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Topic Review (Newest First)
05-21-2014 06:29 AM
blackrubicon My 2012 started coming on about 13k miles. I clear it sometimes it would stay off a week or so. Lately been coming on sooner. Never runs rough and no loss of power. Calling dealer today. Sure it's a head problem. Throws PO302 code.
05-20-2014 10:50 PM
Blastek
Quote:
Originally Posted by baseballfanz View Post

Shouldn't it be cover under the 5/100 drive train warranty?

☞ Sent from here ☜
Yup. 5/100.
05-20-2014 06:23 PM
baseballfanz
Quote:
Originally Posted by Horneij View Post
I had the check engine light come on shortly after i bought my 2012. And it went out and didn't come back on. Now at 36,600 miles it has come on again and they are saying they have to replace the cylender heads. Lovely!!!!!!!!!!! NOT!!!!!!!!! Thankfully i bought the extended warranty.
Shouldn't it be cover under the 5/100 drive train warranty?

☞ Sent from here ☜
05-20-2014 06:12 PM
Xena1 EVERY 2012 Wrangler will have a head failure! Engineering design fault which does not discriminate!
05-20-2014 03:42 PM
Horneij
Mis-fire here too

I had the check engine light come on shortly after i bought my 2012. And it went out and didn't come back on. Now at 36,600 miles it has come on again and they are saying they have to replace the cylender heads. Lovely!!!!!!!!!!! NOT!!!!!!!!! Thankfully i bought the extended warranty.
12-12-2013 10:23 PM
Imprezin So i may be in the same Boat my jeep been back and forth for the last few weeks. and months $ months ago traction control light went on and stayed on. and weird noise coming from engine. Turns out bad sensor and water pump. finally parts came in last week when i got a check engine light. they replaced the water pump i left everything was good. 2 days and engine light came back on for few hrs. i called them came in and my sensor was ready they switched that out top me engine light is all clear. on the way home light came back on. calling again to bring it back also going to check the code myself tomorrow. my truck has 17,000 miles on it 2012 Unlimited sport.
08-14-2013 04:20 PM
Yellow_Fox Even better!
08-14-2013 08:02 AM
michaeltoc
Quote:
Originally Posted by Yellow_Fox View Post
Yeah I talked to the dealer today and thy said its covered under the 3 years 36,000 mile warranty.
Actually, it's covered under the 5 year/100,000 mile powertrain warranty. (Cylinder heads are an engine component).
08-13-2013 10:36 PM
Yellow_Fox Yeah I talked to the dealer today and thy said its covered under the 3 years 36,000 mile warranty. And I scheduled an appointment at a different deal that had it in stock. For Thursday, I haven't noticed any drop in mpg or rough idling the only rough idling I've noticed is when the car is warming up.
08-12-2013 05:30 AM
michaeltoc
Quote:
Originally Posted by Yellow_Fox View Post
Hey I'm having the same problem with mine. The dealership I went to was truthful about it but also has a waiting period of three weeks and the part is also on back order. Do you guys know what's the worst that can happen with me driving my jeep. Also my jeep has almost 18,000 miles, do you guys know if its still covered under warranty? Thanks
Definitely under warranty. When I had mine done, the "report" found one of the exhaust valves was sticking, and was burned and pitted. I would guess that continued driving would further damage the valve resulting in more misfires, rough idling, and lower milage, but otherwise safe to drive.

I had noticed some rough idling a few weeks prior to the CEL light coming on - so the valve was possibly sticking then, but not causing enough misfires to trigger the CEL.

As for the backorder - I had mine done last week, and it only took a few days for them to get the head (I'm in So. Westchester - not too far from No. Jersey). Perhaps try another dealer?
08-12-2013 12:33 AM
m998dna
Quote:
Originally Posted by perkalater79 View Post
For a lower profit margin vehicle, can you blame them for trying to save a buck by trying to software reset?
Lower profit margin? .. I would bet a weeks pay Chrysler enjoys a healthy 60% margin on this platform.

.
08-12-2013 12:27 AM
Yellow_Fox Hey I'm having the same problem with mine. The dealership I went to was truthful about it but also has a waiting period of three weeks and the part is also on back order. Do you guys know what's the worst that can happen with me driving my jeep. Also my jeep has almost 18,000 miles, do you guys know if its still covered under warranty? Thanks
08-04-2013 01:26 AM
perkalater79 For a lower profit margin vehicle, can you blame them for trying to save a buck by trying to software reset?
08-03-2013 09:32 PM
MikeK46 Amazing that the dealers also pretend that a software "reflash" will fix a mechanical misfire when you walk in, most likely knowing full well that you'll be back shortly.

