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Old 02-27-2012, 12:15 PM   #421
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Just got a call from my dealer. Driver's side head has been ordered.
Just spoke to dealer. Cyl 2/4/6 head (driver side) is supposed to arrive tomorrow. I should get my Jeep back on Thurs/Fri. Hopefully I'll have another success story to share with everyone.

It seems like the rumored national backorder is not quite as bad as had been reported.

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Old 02-27-2012, 12:53 PM   #422
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Well its my turn. I took my Saraha unlimited born on 10/24/11 in today for the infamous ticking engine. The left side only of course just like the rest of them. When I went to the service counter and told them my problem, the first thing thay asked was "Is it a 3.6?" So they are fully aware of the problems with these Jeeps. The service manager drove it into the shop and about 15 minutes later he came back to make me an appointment to check it out further. I take it in this Friday at 8AM so wish me luck. After reading these post everywhere on the net it seems to be a crap shoot as to weather or not they fix it. I really like this Jeep, its the 3rd one I have owned, so I have high hopes they fix it right without any runaround.

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Old 02-27-2012, 01:45 PM   #423
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OTNewt,,, Mine sounds like your second vid,,, after replaced head.

However they both sound similar,, just the first vid,, before new head sounds more pronouced.

This is strange.

My production again was 1-1.
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Old 02-27-2012, 03:17 PM   #424
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first video- before head replacement but after tappet(lifter) replacement that did not fix the noise

now the video taken today once home in the same garage and taken with same iphone4 as other video and it is the same jeep.

WHAT A DIFFERENCE! Thanks very much for posting the before and after... hopefully now your JK will give you years of trouble-free service. -my ticking sounds just like your second video. THANKS AGAIN!
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Old 02-27-2012, 06:34 PM   #425
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great vid posts. i just picked up a new loner durango with same motor while my benz is being worked on and first thing i did was pop the hood to hear the motor. it has like 5k miles and heard no ticking, sounds like the second video.
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Old 02-27-2012, 11:51 PM   #426
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i sure hope everyone comes out on top and gets their pstars fixed properly. i'm on hold on a '12 until this gets worked out. read the whole thread and now i have a massive headache. gonna pass by the garage on the way to bed and hug my TJ.
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Old 02-28-2012, 12:40 AM   #427
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Yes this forum is a great benefit for those who require information and due to my research here I am now better educated to make a decision. Thanks for the input on this as I now know what to look for.

I am actually in a good position as the dealer said a deposit was not required and he would allow me to keep the vehicle overnight before making a decision.

I do know the dealer I am working with is fully aware of some customers problems with this issue. He was unable to suggest a certain build date for the problem heads and did say that the warranty was strong and any true problems would be taken care of.

We shall see and if all goes well I will pull the trigger on this one and hope for the best. This Rubicon is a manual with dual top and saddle interior with deep cherry exterior. I want leather and the dealer agreed to add the Katzkin leather afterwards without bumping the price of the jeep. Right now I am at 32k so I feel I should take this while available.

Thanks again for the advice...
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Old 02-28-2012, 08:46 AM   #428
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I am the luckiest guy ever.... Just dropped off the wife's Overland Summit for the ticking. Pulled up, handed off the FOB thing, guy went out and checked mileage, started it up and came back in and said "wow, that's bad." I just smiled because that is how it goes in this house. My wife's was built 9-11 same as mine. This just sucks but I know my dealer is going to fix it. I broke them in with mine...
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Old 02-28-2012, 09:07 AM   #429
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Quick update.... As soon as I posted the dealership called me. My wife's also needs a cam phaser as well as an intake. Parts are in Atlanta so I should have it back tomorrow afternoon. My dealership has become awesome!
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Old 02-29-2012, 06:55 AM   #430
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Have they done anything to the engine design to remedy this going forward?
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Old 02-29-2012, 07:09 AM   #431
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Quote:
Originally Posted by otnewt
so here are the before and after the head replacement videos. the second was taken today as soon as I got home from the dealership.

first video- before head replacement but after tappet(lifter) replacement that did not fix the noise


now the video taken today once home in the same garage and taken with same iphone4 as other video and it is the same jeep.



I think everyone should now be able to tell what "ticking" we who have a ticking motor are talking about. Second video of course has ticking noises that are to be expected coming from an engine but the sewing machine type ticking in the first video is the ticking that should not be there.
Thanks for posting.

My 9/11/11 build with 3,000+ miles purrs like a kitten so far. Hoping the best for everyone and their babies!!
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Old 02-29-2012, 10:31 AM   #432
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Have they done anything to the engine design to remedy this going forward?
Nothing wrong with the engine design itself. The head design is a bit noisy (see second video) due to a number of things -- the design of the hydraulic lash adjusters, the steepness of the curves on the cam (this is a very "hot" cam, tamed by the VVT for low-down power), the fact that the intake manifold is plastic and the exhaust manifold is a thinwall casting built into the block itself (i.e., no mass of cast iron to absorb valvetrain noise). This noise is fundamental to the design of this head, and will always occur, but is harmless. That said, it shouldn't have been clacking like in the first vid, and been a ticking like in the second vid.

