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Old 04-19-2013, 11:09 AM   #4651
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So whats the cost of head replacement when warranty is up?

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Old 04-19-2013, 05:02 PM   #4652
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Mine gets a stumble at at idle while sitting at a light. I know its only a matter of time.

I had a turd 3.0 ranger with the infamous exhaust valve seat issue. Thats how it started.... rough idle, then a stumble and eventually a CEL. Compression on that cylinder was down to 90psi. Didn't even bother checkkng leakage as I knew what it was.
Mine has an uneven idle/stumble too. Time will tell.

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Old 04-19-2013, 05:07 PM   #4653
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~19200 miles, build date 3/2012. I took the Jeep in on 4/8 when the CEL popped "Misfire, cylinder #2." They said the PCM was bad and replaced it on 4/13. On 4/15 the CEL popped again, with the same code. I took it in today, no hesitation, they are replacing the head. They gave me a loaded Chrysler 300 for a loaner. I should have it back on Monday. Tate Jeep in Glen Burnie. If I get her back on time, I'll be happy with the service. I'm actually kind of relieved because it felt like a dark cloud was always hanging over the Jeep.
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Old 04-19-2013, 05:29 PM   #4654
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~19200 miles, build date 3/2012. I took the Jeep in on 4/8 when the CEL popped "Misfire, cylinder #2." They said the PCM was bad and replaced it on 4/13. On 4/15 the CEL popped again, with the same code. I took it in today, no hesitation, they are replacing the head. They gave me a loaded Chrysler 300 for a loaner. I should have it back on Monday. Tate Jeep in Glen Burnie. If I get her back on time, I'll be happy with the service. I'm actually kind of relieved because it felt like a dark cloud was always hanging over the Jeep.
Took mine to heritage on harford rd I went through same sequence got mine done couple days ago
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Old 04-19-2013, 05:51 PM   #4655
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~19200 miles, build date 3/2012. I took the Jeep in on 4/8 when the CEL popped "Misfire, cylinder #2." They said the PCM was bad and replaced it on 4/13. On 4/15 the CEL popped again, with the same code. I took it in today, no hesitation, they are replacing the head. They gave me a loaded Chrysler 300 for a loaner. I should have it back on Monday. Tate Jeep in Glen Burnie. If I get her back on time, I'll be happy with the service. I'm actually kind of relieved because it felt like a dark cloud was always hanging over the Jeep.
Someone should tell Chrysler to audit all these dealers replacing lifters and PCMs. They charge Chrysler for the labor when they know it's a complete waste of time. Makes it worse for the rest of us with legit warranty claims.

Replacing the PCM for a misfire code is just beyond words.
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Old 04-19-2013, 06:31 PM   #4656
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My 2012 has started ticking pretty bad when I start it in the morning. Sadly, it only has 682 miles on it, yet it sounds worse than a diesel!
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Old 04-19-2013, 06:44 PM   #4657
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Someone should tell Chrysler to audit all these dealers replacing lifters and PCMs. They charge Chrysler for the labor when they know it's a complete waste of time. Makes it worse for the rest of us with legit warranty claims.

Replacing the PCM for a misfire code is just beyond words.
The mechanic told me that my PCM was all "red." He said he couldn't figure out how the vehicle was operating with the PCM completely dead. (Obviously wasn't.) He asked how I got the first code and I said I took it to Autozone, he said their scanner probably fried the PCM. Is that possible?
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Old 04-19-2013, 07:45 PM   #4658
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Old 04-19-2013, 08:25 PM   #4659
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The mechanic told me that my PCM was all "red." He said he couldn't figure out how the vehicle was operating with the PCM completely dead. (Obviously wasn't.) He asked how I got the first code and I said I took it to Autozone, he said their scanner probably fried the PCM. Is that possible?
not possible. More than likely he did not set up the diagnostic equipment correctly.
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Old 04-19-2013, 11:50 PM   #4660
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Wow. Picture is worth a thousand words as they say.
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Old 04-20-2013, 06:02 AM   #4661
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Someone should tell Chrysler to audit all these dealers replacing lifters and PCMs. They charge Chrysler for the labor when they know it's a complete waste of time. Makes it worse for the rest of us with legit warranty claims.

Replacing the PCM for a misfire code is just beyond words.

Chrysler is the one mostl likely dicatating that dealers take these steps first not the other way around.
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Old 04-20-2013, 09:24 AM   #4662
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Chrysler is the one mostl likely dicatating that dealers take these steps first not the other way around.
Exactly. You wouldn't believe the red tape I have to deal with at BMW. I have to replace a part I know won't fix the issue because that's what BMW's tester says to do. If I fix what I know the issue is and I don't have a specific authorization within a test plan in the tester, regardless of whether the car is fixed we run the risk of BMW kicking the claim. It costs them more money in the long run and pisses of techs and customers but that's how they want it. Bean counters have ruined the business.
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Old 04-20-2013, 10:13 AM   #4663
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Someone should tell Chrysler to audit all these dealers replacing lifters and PCMs. They charge Chrysler for the labor when they know it's a complete waste of time. Makes it worse for the rest of us with legit warranty claims.

