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Old 04-04-2013, 02:28 PM   #4531
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Originally Posted by SoFlaJeep View Post
I have been reading this thread with a great deal of interest. I purchased a 2013 JK Sahara that went to "E" status on October 18th, 2012 and was delivered on November 1st, 2012. My question is: Is anyone seeing this issue on the 2013's? I don't drive mine a great deal (2500 Miles to date) and it seems that the problem is popping up later on. Anyway would appreciate any input as to this seems to be a 2012 MY problem or if it has spread to the 2013's.

Thanks everyone.
Your 2013 was built with the newest cylinder head revision (AC). That revision was introduced in mid to late July. So far, no one has reported issues with the AC head, to my knowledge. There were a couple very early 13s that went down, but I don't think we had enough details to make any judgement.

you should be fine.

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Old 04-04-2013, 04:34 PM   #4532
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Originally Posted by Blastek View Post

Your 2013 was built with the newest cylinder head revision (AC). That revision was introduced in mid to late July. So far, no one has reported issues with the AC head, to my knowledge. There were a couple very early 13s that went down, but I don't think we had enough details to make any judgement.

you should be fine.
Thanks Blastek! I appreciate the feedback and help.

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Old 04-04-2013, 07:20 PM   #4533
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Wrong!

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Originally Posted by brightsidememe View Post
That sucks having a new jeep with problems. I like the new set up but was worried about the quality. My friend who was an auto workers union told me never to buy a Chrysler product. Unfortunately they have the laziest employees. Wonder if that has anything to do with it
The Jeep work force in Toledo is outstanding, I belief your friend is mistaken on this one. I would guess the motor came from the same Chrysler engine plant that supplies every plant that installs the 3.6 into any model car. I can't belief it is only a Jeep thing. You are right about the Sucking part. Got my 2013 JKUR two weeks ago. Wait and see time, GOOD LUCK TO ALL!!
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Old 04-04-2013, 08:58 PM   #4534
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Originally Posted by brightsidememe View Post
That sucks having a new jeep with problems. I like the new set up but was worried about the quality. My friend who was an auto workers union told me never to buy a Chrysler product. Unfortunately they have the laziest employees. Wonder if that has anything to do with it
Don't worry about him.

His U.A.W. shop steward probably was pissed cause he was hoggin' the dubie and 40 ouncer at lunch and docked him for overtime in the break room.

Same thing goes on over at G.M. and Ford.


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Old 04-04-2013, 09:10 PM   #4535
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Don't worry about him.

His U.A.W. shop steward probably was pissed cause he was hoggin' the dubie and 40 ouncer at lunch and docked him for overtime in the break room.

Same thing goes on over at G.M. and Ford.


That right there is funny!
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Old 04-04-2013, 09:37 PM   #4536
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Build date 01/12 JKU no noise, runs great...CEL on, "ECO" lite not working brought it in for that fix, dealers computer said new left cylinder head needs to be replaced!! Head odered, work due 4/8 engine quiet as hell, runs perfect but they are replacing head at 16K??? No fight, their choice...My CEL off now on it's own 2 weeks while new head was on order, even the "ECO" is working again?? Who the h--- knows, they are even giving me a rental vehicle?

Wolfdog
I've never gotten an cel and my Eco light works well I was getting 12-13 mpg and recently while its gotten warmer I've been getting 15-16 mpg but I have heard the jkus don't get as great ad gas milage as two doors. I have taken it in before but they say its fine also I have had no ticking like in the videos
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Old 04-04-2013, 09:51 PM   #4537
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I have a 2012 with a 9/11 build date and has the ticking. Didnt really think much about it until I saw this thread. Still, plenty of warranty so undies not in a bunch. I called the dealer and explained the issue and if they heard of it. They said bring it in asap as the have had issues with cat converters, ecm or some other electronic issue, replaced cylinder heads and even an engine or 2. Still not concerned and sure it will get fixed. Nice to see the dealership express interest in the concern rather than dismissing it. Goes under the knife next Wednesday....Until then, still runs great, but think this is causing poor gas mileage too....
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Old 04-05-2013, 06:47 AM   #4538
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Don't worry about him.

His U.A.W. shop steward probably was pissed cause he was hoggin' the dubie and 40 ouncer at lunch and docked him for overtime in the break room.

Same thing goes on over at G.M. and Ford.


That might be the funniest thing I have heard all day. Granted, it's only 645am and I haven't had any coffee yet, but still.
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Old 04-05-2013, 06:53 AM   #4539
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ekdigdirt, Any updates on your case?
Chrysler signed for my letter on Monday April 1 (green card came back yesterday). So, they have 30 days, or until May 1, to respond. I hope they just do the right thing, and soon (mostly because I'm sick of driving around with CEL on with a jeep that runs as though it has 360K miles, not the 36K it actually has - and getting 16 mpg on top of it...). I'll keep you posted!
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Old 04-05-2013, 01:19 PM   #4540
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Unhappy

Help Forumers!!! Just took delivery of a 2012 JKU 2 weeks ago. Was actually looking at a few used 2010-2011 models, but the dealership had two remaining 2012 models left and gave me a good deal. Guess they needed to move the inventory with over 15 new 2013s on the lot. And I lked the upgraded interior and more powerful engine.......