It'd be interesting to look at head numbers and figure out whether there was one particular run of heads that had problems with a bore instrument out of alignment, and figure out how to make sure it doesn't happen again,and I'm sure Chiseler has already done that and fixed it internally and is going to wait for the affected parts that are out in the field to fail before fixing them because that's cheaper for them to do (sigh!), but the fundamental design itself is pretty good.
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Old 02-29-2012, 10:47 AM   #433
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Nothing wrong with the engine design itself. The head design is a bit noisy (see second video) due to a number of things -- the design of the hydraulic lash adjusters, the steepness of the curves on the cam (this is a very "hot" cam, tamed by the VVT for low-down power), the fact that the intake manifold is plastic and the exhaust manifold is a thinwall casting built into the block itself (i.e., no mass of cast iron to absorb valvetrain noise). This noise is fundamental to the design of this head, and will always occur, but is harmless. That said, it shouldn't have been clacking like in the first vid, and been a ticking like in the second vid.

It'd be interesting to look at head numbers and figure out whether there was one particular run of heads that had problems with a bore instrument out of alignment, and figure out how to make sure it doesn't happen again,and I'm sure Chiseler has already done that and fixed it internally and is going to wait for the affected parts that are out in the field to fail before fixing them because that's cheaper for them to do (sigh!), but the fundamental design itself is pretty good.
I'm a big fan of the engine I think its a winner. However I feel bad for those owners that have to wait for it to fail, if they got one that is "out of alignment."
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Old 02-29-2012, 12:00 PM   #434
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Well the good news is that the valve bore issue is apparently a slow failure mode, it doesn't just blow up and leave you by the side of the road, it slowly erodes the valve seat until it throws a code. While the hydraulic lash adjuster bore issue won't produce any engine damage at all, just noise. So you won't end up with a blown-up engine stranding you by the side of the road with either of these problems. So those hoping that Chiseler Corporation issues a recall are probably hoping in vain -- it's not a safety issue, the only thing they're government-mandated to issue recalls on, it's a warranty issue for them to handle as cars come in for service. It'd be nice if those with the bad heads at least got some notice, but who's going to make Chiseler do that? Our current business-friendly government? Yeah right, bang yer head on *that* wall for a while...
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Old 02-29-2012, 12:36 PM   #435
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Now I'm glad I'm waiting for the 2013's.
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Old 02-29-2012, 04:30 PM   #436
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Yeah....I think I'm gonna wait for a '13 (or maybe even a '14)....

Once again the old adage comes to mind: never buy the first year of anything.

I would be SO pissed if I swapped my 8-year-old F150 (which has been absolutely bulletproof and trouble-free) for one of these and had any issues.
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Old 02-29-2012, 04:48 PM   #437
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Yeah....I think I'm gonna wait for a '13 (or maybe even a '14)....

Once again the old adage comes to mind: never buy the first year of anything.

I would be SO pissed if I swapped my 8-year-old F150 (which has been absolutely bulletproof and trouble-free) for one of these and had any issues.
I see a lot of overreacting. I have a 9/11 build date '12 that runs great. I'm glad I didn't wait. Just remember forums offer a skewed sample set - people without problems are less likely to post.
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Old 02-29-2012, 04:52 PM   #438
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"Beware the Ides of March"?

Hopefully I'm in the "good batch" of heads crowd, placed my order monday or will it be a case of "Beware the Ides of March"?
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Old 02-29-2012, 04:59 PM   #439
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I have a 7/27 build JK and haven't felt a need to take it in. My engine is noisy but so is my Harley. Plus I still have a long time left on my 5 yr/100K factory powertrain warranty.
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Old 02-29-2012, 05:12 PM   #440
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I see a lot of overreacting. I have a 9/11 build date '12 that runs great. I'm glad I didn't wait. Just remember forums offer a skewed sample set - people without problems are less likely to post.
Understood but It's not overreacting if it it's your low mileage jk sitting in the shop or left you stranded. I'm sure most people don't have problems but I'm not liking the odds and we have also decided to wait for 2013 in order for Jeep to further sort things. We drove 2 2012 JKU's one leaked and one whistled...both hardtops - my wife was like sorry not for 30K! The power increase was nice but not enough to get us to jump on it right away. I was more concerned with the beta (in the JK) motor....nothing wrong with a little patience. our 2010 JK is just fine and we plan to keep it. I also hold off on first year firearms purchases, another item I'd prefer not to return to the dealer due to malfunctions. To each his own...statistics be damned.
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Old 02-29-2012, 05:14 PM   #441
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Once again the old adage comes to mind: never buy the first year of anything.
Except this is the *second* year of the Pentastar. it was used almost every single Chrysler product other than the trucks last year -- the minivans, the Grand Cherokee, the Charger, the Avenger, the Chrysler 300, you name it, if it wasn't a truck (or truck-derived) and had a V6, it had the Pentastar.

