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Old 02-20-2013, 06:14 PM   #4231
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I do too, but that's just my humble opinion.

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Old 02-20-2013, 06:24 PM   #4232
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Old 02-20-2013, 07:33 PM   #4233
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Originally Posted by Milspec1 View Post
Ok, so after spending the last hour reading this entire thread, I pose this question:
I'm in the market for a pre-owned JKU and want to spend about 27K, given the info available on AA and AB heads, should I--
A) find a brand new 13 with nothing on it (no frills), they're going around 28K here.
B) find a pre-owned 12 over 20,000 miles with an AC head or build date in late 12.
C) get a pre-owned JK with the 3.8
D) find a pre-owned 12 that either has higher miles with NO tick, or try to verify if e head has already been replaced.

I was looking forward to the Pentastar, but obviously don't want to make a poor decision.

Thoughts?
I think the 10 and the last year for the 3.8 has been the best thus far from everything I've read. Also what we own and have been very satisfied with it so far. It is pretty much loaded and a rare edition at that. Also has a 3.73 ratio, which is what I would recommend when looking for a good used one to buy.
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Old 02-21-2013, 12:09 AM   #4234
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Originally Posted by Milspec1 View Post
Ok, so after spending the last hour reading this entire thread, I pose this question:
I'm in the market for a pre-owned JKU and want to spend about 27K, given the info available on AA and AB heads, should I--
A) find a brand new 13 with nothing on it (no frills), they're going around 28K here.
B) find a pre-owned 12 over 20,000 miles with an AC head or build date in late 12.
C) get a pre-owned JK with the 3.8
D) find a pre-owned 12 that either has higher miles with NO tick, or try to verify if e head has already been replaced.

I was looking forward to the Pentastar, but obviously don't want to make a poor decision.

Thoughts?
Just my humble opinion -- but having owned and driven both the 3.8 and 3.6, I personally would lean toward any 12+ with a known AC head.

My personal opinion is that the Pentastar, despite the head issue, is an excellent engine. I'm not sure I could go back to driving a 3.8 again, quite honestly -- the extra torque and horsepower are just SO worth it and make the JK move like I think that it should.

Also, if you're looking for an auto transmission, the 5-speed auto is far superior to the 4-speed fragmentation grenade bolted up to the 3.8s.

I know that Chrysler will eventually take care of my ticking Pentastar (hopefully next week). Since I'm not a Chrysler insider, I'm on the outside looking in and have no secret knowledge concerning policies/procedures nor the extent of the problem -- ergo, I find the process of taking care of the issue (i.e. my particular motor) frustrating. Not nearly frustrating enough, however, to go back to a 3.8 with a 4-speed auto.

Now if Chrysler were to offer to replace my Pentastar with a Hemi, well...
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Old 02-21-2013, 05:34 AM   #4235
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Originally Posted by Gort

Just my humble opinion -- but having owned and driven both the 3.8 and 3.6, I personally would lean toward any 12+ with a known AC head.

My personal opinion is that the Pentastar, despite the head issue, is an excellent engine. I'm not sure I could go back to driving a 3.8 again, quite honestly -- the extra torque and horsepower are just SO worth it and make the JK move like I think that it should.

Also, if you're looking for an auto transmission, the 5-speed auto is far superior to the 4-speed fragmentation grenade bolted up to the 3.8s.

I know that Chrysler will eventually take care of my ticking Pentastar (hopefully next week). Since I'm not a Chrysler insider, I'm on the outside looking in and have no secret knowledge concerning policies/procedures nor the extent of the problem -- ergo, I find the process of taking care of the issue (i.e. my particular motor) frustrating. Not nearly frustrating enough, however, to go back to a 3.8 with a 4-speed auto.

Now if Chrysler were to offer to replace my Pentastar with a Hemi, well...
Well said. I think with all the valuable knowledge in this thread, I can be an educated consumer and find a new/newer vehicle with the better heads.

I do find it interesting that many dealers around here include a picture of the door VIN sticker that shows the build date. It makes it easier to identify the stagnant 2013's that were built around August 2012.
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Old 02-21-2013, 01:29 PM   #4236
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I wouldnt be worried about any Pentastar. The thing has a 5 year 100k powertrain warranty. If it has a problem, it will within that time and Jeep will have to do something about it. I just haven't taken mine to a dealer that wants to fix it yet.
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Old 02-21-2013, 02:30 PM   #4237
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I wouldnt be worried about any Pentastar. The thing has a 5 year 100k powertrain warranty. If it has a problem, it will within that time and Jeep will have to do something about it. I just haven't taken mine to a dealer that wants to fix it yet.
--
Not only that but it is used across Fiat/Chrysler's fleet.

We now have two Dodge Ram work vans (Caravan) for techs with the Pentastar in them. Oil changes will occur in the 7,500 mile range and most likely later and these vans will be worked carrying equipment, lots of idle time and stop & go.