Anyway - wish I would have done some research instead of giving into an impulse purchase. Just finding this Pentastar thread NOW. Kinda scary. Can someone "in the know" tell me if I am in the danger zone regarding a cylinder head replacement? (Not being lazy -- there are over 150 pages on this thread!!! -- Can't quite determine how to interpret the numbers!).

Door sticker:
Date of MFR: 12-11
MDH: 122112

Numbers on the cylinder head:
3481A
12910
001000

Am I among those at risk?
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Old 04-05-2013, 01:22 PM   #4541
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If I had to guess, I'd say 10% of 2012s are at risk. You don't need to worry. Odds are with you. Mine is an older one (bought 3/12) and at 10,000, I have no tick or issues.
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Old 04-05-2013, 01:23 PM   #4542
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Help Forumers!!! Just took delivery of a 2012 JKU 2 weeks ago. Was actually looking at a few used 2010-2011 models, but the dealership had two remaining 2012 models left and gave me a good deal. Guess they needed to move the inventory with over 15 new 2013s on the lot. And I lked the upgraded interior and more powerful engine.......

Anyway - wish I would have done some research instead of giving into an impulse purchase. Just finding this Pentastar thread NOW. Kinda scary. Can someone "in the know" tell me if I am in the danger zone regarding a cylinder head replacement? (Not being lazy -- there are over 150 pages on this thread!!! -- Can't quite determine how to interpret the numbers!).

Door sticker:
Date of MFR: 12-11
MDH: 122112

Numbers on the cylinder head:
3481A
12910
001000

Am I among those at risk?
Yes, but do not panic. Absolutely nothing to worry about. The worst case scenario is that you have to drop your jeep off for a couple days. Chrysler is replacing the heads if a problem comes up. The techs are used to it, so it's as straightforward as a brake job to them. Drive and enjoy your Jeep. Don't even think about.
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Old 04-05-2013, 01:37 PM   #4543
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Thanks, Blastek. Will try to relax about it. Love my new JKU, just hope it's not a "ticking" timebomb. Guess I should have gone with the 2013 Rubi for $42K!!! LOL.

Anyway -- what should I be on the lookout for? Noticeable ticking, a CEL, any odd engine performance?

Based on the large amount of people with this issue, is there a typical mileage or timeframe in which this problem arises (if it does)?
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Old 04-05-2013, 01:45 PM   #4544
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Thanks, Blastek. Will try to relax about it. Love my new JKU, just hope it's not a "ticking" timebomb. Guess I should have gone with the 2013 Rubi for $42K!!! LOL.

Anyway -- what should I be on the lookout for? Noticeable ticking, a CEL, any odd engine performance?

Based on the large amount of people with this issue, is there a typical mileage or timeframe in which this problem arises (if it does)?
No problem, enjoy your jeep! These motors have noisy injectors, but if you get a tick, it'll happen early on (less than 15K) and it'll sound very obvious from the driver's side:


Otherwise you'll get a CEL that indicates a multiple misfire on the left bank (cylinders 2,4,6), or a severe reduction in MPG. The CEL can come on at anytime.

Again, just drive it! Preferably with the top down
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Old 04-05-2013, 01:56 PM   #4545
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Yeah -- that ticking sound will be hard to miss! Thanks again for the info. Taking your advice -- beautiful here today -- off with the top and going for a drive!

BTW -- just saw your profile line -- "Tickastar" -- spit coffee out --- you owe me a new keyboard.
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Old 04-06-2013, 04:45 PM   #4546
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FWIW, maybe some peace of mind for some new jeepers.....maybe not.

Unlimited Sport RHD auto. Build date of 3/12, AA heads I'm sure, bought new at 74 miles. No noticeable sound difference from either side of the engine. Somewhere around 7k started noticing the "tick" not real loud but noticeable at idle outside the vehicle.

Since last November noticed 2-3 mpg drop along with the ticking but no CEL and got worried. Took to the dealer in February at 23k and got the "no abnormal sounds" story. Back to them in March and told them I was worried about it since I am a 2 hr. drive from them and depend on this jeep for my livelihood delivering mail. Service manager was sympathetic and got the ok from Chrysler to do the leakdown test on both heads under warranty. Everything checked out ok. Spoke with the tech that did the work and he hadn't worked on many new jeeps but said he was surprised that my jeep had at most 2-3% leakage on any of the valves and considered that outstanding. Said he's tested other newer vehicles (not necessarily jeeps) with much higher leakage and considered normal.