Replacing the PCM for a misfire code is just beyond words.
A PCM can't cause a misfire issue? You are referring to the same PCM that controls the coil drivers & that controls the injector pulses & reads the cam & crank signals to know when & which coil to fire & injector to pulse? A PCM can cause a misfire very easily.
And yes we have certain things we have to do before we can just put a head on. Chrysler makes us do certain things first. If we don't do them they can deny the claim & not pay us for the work completed even if we fixed the vehicle. We have to flash the PCM with updated software first & some vehicles are fixed with just a flash & then others need a head or maybe some other part replaced.
And aftermarket scan tools can damage modules. If you have a electrical spike or loose power while checkign or programmiong a module it can damage it. Now did Autozone damage that PCM? I doubt it. Sometimes modules pop up red ( unresponsive ) on the topology map cause they aren';t awake then they turn blue or yellow in a second.
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Old 04-20-2013, 10:45 AM   #4664
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~19200 miles, build date 3/2012. I took the Jeep in on 4/8 when the CEL popped "Misfire, cylinder #2." They said the PCM was bad and replaced it on 4/13. On 4/15 the CEL popped again, with the same code. I took it in today, no hesitation, they are replacing the head. They gave me a loaded Chrysler 300 for a loaner. I should have it back on Monday. Tate Jeep in Glen Burnie. If I get her back on time, I'll be happy with the service. I'm actually kind of relieved because it felt like a dark cloud was always hanging over the Jeep.



I hear you..it is a black cloud and with 19500 on mine i wish it would just happen
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Old 04-20-2013, 11:40 AM   #4665
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Old 04-20-2013, 12:40 PM   #4666
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not much of a seal.
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Old 04-20-2013, 01:03 PM   #4667
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So what is the end game? Were the castings too soft and the seats sink over time? That's what it would seem. I highly doubt any of our motors will make it past the warranty period for this without a failure unless it was a JK with low miles. Even in that case if it was out by time I highly doubt Chrysler would deny replacement coverage since its showing to be a huge failure rate. I would be curious to see in a year or two what the % is.
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Old 04-21-2013, 12:17 AM   #4668
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Picture of new head! more photo with serial numbers coming.

Click the yellow bar for full size image. IE: it big

This image has been resized. Click this bar to view the full image. The original image is sized 2048x1536.
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Old 04-22-2013, 12:50 PM   #4669
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Picked her up today after the head replacement! I couldn't believe how quiet the engine runs now. I actually opened the window to enjoy it for a few seconds. I now know that I had the tick for quite a while but didn't pop the CEL until recently. Here's hoping all goes well from here on out.
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Old 04-22-2013, 08:14 PM   #4670
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Old 04-22-2013, 08:34 PM   #4671
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Is it me or dos the area around the valves look different on the new head?
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Old 04-22-2013, 08:53 PM   #4672
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Good spot on the head. To me the combustion chamber will be an oval shape on the new heads versus round on the old style. Seems pretty obvious on the intake and exhaust valve side. I would like to see what it looks like after they are run a couple thousand miles.
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Old 04-22-2013, 09:41 PM   #4673
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Is it me or dos the area around the valves look different on the new head?
I believe that is an optical illusion cause by the discoloration of the areas immediately outboard of the valves that are exposed to the cylinder. I don't believe that the combustion chamber shape has changed.
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Old 04-22-2013, 09:49 PM   #4674
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I should be able to get more photos of the head tomorrow, what angles would you like?
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Old 04-22-2013, 09:52 PM   #4675
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I believe that is an optical illusion cause by the discoloration of the areas immediately outboard of the valves that are exposed to the cylinder. I don't believe that the combustion chamber shape has changed.
ditto
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Old 04-22-2013, 10:10 PM   #4676
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Good spot on the head. To me the combustion chamber will be an oval shape on the new heads versus round on the old style. Seems pretty obvious on the intake and exhaust valve side. I would like to see what it looks like after they are run a couple thousand miles.
It will look just like the old head after it's used. The combustion chamber is oval on both heads. The old head looks round cause it has carbon build up on the flat part of the head. The new head will look just like the other after some use. Hey & look at the new head, no lifters, no cams, no rocker arms either. They reuse the old ones which makes the valve train sound the same as head before replacement.
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Old 04-22-2013, 10:16 PM   #4677
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Are many 2013 JK Pentastars showing up with this problem yet. Lot of posts to cover and I may have missed it if they are. I have a 2652 build date.
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Old 04-22-2013, 11:46 PM   #4678
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It will look just like the old head after it's used. The combustion chamber is oval on both heads. The old head looks round cause it has carbon build up on the flat part of the head. The new head will look just like the other after some use. Hey & look at the new head, no lifters, no cams, no rocker arms either. They reuse the old ones which makes the valve train sound the same as head before replacement.
If they come bare w ith valves then I'm dropping mine off for lifters
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Old 04-23-2013, 03:40 AM   #4679
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Great photos, thanks for these!

There is one thing still unclear to me - what is the heads part number? From the photos one can see the juilan build + some other numbers, but what is the actual part number, you will find in a mopar catalogue?

Cheers,
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Old 04-23-2013, 12:19 PM   #4680
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Okay, I am tired of reading about this and will be watching my 2012 JKU for the issue. I have a slight tick sound coming from the jeep now with 10.4k miles on it. Will the heads have to be replaced, most likely. Will the dealership give me a hard time, most likely. Will they try to put off fixing it, most likely. Do they have 3 shots to fix the problem before lemon law takes effect in the State of Florida, defiantly. Its easy, fix it or don't either way I will have a working vehicle in the end, its just going to be how much does Chrysler want to pay.

I am going to wait until my warning light turns on before I take it in, if they just want to mess with a sensor knowing there is a bigger issue, fine by me that is strike one, if they want to put another AA head in the vehicle, fine by me that is strike two, if they want to do something else and not fix it, strike three. Give me a 2013 jeep or newer or buy this one back and give me the cash, their call.

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