They better perform or we won't buy anymore. We have already switched from the buying Ford Transit Van for having too many issues.
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Old 02-21-2013, 03:30 PM   #4238
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Jeep is back from the dealer with a new head. RL 141353 - AC in cylinder #2. Dropped it off Tues morning, was ready by 11am Thursday. Drove it back to work, and man is this engine quiet and smooth once again. I didn't even think my engine was really ticking (not like videos posted here). But I can absolutely tell a difference now that the head is replaced. Not so much performance wise, but certainly with noise and smoothness.

Granted, I may just have a good dealer, but given the speed at which they diagnosed the problem, had heads in stock, offered me a nice loaner car, and all in all gave me zero hassle, I have to think that Chrysler has clearly told the dealers to just fix the thing and move on, no hassles.
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Old 02-21-2013, 03:35 PM   #4239
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Originally Posted by Gort View Post
Just my humble opinion -- but having owned and driven both the 3.8 and 3.6, I personally would lean toward any 12+ with a known AC head.

My personal opinion is that the Pentastar, despite the head issue, is an excellent engine. I'm not sure I could go back to driving a 3.8 again, quite honestly -- the extra torque and horsepower are just SO worth it and make the JK move like I think that it should.

Also, if you're looking for an auto transmission, the 5-speed auto is far superior to the 4-speed fragmentation grenade bolted up to the 3.8s.

I know that Chrysler will eventually take care of my ticking Pentastar (hopefully next week). Since I'm not a Chrysler insider, I'm on the outside looking in and have no secret knowledge concerning policies/procedures nor the extent of the problem -- ergo, I find the process of taking care of the issue (i.e. my particular motor) frustrating. Not nearly frustrating enough, however, to go back to a 3.8 with a 4-speed auto.

Now if Chrysler were to offer to replace my Pentastar with a Hemi, well...

Mine had no real tick, but threw a CEL and just had it's head replaced at 23k miles. Buy a Pentastar, it blows away the non-Pentastars (I've driven three of them) but make sure it has the AC head to be on the safe side. Ticking, mpg, performance issues aren't the only indicators there is a problem. Mine had none.
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Old 02-21-2013, 04:31 PM   #4240
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Has anyone had trouble after your cylinder head has been replaced. The replaced mine and soon after it takes a while to turn on now. It has extended cranking and sometimes when I try turning it on it turns pff
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Old 02-21-2013, 04:32 PM   #4241
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it's nice to know that they're still putting AC heads on and that there isn't an AD revision for the driver's side. I have 7k+ miles and no problems with the AC replacement.
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Old 02-21-2013, 05:44 PM   #4242
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few thousand miles after replacement and no issues thus far
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Old 02-22-2013, 04:40 PM   #4243
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Old 02-22-2013, 04:47 PM   #4244
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Originally Posted by Rb1boxer_3
Has anyone had trouble after your cylinder head has been replaced. The replaced mine and soon after it takes a while to turn on now. It has extended cranking and sometimes when I try turning it on it turns pff
Almost sounds like a timing issue to me
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Old 02-22-2013, 10:38 PM   #4245
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Originally Posted by 12CrushRubi

Almost sounds like a timing issue to me
That's what my father inlaw said he's a mechanic but hasn't been around to hear it. They put some programmer on it now so it can record all the data and figure out what's making it have problems. It's lk a garage door opener for me to press when my jeep does the extended cranking.
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Old 02-22-2013, 11:19 PM   #4246
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Originally Posted by Rb1boxer_3

That's what my father inlaw said he's a mechanic but hasn't been around to hear it. They put some programmer on it now so it can record all the data and figure out what's making it have problems. It's lk a garage door opener for me to press when my jeep does the extended cranking.
That sucks man.. At least it'll be covered either way. Good luck with it
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Old 02-22-2013, 11:45 PM   #4247
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That's what my father inlaw said he's a mechanic but hasn't been around to hear it. They put some programmer on it now so it can record all the data and figure out what's making it have problems. It's lk a garage door opener for me to press when my jeep does the extended cranking.
When you say "they", you mean someone at the dealer?
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Old 02-23-2013, 12:12 AM   #4248
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mine just threw the CEL, ugh. Took it in, only to pick it back up a few hours later when they realized the parts aren't there. Would have wished they told me that first! Oh well, at least its covered!
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Old 02-24-2013, 12:44 AM   #4249
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mine just threw the CEL, ugh. Took it in, only to pick it back up a few hours later when they realized the parts aren't there. Would have wished they told me that first! Oh well, at least its covered!
How many miles?
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Old 02-24-2013, 06:36 AM   #4250
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I have read through a lot of this thread but I have to admit I haven't read all 4,200 posts. So I would like to make sure I have the manufacture dates correct regarding the fix for this problem. I just have a few questions and would appreciate your help.

