from now, or when the power train warranty has expired? When you buy a new vehicle, expected resale value is part of the equation, and this is turning into a game changer...Chrysler needs to make this right for everyone, not just those needing new heads. Lifetime power train warranties for all 2012 Wranglers would be a proactive and appropriate next step.
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Old 08-01-2012, 06:56 PM   #1663
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Originally Posted by ndrugby
Picked her up today. Definitely quieter. Riding great. I'm going to keep an eye on MPG and see if it improves now. I'll post a before and after vid if I get a chance. Didn't have a loud tick but it was noticeable.

Just happy to have my Jeep back! Especially after 2 weeks in a PT Cruiser.
Sweet, glad to hear that you are back behind the wheel
Keep us updated as to the repair efficacy
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Old 08-01-2012, 06:58 PM   #1664
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Originally Posted by NHRubi
I just read thru all 12 pages of the Allpar forum posts referenced above. Am now officially freaked out. A common opinion ( there and elsewhere) is "odds are it won't happen to most engines, and if it doesn't happen to you you're all set so don't worry about it".

Here's why that's a bad answer: I love my jeep and have no plans to,sell it, but would you buy a used 2012 Wrangler right now, 3 years from now, or when the power train warranty has expired? When you buy a new vehicle, expected resale value is part of the equation, and this is turning into a game changer...Chrysler needs to make this right for everyone, not just those needing new heads. Lifetime power train warranties for all 2012 Wranglers would be a proactive and appropriate next step.
That would be way too upright for the common industry, but could always happen. Fingers crossed. At least they could offer lifetime head replacement if not full power train
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Old 08-01-2012, 11:03 PM   #1665
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Sweet, glad to hear that you are back behind the wheel
Keep us updated as to the repair efficacy
Thanks and will do.
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Old 08-01-2012, 11:23 PM   #1666
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Created a quick video of before and after. There is definitely a difference. I even moved in closer on the after, and you can't hear that tick tick tick tick...

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Old 08-02-2012, 09:23 AM   #1667
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Has anyone gotten confirmation that this has been fixed for 2013? I thought i read that this was only an issue with the earlier 2012 but not sure...
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Old 08-02-2012, 09:33 AM   #1668
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Created a quick video of before and after. There is definitely a difference. I even moved in closer on the after, and you can't hear that tick tick tick tick...

I honestly don't hear the difference. Listened 4 times
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Old 08-02-2012, 09:49 AM   #1669
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I honestly don't hear the difference. Listened 4 times
I'm glad I wasn't the only person that thought that! Maybe they all make the tick and it just takes a very keen sense of hearing to notice it.
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Old 08-02-2012, 09:53 AM   #1670
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Hi First post, Long time lurker and long time Jeep owner. Despite just purchasing a 2012 JKU to replace my lifted and aging WJ, some concern about the heads.

Is there a sticky for successful dealer repair shops? Would be intrested in hearing about success stories (so far) in DFW.
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Old 08-02-2012, 09:58 AM   #1671
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I'm glad I wasn't the only person that thought that! Maybe they all make the tick and it just takes a very keen sense of hearing to notice it.
either that or this is like listening to hear symphony orchestra via cell phone a friend is holding up for you

it's a very low fidelity audio reproduction.
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Old 08-02-2012, 10:04 AM   #1672
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If rugby heard the difference then there is one, we know our vehicles the best, others are always harder to convince, how many dealers and techs never hear our complaint sounds
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Old 08-02-2012, 10:09 AM   #1673
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It's hard to hear cause my tick was so slight. But live it's even more pronounced.

The first one is louder and I think that's probably because there is a tick an the valve noise.

I can hear the difference in the video, but maybe that's because I've heard it live. It's more pronounced with the hood closed because of the volume difference, but I don't have a before video with good closed.

Oh well. Tick or not, I got a CEL and have a new head. Whether that solution worked completely we'll find out in time.

Good luck to all of you having issues.
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Old 08-02-2012, 11:58 AM   #1674
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I honestly don't hear the difference. Listened 4 times
Pretty obvious difference to me.

I can hear a single, discordant, louder tick of (probably) one of the valves in the before recording. In the after, the ticking is all even.
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Old 08-02-2012, 12:02 PM   #1675
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Wow - the tick seems so obvious to me, I'm amazed that some of you can't hear it!
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Old 08-02-2012, 12:11 PM   #1676
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Wow - the tick seems so obvious to me, I'm amazed that some of you can't hear it!
Yours wasn't ticking when I drove it right?
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Old 08-02-2012, 12:15 PM   #1677
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Yours wasn't ticking when I drove it right?
Nope. Still doesn't tick. Well, it did twice for about 3 seconds on startup, that's it.

Now this POS Patriot they've got me in...I think it has an exhaust leak or something cuz it sure does make some weird noises.
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Old 08-02-2012, 12:19 PM   #1678
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Wow - the tick seems so obvious to me, I'm amazed that some of you can't hear it!
I could hear that no problem....I'm sure it was more pronounced live with the hood closed but I could still hear it in the video clip. Between the recording device and the different playback devices we are all using, I'm sure some may have trouble hearing it.
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Old 08-02-2012, 12:25 PM   #1679
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Pretty obvious difference to me.

I can hear a single, discordant, louder tick of (probably) one of the valves in the before recording. In the after, the ticking is all even.
Listened again in total quite. I do hear ticking in both, however first is more pronounced. You have o admit there is ticking in second one. Mine ticks very quietly. When T dealer the other day, had the tech manager listen and he showed me other pentastar engines and they all have a slight tick. THEY HAVE ONLY HAD ONE GRAND CHEROKEE WITH A HEAD REPLACEMENT. based on their high volume of sales, guess this is pretty good and obviously not going to effect all pentastar engines.
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Old 08-02-2012, 12:29 PM   #1680
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Has anyone gotten confirmation that this has been fixed for 2013? I thought i read that this was only an issue with the earlier 2012 but not sure...
My question as well. I nearly pulled the trigger on a '12, but decided against it due to this problem. Hoping the '13's have it fixed.

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