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Old 07-27-2014, 10:53 PM   #5971
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Originally Posted by RockyRiverJeep View Post
Are the letters only going out to people who own Jeep Wranglers with the original AA head and have yet to get the AA head replaced?

I'm curious, is there also a warranty extension for folks who have had the original AA head replaced with the AB or AC head?
The head on this '12 JKU I recently bought used was replaced over a year ago, there was a blue parts tag still stuck to the head with AC suffix and the dealer work order says the part number was the AC head.

I recently got the letter saying the warranty was extended to 10yr/150K for the LH head,

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Old 07-28-2014, 12:58 PM   #5972
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I've got a 2014 JKU, 3.6 and I am hearing a rattle on start ups. We have 15k miles on it. It's not throwing any codes, and otherwise runs well. But man, I hate starting it and hearing about 8-10 clatters for that first second of run time. It does it with every cold start (even if it's 80 degrees outside). If I bring it in will they replace the head, or will I have to wait for codes and/or catastrophic failure?

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Old 07-28-2014, 01:19 PM   #5973
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You'll have to wait for codes. Believe it or not, the morning rattle is normal for the 3.6
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Old 07-28-2014, 02:14 PM   #5974
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You'll have to wait for codes. Believe it or not, the morning rattle is normal for the 3.6
OK. That makes me feel better in one way (since it is "normal", means nothing is wrong) but worse in another way (just seems sloppy).

So I may drive it for 150k miles like that, and never have an issue?

Is there a different oil that I should use to minimize that? I don't know what is in it now, my wife's daily driver, maintained by the dealership.
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Old 07-28-2014, 07:11 PM   #5975
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OK. That makes me feel better in one way (since it is "normal", means nothing is wrong) but worse in another way (just seems sloppy). So I may drive it for 150k miles like that, and never have an issue? Is there a different oil that I should use to minimize that? I don't know what is in it now, my wife's daily driver, maintained by the dealership.
I just re read your initial post on this topic. Since you have a 2014, you definitely have the updated head already, so it probably won't fail. As far as the oil goes, it's spec'd at 5w20. Your owners manual, I believe, states 5w30 could also be used. Run it by the dealer, so there is no warranty issue, and try the 5w30 next oil change. I'm not sure it will do anything, but it's worth a try.
Make a note of the pitch/amount of clatter with both oils and let us know.
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Old 07-28-2014, 08:04 PM   #5976
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My '12 used to chatter loudly on cold start until I changed the oil. Since then, it has been fairly quiet, but still there if you listen close.

On a side note, I also got my warranty extension letter last week. I'm at 30k miles and have no symptoms. Same mpgs, no new noises, no loss of power.
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Old 07-30-2014, 09:55 AM   #5977
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Originally Posted by MichiganUnlimited View Post
I've got a 2014 JKU, 3.6 and I am hearing a rattle on start ups. We have 15k miles on it. It's not throwing any codes, and otherwise runs well. But man, I hate starting it and hearing about 8-10 clatters for that first second of run time. It does it with every cold start (even if it's 80 degrees outside). If I bring it in will they replace the head, or will I have to wait for codes and/or catastrophic failure?
Go look at the Part# on the left head to see if it ends in "AC". Report back.
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Old 07-30-2014, 10:08 AM   #5978
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Well, add another 2013 JK to the list.

I just had the left head replaced at the Dealer yesterday on my 2013 JK Sport.

It did pop up a CEL with the P302 Code. My JK only has 8,800 miles on it.

The Service Mgr stated the engine Failed a Leakdown test and that #2 cylinder had a burnt exhaust valve.

The engine runs much smoother now and has a noticeable power increase! I did notice the engine stumbling a bit on acceleration before and the idle was a bit rough at times. The exhaust did smell rich as well. It wasn't really bad enough that it deemed getting it checked out though. Guess I was wrong! lol!

I have yet to see the reason that this issue primarily effects the LEFT head and in particular cyclinder #2. Has anyone found the reason for this ?

BTW, a rental/courtesy car IS covered under the factory warranty for this issue AND the dealers DOES get reimbured from Chrysler for it. Don't let the Service Mgr bullshit you on this! Otherwise, the will lie and said the did give you a rental can AND pocket the money from Chrysler! Don't think they won't!
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Old 07-30-2014, 10:11 AM   #5979
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I asked the Service Mgr about the extended warranty on the head and he was clueless. He did state I should have received a letter about the head (which I did not). He also said my JK's engine still has the 7yr/100,000 mile warranty on it.

Can someone scan their letter about this extended warranty ?
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Old 07-30-2014, 10:14 AM   #5980
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Question

Another thing he said is the "RL" on the new part # RL141353AC for the new head means "RE-LABELED".

I found that odd.

