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Topic Review (Newest First)
07-31-2014 11:48 AM
JBADV
Quote:
Originally Posted by demarpaint View Post
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 .
07-31-2014 05:46 AM
demarpaint
Quote:
Originally Posted by JBADV View Post
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.
07-31-2014 05:31 AM
JBADV
Quote:
Originally Posted by demarpaint View Post
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 .
07-31-2014 05:14 AM
gecko4
Quote:
Originally Posted by JeepHerz View Post
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?
07-31-2014 04:02 AM
demarpaint
Quote:
Originally Posted by JeepHerz View Post
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?
07-31-2014 12:13 AM
JeepHerz 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
07-30-2014 10:38 PM
Up Hill Bill
Quote:
Originally Posted by Labrat0116 View Post
I've yet to receive this letter.

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

Good idea:

Attachment 1350009
07-30-2014 10:33 PM
Rubicon_Jim 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.
07-30-2014 10:20 PM
Labrat0116
Quote:
Originally Posted by colder View Post
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 ?
07-30-2014 10:02 PM
JKPaul
Quote:
Originally Posted by colder View Post
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?
07-30-2014 09:35 PM
colder 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
07-30-2014 09:34 PM
colder I got my warranty extension letter last week. I have a 2012 that is approaching 25k. No codes or any issues whatever so far.
07-30-2014 09:18 PM
gecko4
Quote:
Originally Posted by demarpaint View Post
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.
07-30-2014 03:42 PM
demarpaint
Quote:
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.
07-30-2014 12:20 PM
Pressurized
Quote:
Originally Posted by flyfish29 View Post
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.
07-30-2014 12:10 PM
flyfish29 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.
07-30-2014 09:29 AM
JKPaul
Quote:
Originally Posted by gecko4 View Post
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.
07-30-2014 09:26 AM
hypoxic1911 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...
07-30-2014 09:14 AM
Labrat0116 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 ?
07-30-2014 09:11 AM
Labrat0116 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 ?
07-30-2014 09:08 AM
Labrat0116 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!
07-30-2014 08:55 AM
Labrat0116
Quote:
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.
07-28-2014 07:04 PM
UTJeffC 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.
07-28-2014 06:11 PM
gecko4
Quote:
Originally Posted by MichiganUnlimited View Post
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.
07-28-2014 01:14 PM
MichiganUnlimited
Quote:
Originally Posted by gecko4 View Post
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.
07-28-2014 12:19 PM
gecko4 You'll have to wait for codes. Believe it or not, the morning rattle is normal for the 3.6
07-28-2014 11:58 AM
MichiganUnlimited 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?
07-27-2014 09:53 PM
KP50
Quote:
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,
07-27-2014 08:46 PM
TurboRabbit Just got my left cylinder he'd replaced on my 2012 jku. Glad to have it back but disappointed how dirty the tech left my jeep. Antifreeze everywhere and oil down the left side. I cleaned it up so I can check for leaks. Hope this one holds up for me. Don't really notice any huge power gains like others have noted. Also following up on minor issue with the dealer tomorrow. One of the bolt from the air cleaner was just sitting on the hoses... Luck it was still there. Also air box was not secured to the throttle body... Air box just fell off when I was checking filter.
07-26-2014 02:56 PM
gecko4
Quote:
Originally Posted by RockyRiverJeep View Post
There were some early 2013 model year builds that had the non-AC head installed on the engines. If you don't have an AC head, then you were one of them. Chrysler knows this, so don't let a canned e-mail response like that worry you. As far as I understand it, if you have an AA or AB head and the defect rears its head, you will be covered by the warranty extension so long as it happens within 10 years or 150,000 miles, whichever comes first. Anyone who knows different, please advise us.
It would be nice if you could identify the AC head with some certainty. If chrysler put the julian date code in the TSB of the extended warranty, instead of the production date, you could be more certain of what you have. I know there is a julian date of 2062 designating the updated design for a service head.(replacement head) Chrysler did state they built the new design for production engines before they built them for service parts. ( and they caught a lot of flack from dealers for doing so)
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