Weather has been getting warmer (now 27k on the clock) and am noticing some improvement in mileage now. Not sure if my station has summer fuel yet or not but I'm starting to believe that the winter fuel, cold starts and denser air may have been the cause of the mpg drop. Ticking still there although no louder. Time will tell........
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Old 04-06-2013, 06:27 PM   #4547
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CEL popped today, built 3/12, ~18600 miles. Took it Autozone for a free scan, misfire cylinder 2. Called the dealer, no questions, set up an appointment for 7:30am Monday. Have the dealers been typically providing loaner cars?
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Old 04-06-2013, 06:33 PM   #4548
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If your dealer doesn't provide a loaner car, call Jeep Customer Assistance and ask them to authorize payment for one.
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Old 04-06-2013, 07:07 PM   #4549
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Noticed a severe drop in milage on my unlimited Sahara. Getting 11.4 mpg with 3.21 gearing. I can't wait to drop this wrangler off to get checked out...
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Old 04-06-2013, 08:58 PM   #4550
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I believe so. But don't worry. ;-)
You are going to have to go back in this thread to really know for sure . Someone here could tell you what page number in particular.
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Old 04-07-2013, 01:17 PM   #4551
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2012 JKU build date of 2/12 30,000 miles. no issues I do see what appears to be AA head.
Is it the AA heads that are the ones with issues?
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Old 04-07-2013, 01:30 PM   #4552
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I was wondering if anyone had the issue of their engine smelling after accelerating fast or going past 4k rpms. Every time I accelerate fast the engine smells and realy gets annoying and even if the top is on and window are up you can still smell it. One of my friends was following me one time and said he could smell it and it didn't smell good
Yes I am just recently smelling that same smell. Just like you said after heavy acceleration. It doesn't smell like exhaust from tail pipe but from the motor. 2012 JKU
Have you found anything out?
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Old 04-07-2013, 01:30 PM   #4553
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I'm not sure if I started to have the ticking in mine, I'll have to check the build date but it is a 2013. It does seem louder than it was when I first got it. I have about 6500 miles on it currently.
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Old 04-08-2013, 01:49 PM   #4554
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I'm not sure if I started to have the ticking in mine, I'll have to check the build date but it is a 2013. It does seem louder than it was when I first got it. I have about 6500 miles on it currently.
I sure hope not. Especially if its an AC head...
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Old 04-10-2013, 08:54 AM   #4555
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So I threw a code yesterday P302 cylinder #2 misfiring i started a thread to quickly find out what it was.
I haven't took my jeep in yet, since this just happened 6:00 last night. I plan on taking it in today.
I have been told I'm going to need a new head now or eventually by fellow forum members.
Was my jeep built along with the others with problem or is this random as if a bad batch of heads were made and scattered?
Is this going to effect anything down the road even when head is replaced?
Are their any symptoms?
Have I been getting worse gas milage?
Am I okay to drive into dealer?
Thanks
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Old 04-10-2013, 08:59 AM   #4556
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So I threw a code yesterday P302 cylinder #2 misfiring i started a thread to quickly find out what it was.
I haven't took my jeep in yet, since this just happened 6:00 last night. I plan on taking it in today.
I have been told I'm going to need a new head now or eventually by fellow forum members.
Was my jeep built along with the others with problem or is this random as if a bad batch of heads were made and scattered?
Is this going to effect anything down the road even when head is replaced?
Are their any symptoms?
Have I been getting worse gas milage?
Am I okay to drive into dealer?
Thanks
What year is it, and what month did you take delivery to it? Do you know if it has an AA or AB head? The info to locate what head is in this thread somewhere, it will show a picture of where to look and what to look for. How many miles are on it?

You can drive it to the dealer, no worries there. Good luck, please report back!
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Old 04-10-2013, 09:38 AM   #4557
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It is a 2012 with 18,500 miles I bought on 12/31/11 so I've had it for 1 year and about 3 months and 18,499 miles
I don't have my build sheet with me I'm at work ill find out build date and which head later today.
Do you know about what page I can find that?
Ill keep posting my progress thanks
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Old 04-10-2013, 09:48 AM   #4558
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^^ Sorry I don't know what page its on, I didn't bookmark it, and I have my settings displaying more posts per page than the default setup. I have a feeling you have an AA head. Where to find the code for the head has been posted a few times in this thread, I'd read it, lots of good info here to tell the dealer if they give you any static.
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Old 04-10-2013, 09:56 AM   #4559
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On page 6 lol thanks you
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Old 04-10-2013, 10:12 AM   #4560
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Glad you found it! Knowledge is power. Good luck!!!!!! Just be sure if they swap the head it will be with an AC head. I'm 99% sure you'll get one, but just make sure!

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