So what did Chrysler actually do to the new heads to remedey that problem ?
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Old 07-30-2014, 10:26 AM   #5981
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can someone post a video/audio of this ticking sound that indicates a bad head? Like a few others, I hear some ticking/rattling for the first minute after starting, but then the noise subsides a bit...
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Old 07-30-2014, 10:29 AM   #5982
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You'll have to wait for codes. Believe it or not, the morning rattle is normal for the 3.6
Mine, nor my brother-in-laws, has the morning rattle.
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Old 07-30-2014, 01:10 PM   #5983
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Early build 2012 here. 25,000 miles and no morning rattle. It still Runs smooth. I fear mine will fail next summer mid trip when I drive from NH to the Rockies. I don't drive in interstates much and NH is cool mostly. I would hate to be stuck doing the repair ON the trip.
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Old 07-30-2014, 01:20 PM   #5984
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Early build 2012 here. 25,000 miles and no morning rattle. It still Runs smooth. I fear mine will fail next summer mid trip when I drive from NH to the Rockies. I don't drive in interstates much and NH is cool mostly. I would hate to be stuck doing the repair ON the trip.
It is not a catastrophic failure and you can go many miles before the repair is done.
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Old 07-30-2014, 04:42 PM   #5985
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Originally Posted by MichiganUnlimited View Post
I've got a 2014 JKU, 3.6 and I am hearing a rattle on start ups. We have 15k miles on it. It's not throwing any codes, and otherwise runs well. But man, I hate starting it and hearing about 8-10 clatters for that first second of run time. It does it with every cold start (even if it's 80 degrees outside). If I bring it in will they replace the head, or will I have to wait for codes and/or catastrophic failure?
It could be "normal" because of how the oil filter is situated on those engines. Even though the 2014 uses a redesigned filter with a Anti-Drain Back Valve some still have some start up noise.

It is scary to see a few 13's with the problem and now possibly a 2014. Early built 2013's could still have AB heads. There's no excuse for 2014's having a problem though.
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Old 07-30-2014, 10:18 PM   #5986
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It could be "normal" because of how the oil filter is situated on those engines. Even though the 2014 uses a redesigned filter with a Anti-Drain Back Valve some still have some start up noise. It is scary to see a few 13's with the problem and now possibly a 2014. Early built 2013's could still have AB heads. There's no excuse for 2014's having a problem though.
Well, you have to remember it's still the same engine design. They made a minor change, which brought the failure rate down from say 20% to an acceptable level of 3 to 5%. (I'm only guessing at the numbers, but you get my point) There will still be failures, but at a much lower percentage rate than before.
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Old 07-30-2014, 10:34 PM   #5987
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I got my warranty extension letter last week. I have a 2012 that is approaching 25k. No codes or any issues whatever so far.
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Old 07-30-2014, 10:35 PM   #5988
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Mine does the morning clatter too, but my last Jeep also did. Just thought it was the sound of a cranky Jeep that didn't want to get out of bed :P
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Old 07-30-2014, 11:02 PM   #5989
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Mine does the morning clatter too, but my last Jeep also did. Just thought it was the sound of a cranky Jeep that didn't want to get out of bed :P
are you running synthetic oil?
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Old 07-30-2014, 11:20 PM   #5990
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I got my warranty extension letter last week. I have a 2012 that is approaching 25k. No codes or any issues whatever so far.
I've yet to receive this letter.

Could you (or someone) scan their letter and post it here please ?
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Old 07-30-2014, 11:33 PM   #5991
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Got my warranty extension letter a couple days ago. 10 year 150k miles. Had my head replaced at 23,000 miles on my '12JKUR. I'm at 38,000 miles now.
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Old 07-30-2014, 11:38 PM   #5992
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I've yet to receive this letter.

Could you (or someone) scan their letter and post it here please ?

Good idea:

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Old 07-31-2014, 01:13 AM   #5993
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Good luck if you have to have ANY warranty work done. My left head was replaced a couple of weeks ago. Working on some mods this weekend and realized the dealer attached one clip and one bolt on the entire intake. They didn't bother tightening the clamp to the throttle body either. The entire intake was barely holding on. Oh, and they couldn't find my passenger side noise.....which I thought was exhaust related. Apparently the missing bolt on the top of the exhaust manifold was tricky to notice.

Attachment 1350153
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Old 07-31-2014, 05:02 AM   #5994
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Good luck if you have to have ANY warranty work done. My left head was replaced a couple of weeks ago. Working on some mods this weekend and realized the dealer attached one clip and one bolt on the entire intake. They didn't bother tightening the clamp to the throttle body either. The entire intake was barely holding on. Oh, and they couldn't find my passenger side noise.....which I thought was exhaust related. Apparently the missing bolt on the top of the exhaust manifold was tricky to notice.