The only thing new for the 2012 is that the block casting is slightly different for the Wrangler Pentastars, which puts a bracket for the alternator top and central. But that has nothing to do with the head casting, which is common between all Pentastars.
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Old 02-29-2012, 05:14 PM   #442
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I see a lot of overreacting. I have a 9/11 build date '12 that runs great. I'm glad I didn't wait. Just remember forums offer a skewed sample set - people without problems are less likely to post.
Understood but It's not overreacting if it it's your low mileage jk sitting in the shop or left you stranded. I'm sure most people don't have problems but I'm not liking the odds and we have also decided to wait for 2013 in order for Jeep to further sort things. We drove 2 2012 JKU's one leaked and one whistled...both hardtops - my wife was like sorry not for 30K! The power increase was nice but not enough to get us to jump on it right away. I was more concerned with the beta (in the JK) motor....nothing wrong with a little patience. our 2010 JK is just fine and we plan to keep it. I also hold off on first year firearms purchases, another item I'd prefer not to return to the dealer due to malfunctions..Hi Points have great warranties but that does not help you when you need it most. To each his own...statistics be damned.
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Old 02-29-2012, 05:15 PM   #443
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Understood but It's not overreacting if it it left you stranded.
Has anybody been left stranded by their Pentastar? Did I miss that one? I thought that everybody who'd had these issues had plenty of time to drive it to the dealership for repair?
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Old 02-29-2012, 05:22 PM   #444
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Understood but It's not overreacting if it it's your low mileage jk sitting in the shop or left you stranded.
Oh, yeah, I agree. I just meant I don't think the problem is as prevalent as you might think if you just read this forum.
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Old 02-29-2012, 05:42 PM   #445
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I have 9/11 build and all is fine.....crap shoot I guess. Hope everyone gets there's fixed quickly.
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Old 02-29-2012, 06:05 PM   #446
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from what i've read, the 2012 Wrangler is selling like hot cakes. production is up, and so are the quantities. I imagine as with anything manufactured in large numbers, there will be some that are not perfect. it sucks and i do feel super bad for those affected.

the good news is the issues are fixable. ..albeit for some; inconveniently

Gethin [dark and swarthy] was born on 09/28/2011. Best five months of my life and vehicle i've ever owned, plain and simple. i accepted the Pentastar for such audible anomalies on day one. Hopefully for many more trouble-free years to come.
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Old 02-29-2012, 07:24 PM   #447
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Took it in Tuesday to have the ticking looked at - it was getting louder since about 800 miles. Left side of engine only, and definitely valve train. Dealership pulled left side apart and discovered #4 exhaust lifter loose in the bore. I felt it myself. Even the wear pattern on the lifter was different. Chrysler rep told tech there were a "few" heads let out of the factory that were out of spec, so a new head is needed. Heads and head gaskets are on national back order, so I am in a rental car. 3100 miles. I'll try and get some relevant pics on Monday.
I have a JKU '12. I did not have ticking (that I noticed) BUT... at around 9100 miles, I had to have my 2nd cylinder replaced. They said it was a factory defect. Manufacture date of 9/11. I had a loaner for 10 days. It runs great now. The only indication that I had was my check engine light when on/off several times so I took it in. It wasn't until the 2nd time of bringing it in did they "discover" the problem.
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Old 02-29-2012, 11:15 PM   #448
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from what i've read, the 2012 Wrangler is selling like hot cakes. production is up, and so are the quantities. I imagine as with anything manufactured in large numbers, there will be some that are not perfect. it sucks and i do feel super bad for those affected.

the good news is the issues are fixable. ..albeit for some; inconveniently

Gethin [dark and swarthy] was born on 09/28/2011. Best five months of my life and vehicle i've ever owned, plain and simple. i accepted the Pentastar for such audible anomalies on day one. Hopefully for many more trouble-free years to come.
"Gethin" lol did you name your Jeep? LOL
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Old 03-01-2012, 12:39 AM   #449
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Opted to order precisely because of this. 2 x's what I wanted (albeit $$$+) on the dealers lot, 2 autos in the right color, more options than wanted, but on the lot, vs. ordering and waiting 90 days. Figgered to hold out and wait for this reason over that. Either way, whatever you have\experience now is solveable. It's a trivial dilemma in the grand scheme of things.
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Old 03-01-2012, 02:17 AM   #450
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Guys,

one more question, i consired this issue somewhat "isolated to some affected" vehicles so would like to take my chances on 2012, but if it ever happened to strike my purchase, how much in dollars will it be resolved without involving dealer warranty thing? i mean i will not be having this 5 year/100k warranty thing...

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