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Old 10-31-2012, 11:54 PM   #3301
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I won't, I'm expecting and prepared to not have it back for several days after they put them in.just in case.Luckily I am supplied with a work vehicle,but am considering having them pay for a rental...we shall see.

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Old 11-01-2012, 02:40 AM   #3302
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Hi all
I'm writing from Australia and just bought a Pentastar 3.6 2012 4 door in Sept 2012. To save me reading 100+ pages.. How does one tell if I may have this potential problem?
Thanks

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Old 11-01-2012, 02:45 AM   #3303
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Easiest way is to talk to the dealer. Chrysler has a list of vins that would have this problem
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Old 11-01-2012, 07:57 AM   #3304
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Originally Posted by AUSJeep
Hi all
I'm writing from Australia and just bought a Pentastar 3.6 2012 4 door in Sept 2012. To save me reading 100+ pages.. How does one tell if I may have this potential problem?
Thanks
Check the Julian date stamped on your driver side head. Its kind of hard to see. Go back about 10 pages and there are a couple photos the assist as well as the Julian date you want yours to post date.
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Old 11-01-2012, 07:15 PM   #3305
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I got the call at about 4 today that the new lifters they installed today were still making the the same ticking sound so they told me to come pick it up and bring it back on Monday and they will put me in a rental.
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Old 11-01-2012, 07:16 PM   #3306
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guess I'm getting a new head
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Old 11-01-2012, 07:21 PM   #3307
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I got the call at about 4 today that the new lifters they installed today were still making the the same ticking sound so they told me to come pick it up and bring it back on Monday and they will put me in a rental.
lol, as we said, what a complete waste of their time.
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Old 11-01-2012, 08:03 PM   #3308
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Yup you were right.but guess they need to follow up from the Bosses at Chrysler.Maybe they will recognize the problem next time now that they have had one come in.
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Old 11-01-2012, 08:09 PM   #3309
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The 3.6L in other applications is making more power then what we are getting in our jeeps are they having the same problems lol maybe we just need more power too.
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Old 11-01-2012, 08:38 PM   #3310
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The 3.6L in other applications is making more power then what we are getting in our jeeps are they having the same problems lol maybe we just need more power too.
FWIW, I had the oil in my 2011 T&C changed today and asked one of the staff how many heads they've replaced. He said NONE! They are a high volume dealer. If what he said is true maybe we're not all going to have a problem. My 2012 JKUS came from the same dealer. I hope he's right. Time will tell.
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Old 11-02-2012, 02:22 PM   #3311
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Originally Posted by rdseefeld

FWIW, I had the oil in my 2011 T&C changed today and asked one of the staff how many heads they've replaced. He said NONE! They are a high volume dealer. If what he said is true maybe we're not all going to have a problem. My 2012 JKUS came from the same dealer. I hope he's right. Time will tell.
We'll I'm sitting at a small dealership here in NH. Having my computer re-flashed as part of the cylinder hear replacement procedure and the shop manager just told me my Jeep will be the 21'st head he has replaced on wranglers alone, not including all other models with the 3.6 so I think someone is pulling your leg......
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Old 11-02-2012, 02:51 PM   #3312
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I hear ticking... not too bad... my dealer here in Monterey, CA says they've only replaced heads on other vehicles with the 3.6 no wranglers... I trust them.... NOT! However, they said my ticking was normal... They documented my complaint. I have a lifetime Chrysler warranty so I'm not trippin

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Old 11-02-2012, 02:59 PM   #3313
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I hear ticking... not too bad... my dealer here in Monterey, CA says they've only replaced heads on other vehicles with the 3.6 no wranglers... I trust them.... NOT! However, they said my ticking was normal... They documented my complaint. I have a lifetime Chrysler warranty so I'm not trippin