Attachment 1350153
Quality work at its best. Kudos for checking. The thought of having the dealer touch a new engine sickens me.

Did you take it back and make them to do it right? Frightening isn't it?
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Old 07-31-2014, 06:14 AM   #5995
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Good luck if you have to have ANY warranty work done. My left head was replaced a couple of weeks ago. Working on some mods this weekend and realized the dealer attached one clip and one bolt on the entire intake. They didn't bother tightening the clamp to the throttle body either. The entire intake was barely holding on. Oh, and they couldn't find my passenger side noise.....which I thought was exhaust related. Apparently the missing bolt on the top of the exhaust manifold was tricky to notice.
Now that's odd, it looks like the Julian date code on your new head is 3041A. That would make it an old AA head design. I'd definitely investigate that if I were you, as I didn't think Chrysler was suppose to install those. Hopefully, I'm reading that code wrong. What part number does your invoice list?
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Old 07-31-2014, 06:31 AM   #5996
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Quality work at its best. Kudos for checking. The thought of having the dealer touch a new engine sickens me.

Did you take it back and make them to do it right? Frightening isn't it?
X2
I have not been impressed with the dealer repairs , very lax quality control .

I am using Pennzoil Euro L 5w30 , full synthetic . The morning start noise is not as loud as with the 5w20 , and it does not happen every time .
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Old 07-31-2014, 06:46 AM   #5997
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X2
I have not been impressed with the dealer repairs , very lax quality control .

I am using Pennzoil Euro L 5w30 , full synthetic . The morning start noise is not as loud as with the 5w20 , and it does not happen every time .
There are a few good techs, the problem is having one of them assigned to your vehicle.

See how the noise is when it gets cold again, it should be interesting to see if the 30 grade oil reduces start up noise on a cold morning.
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Old 07-31-2014, 12:48 PM   #5998
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There are a few good techs, the problem is having one of them assigned to your vehicle.

See how the noise is when it gets cold again, it should be interesting to see if the 30 grade oil reduces start up noise on a cold morning.
The Pennzoil 5w30 Euro L Synthetic meets Jeep / Fiat specs . I've been using the 5w30 for a few thousand miles . The noise is now intermittent . The engine used to rattle every time it started , if it sat 20 min or more . It was never really loud , but I could hear it . The dealer had a few 2012s on the lot , and I test drove a couple of them . Both of the 2012s were really loud on a cold start .
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Old 09-10-2014, 11:45 AM   #5999
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Be sure to call Chrysler Customer Care (1-877-426-5337) and report the situation. You'll be given a case number. Give that case # to the dealership. You should receive a rental vehicle. Figure on 1-3 days providing every part needed is in stock.
I bought my 2012 Rubicon used 3 months ago. The first time my CEL light came on I asked the dealership to run leak down test. They did not, just reset it after having my Jeep for a week (but did fix the trans tube recall item). A month later my CEL is back on. I have 24K mi. on the Jeep. The dealership won't offer me a free loaner even though the issue is the same. Customer Care is also being difficult about the loaner, putting blame on the dealerships. I told Chrysler they need to Man Up. I'm still on hold as we speak as they claim they are trying to locate a dealership in my vicinity that can replace my head and give me a free loaner. Overall I'm very disappointed in the dealership and Chrysler Customer Care. Lets see how they turn a negative into a positive...

Ok--- Chrysler rep did give me a case number and advised dealership will give me a free loaner (when they get one back) until engine diagnosis is done (and will do a more exhaustive evaluation of cylinder head beyond reset - I assume that means leak-down test). If it is the cylinder head, I then will be given a rental I have to pay for, but can then submit the invoice to Chrysler for reimbursement.

Meanwhile, Customer Care said I can drive vehicle with light on until dealership finds time for me. They also mentioned the dealership is currently 2.5 days behind doing basic evaluations... I suppose when the system is designed to fix the same problem multiple time on the same vehicle this is what happens.

Dealing with the car company bureaucracy reminds me of times when I've had to deal with Chinese or Russian regulated businesses. Not surprising, but painful and very time consuming.
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Old 09-10-2014, 10:36 PM   #6000
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Yes, you can drive your Jeep around before the repairs are made. No harm will be done.

You'll only receive a rental vehicle after the diagnosis of a bad head discovered during the leak-down test. When you schedule the appointment for the repairs, the dealership should make sure you are reserved for one of their cars or usually an outside rental car company that they deal with. This way your rental car is ready for you after you drop your car off for the repairs.

I didn't have to pay for a rental car when my head was replaced in June 2013. The dealership is the one who should be submitting for re-imbursement for the rental. Unless there was a change in Chrysler's stance on this recently, I would directly press Chrysler Customer Care to make the dealership submit. IMO, it smells as if the dealership is pushing the responsibility off onto you.

Good luck.

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