God I hate those shady lying stealerships...they not only steal your money but your time and sanity.

Funny how I never had any issues with Infiniti, Acura, or Lexus dealerships, though. The service makes you want to go there...though you probably won't ever have to.
08-03-2013 06:25 PM
Xena1 The dealers have learned to lie from Obama! Chrysler sent me an email saying there is no known problem with the 2012 Wrangler cylinder heads! So like Obama we should agree.!NOT!
08-02-2013 08:30 AM
williespop
observations a year later

You know, mine never ran rough, never lost power, never made a ticking noise, never got worse fuel mileage... it was just that the check engine light would not go off. Not being able to use the remote start was the most inconvenient thing about it, up until I had to leave it at the dealership for a week, while they changed the head.
BTW, if you've had that done, check all the wiring harnesses that are supposed to be routed across the the topside... 20K miles AFTER my head replacement, check engine light came on, along with the traction control light... this time I did lose power, and the tranny wouldn't shift automatically (it would bump shift, but the computer had quit controlling shift-point) anyway, I limped into the dealer (different one) and they quickly diagnosed it; the dealer who had replaced the heads had failed to properly secure the wiring harness, and it had worked its way to the point it was in a minor bind, which, over the course of 20K miles, eventually caused it to break a couple of pins in the connector.
My biggest gripe in all this is that Jeep/Chrysler service writers and counter-jockeys are STILL pretending like they don't know there's a problem with those engines. The fact that there are still message boards all over the internets with people going "my CEL came, dealer says its a misfire cyl 2... what up with that; anybody else heard about that?"
Some dealership's service managers are more honest than others, and it's very clear they've been told to play ignorant. I understand they had a big problem, what with fixing the tooling that caused the defect, and then manufacturing enough heads to catch up with the ones already sold, and not slow down production of new ones... but who says you don't slow down production of ones to sell until you're damned sure you fixed all the ones you already sold? That's what a company that wanted to ensure the loyalty of its customers would do. I love my jeep, but I really hate the way Chrysler has dealt with this. I'm in the market for a hiway car (but not a car), and would love to have a Grand Cherokee Overland with a Hemi. But first I have to decide whether to give this company any more of my trade.
08-01-2013 06:34 AM
michaeltoc
Quote:
Originally Posted by perkalater79 View Post
I read the page on finding your build date, but was unclear because it went back and forth. Has anyone successfully identified the date?
I got the date off the Factory Build List. Contact Chrysler (I don't remember if it was by phone or email), give them the VIN, and they emailed me the list.
07-31-2013 09:54 PM
perkalater79 I wondered about the 100k/5yr warranty. That makes sense. Glad to hear it... Thanks for sharing.

Regarding the "ticking" folks are referring to, mine makes more of a clacking clacking noise and I've isolated it (as best I can) to the drive train because it goes always shortly after I depress the clutch and some spinning part slows to a halt. When I let the clutch out, it starts up again.

I assume this is not the ticking related to the engine people are referring to? Right?

Any thoughts on what that might be? Should I take it in and have them look at it? It's been doing it for a long time! Since before 10k miles. Maybe even sooner. Never seemed to cause any issues and I only hear it at very low speeds or when stopped so it's not a nuisance.
07-31-2013 08:40 PM
tcunningham1979 Just crossed 30k miles this weekend. Mine was a day one build as I watched it on the online tracker the day they started building the 12's. No unusual ticking, lack of power or dropped mpg yet. I kind of wish that if it were going to be a problem, that it would go ahead so I could get it over with.

Oh, I beat the snot out of it every day. I am not easy on it by any means.
07-31-2013 07:47 PM
RobCav Friends, I called Chrysler Customer Service number today and had a nice conversation with the rep about this problem. I obviously have concerns about this problem and i needed warranty details. So some of you may know and others wont BUT from what she explained to me, the Cylinder head is part of the 100,000/5 year powertrain warranty that comes with all our Jeeps. Most of us, God willing will be driving and enjoying our JKs well beyond 100,000 miles (Hopefully) so if this cylinder needs to misfire, it needs to happen now so it can be fixed....OR they may recall them all just to replace the HEAD with a more "Robust" one. I have 24,000 miles on mine, Purchased in October 2011, and she runs strong and no ticking noises or anything like that....My only concern is that it seems like it will eventually catch up with every single engine...trying to still figure out why some are effected and others not "Yet"......By the way, off topic, but the Customer Service rep did mention there is a recall notice going out next week about the Transmission Cooler line......no idea what that is but i guess i will be bringing in her in soon..........
07-31-2013 07:23 PM
perkalater79 I'm at 34k and have not had a problem. I ordered my Jeep in Sept '11 and took delivery in Nov '11. I was built in Oct/Nov. at some point there was a delay. For several weeks. I wonder now if that was when they discovered and fixed the issue.