1. Any Jeep Wrangler made after August 2012 should have the AC head and be ok?

2. All 2013 Jeep Wranglers should be ok?

3. So far, there have been no known issues reported here regarding the AC head or 2013's?

Thanks for your help.
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Old 02-24-2013, 08:46 AM   #4251
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I have read through a lot of this thread but I have to admit I haven't read all 4,200 posts. So I would like to make sure I have the manufacture dates correct regarding the fix for this problem. I just have a few questions and would appreciate your help.

1. Any Jeep Wrangler made after August 2012 should have the AC head and be ok?

2. All 2013 Jeep Wranglers should be ok?

3. So far, there have been no known issues reported here regarding the AC head or 2013's?

Thanks for your help.
1. Maybe.

2. There are a few of the very early 2013's I've read about having the problem. I don't want to link to the site and violate any rules, but they are out there.

3. See 2.

As a side note I was in a rental 2013 Dodge Caravan with the Pentastar engine this past week and it ran perfectly. I didn't care for the transmission, but that's another story.
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Old 02-24-2013, 10:33 AM   #4252
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Originally Posted by SilverSport

When you say "they", you mean someone at the dealer?
Quote:
Originally Posted by Landman
I have read through a lot of this thread but I have to admit I haven't read all 4,200 posts. So I would like to make sure I have the manufacture dates correct regarding the fix for this problem. I just have a few questions and would appreciate your help.

1. Any Jeep Wrangler made after August 2012 should have the AC head and be ok?

2. All 2013 Jeep Wranglers should be ok?

3. So far, there have been no known issues reported here regarding the AC head or 2013's?

Thanks for your help.
Sliver sport- yea the service manager has been working on it now after the shop hands just kept replacing the key module and not really looking into it. Now he says I need a new computer and another key module (number 3 now). So yea.

1. No there's up to January 12 where there's still messed up heads.

2. I've heard there's still problems.

3. Yes
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Old 02-24-2013, 10:42 AM   #4253
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Sliver sport- yea the service manager has been working on it now after the shop hands just kept replacing the key module and not really looking into it. Now he says I need a new computer and another key module (number 3 now). So yea.

1. No there's up to January 12 where there's still messed up heads.

2. I've heard there's still problems.

3. Yes

Makes me wonder if the cam phaser is screwed up which in turn is effecting the valve timing, making for hard starting.
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Old 02-24-2013, 10:47 AM   #4254
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Quote:
Originally Posted by Landman View Post
I have read through a lot of this thread but I have to admit I haven't read all 4,200 posts. So I would like to make sure I have the manufacture dates correct regarding the fix for this problem. I just have a few questions and would appreciate your help.

1. Any Jeep Wrangler made after August 2012 should have the AC head and be ok?

2. All 2013 Jeep Wranglers should be ok?

3. So far, there have been no known issues reported here regarding the AC head or 2013's?

Thanks for your help.
#1 - Correct in that they have the AC head.....and we are hoping they will be OK.
#2 - No, early 2013's had the AB head...that is why #1 is a post August date.
#3 - Correct.....keep your fingers crossed. (back to #1 again)
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Old 02-24-2013, 01:03 PM   #4255
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Replaced head

Got my 12 JK back Friday after a head change. First Chrysler made them change the lifters but that didn't fix it so they changed the head. I didn't know how loud it was until I heard how quiet it is now. Now they say the water pump is making a noise and they are going to change that but it is on back order. That's now:
  • oil cooler
  • heater core-after 3 visits
  • lifters/head
  • water pump to be done
What's next? How bout lemon?
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Old 02-24-2013, 07:31 PM   #4256
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Originally Posted by SilverSport

Makes me wonder if the cam phaser is screwed up which in turn is effecting the valve timing, making for hard starting.
Ill find out when they replace the computer and it still does it again after all the " oh it's fixed now". I had Chrysler open up a star case they said they'll give me a call after its fixed again.
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Old 02-25-2013, 02:09 AM   #4257
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Thanks for the information guys. I guess my 2013 made in November 2012 should have the AC head. Could someone point out where that plaque is on the vehicle that shows the head version?
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Old 02-25-2013, 03:48 AM   #4258
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My 2012 threw a CEL for Cylinder 2 misfire at 29.5K miles. Dropped it off at the dealer and they called me and told me they had some heads in stock and would get authorization to use them from Chrysler on Monday, and should have my Jeep with new head on Tuesday. No bull from them, sounds like they know the drill now.

Love my Pentastar though!
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Old 02-25-2013, 08:47 AM   #4259
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Damn!
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Old 02-25-2013, 04:47 PM   #4260
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Originally Posted by LBrito
My 2012 threw a CEL for Cylinder 2 misfire at 29.5K miles. Dropped it off at the dealer and they called me and told me they had some heads in stock and would get authorization to use them from Chrysler on Monday, and should have my Jeep with new head on Tuesday. No bull from them, sounds like they know the drill now.

Love my Pentastar though!
Wow almost 30k. It's good that they didn't take forever lk mine your almost out of warranty

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