I read the page on finding your build date, but was unclear because it went back and forth. Has anyone successfully identified the date?
07-31-2013 04:46 PM
HashtagAmerica Got a cylinder 6 misfire. I'm planning on travelling 1500 miles round-trip this weekend, will this be a problem? I haven't noticed anything different with how it drives. I've gone on a couple of 200 mile trips the last couple of weeks since it came on and haven't noticed anything. The dealer wouldn't recommend driving on it, but he wouldn't say I can't drive on it either.

(I just hit 20,000 miles fyi, 2012 Unlimited Sahara, got it in May 2012)

What do you guys think?
07-31-2013 04:08 PM
michaeltoc 15,500 miles on my 2012 JK, and got a Cylinder #2 misfire. Dealer was well aware of the cylinder head issue, but said they have had some success with a re-flash of the PCM. 10 miles later - CEL lights up with cylinder #2 misfire. Called the dealer. Bringing it back to get the head replaced.

FWIW - my Build Date is 10/2011.
07-25-2013 03:35 PM
RobCav Shit man, i have 24,000 miles on my 2012 JKU...purchase in October 2011...and now im shittin my pants......if my cylinder has to misfire, then i hope it happens under warranty..........this is bullshit
07-25-2013 12:26 AM
Lusus_Naturae
Quote:
Originally Posted by Jakesdad View Post
Well, I just got a call from my dealer that my Jeep is done but I'm still on vacation with their brand new Dodge Durango. I have to admit this is a pretty sweet ride and has probably been a much better highway vehicle than my Jeep would have been. Also there will be about 2500 miles less wear on my own vehicle so maybe there is a silver lining to this. One thing I want to ask you all is if there is anything I need to ask them or look for when I pick it up to ensure the job was done right, or do I just drive it away and monitor it for leaks and other oddities? Thanks.
You should be able to ask to see the old head and have the show you the numbering on the new head, which should be a build date after 20612. You can check out this thread on how to ID your head's date - http://www.wranglerforum.com/f33/doe...ad-198794.html
07-24-2013 08:09 PM
smokintaps Same deal here. Takin it in tomorrow. Cylinder 6 misfiring at 18,500. Not happy but at least Im not alone.
07-20-2013 11:03 AM
Jakesdad
Quote:
Originally Posted by bearwild View Post
Just got my 2012 Jeep Wrangler Sport back from the dealer. New vehicle with 28,000. miles and had to replace cylinder head. My second jeep, but first Wrangler and I love it. I have always got 19 MPG out of my Jeep Wrangler, today on a short trip I'm only getting 11.8 MPG. What could be wrong with it now. I will contact the dealer Monday. Has anyone had this problem or any ideas? Thanks
Of course it all depends on how it was driven during that short trip vs when you were getting 19. . Maybe drive it a little more to get a good average. I just got mine back from the dealer yesterday. So far the mileage seems to be about the same. It's too soon to tell for sure though. I am still apprehensive that they forgot to tighten something down, reconnect something, or some other little thing that will crop up later. BUT....I'm still glad to get this behind me....maybe......hopefully.
07-19-2013 08:03 PM
bearwild
Cylinder #6 misfire

Just got my 2012 Jeep Wrangler Sport back from the dealer. New vehicle with 28,000. miles and had to replace cylinder head. My second jeep, but first Wrangler and I love it. I have always got 19 MPG out of my Jeep Wrangler, today on a short trip I'm only getting 11.8 MPG. What could be wrong with it now. I will contact the dealer Monday. Has anyone had this problem or any ideas? Thanks
07-16-2013 06:18 PM
Jakesdad Well, I just got a call from my dealer that my Jeep is done but I'm still on vacation with their brand new Dodge Durango. I have to admit this is a pretty sweet ride and has probably been a much better highway vehicle than my Jeep would have been. Also there will be about 2500 miles less wear on my own vehicle so maybe there is a silver lining to this. One thing I want to ask you all is if there is anything I need to ask them or look for when I pick it up to ensure the job was done right, or do I just drive it away and monitor it for leaks and other oddities? Thanks.
07-15-2013 08:30 AM
mdfinest I got my Jeep back and it drives stronger than when I first purchased it.
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