Build date is May 2012
How'd you get a lifetime Chrysler warranty?
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Old 11-02-2012, 03:48 PM   #3314
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How'd you get a lifetime Chrysler warranty?
Yes, please, do tell.....
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Old 11-02-2012, 03:51 PM   #3315
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How'd you get a lifetime Chrysler warranty?
when I bought my new 2013 a month ago I was offered a lifetime warranty but it was more then I was willing to spend.
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Old 11-02-2012, 04:29 PM   #3316
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I just got an appointment for the 16th to do a leakdown test due to ticking/intermitent rough running. The dealer here is so swamped with head replacements this is the soonest they can get to it. I'm willing to bet others being told they (dealerships) haven't been replacing heads are having smoke blown up their behinds.
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Old 11-02-2012, 04:40 PM   #3317
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I just got an appointment for the 16th to do a leakdown test due to ticking/intermitent rough running. The dealer here is so swamped with head replacements this is the soonest they can get to it. I'm willing to bet others being told they (dealerships) haven't been replacing heads are having smoke blown up their behinds.
From what I am hearing it sounds like my dealer wasn't being truthful about not having to replace any heads. I guess I shouldn't be surprised. He's probably trying to a preserve sales. It might help their cause but Chrysler should know that "the truth will set you free."
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Old 11-03-2012, 04:26 PM   #3318
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So I went to my Jeep Dealership... We can the ticking but it is not as bad as the posted video and I was told they wouldnt do anything until I pop a check engine light...

WTF...

My engine was build in 02/2012 and my Jeep was build in 04/2012. 10000 miles and still getting 17/18 mpg and runs like a champ.

Not sure what to do....
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Old 11-03-2012, 04:49 PM   #3319
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So I went to my Jeep Dealership... We can the ticking but it is not as bad as the posted video and I was told they wouldnt do anything until I pop a check engine light...

WTF...

My engine was build in 02/2012 and my Jeep was build in 04/2012. 10000 miles and still getting 17/18 mpg and runs like a champ.

Not sure what to do....
Drive it until it breaks and don't worry about it in the interim. If you have the problem tick caused by excessive wear in the valve guide/seat, it will probably get worse over time and there will be no question as to the need to replace it.

You could also try a different dealer or ask yours to do the compression test.
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Old 11-03-2012, 04:55 PM   #3320
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^This.
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Old 11-03-2012, 05:23 PM   #3321
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Drive it until it breaks and don't worry about it in the interim. If you have the problem tick caused by excessive wear in the valve guide/seat, it will probably get worse over time and there will be no question as to the need to replace it.

You could also try a different dealer or ask yours to do the compression test.
I am thinking about going to another Jeep Dealership...

I love my jeep but dont like not knowing if its good or bad....

Sucks
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Old 11-03-2012, 09:28 PM   #3322
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Originally Posted by jaybretzke

I am thinking about going to another Jeep Dealership...

I love my jeep but dont like not knowing if its good or bad....

Sucks
I can tell you're a worrier like me ;-). If the uncertainty is going to cause you to lose sleep, you have two additional options:

1. Purchase an extended service plan to cover you for as long as you plan to own the vehicle.

2. Trade for a 2013 with an engine build date greater than or equal to 2062 (206th day of 2012).

Given how strong the resale is on JKs, there may not be a very large difference in the cost of those options, particularly if you consider a long term, low or zero deductible service plan.
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Old 11-03-2012, 09:42 PM   #3323
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So I went to my Jeep Dealership... We can the ticking but it is not as bad as the posted video and I was told they wouldnt do anything until I pop a check engine light...

WTF...

My engine was build in 02/2012 and my Jeep was build in 04/2012. 10000 miles and still getting 17/18 mpg and runs like a champ.

Not sure what to do....
You do not need a CEL. I had my head replaced, and so did others, without a CEL. Just bad ticking.

They pull the head and check for loose lifters or anything out of spec. Once it's confirmed, you get a new head.

Open a STAR case with chrysler and get it done.
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Old 11-04-2012, 09:14 AM   #3324
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They don't even have to remove the valve covers to properly identify this problem. They do have to remove the intake manifold to test the left head.

A compression/leak down test is all that's needed to diagnose the problem. Then there's no guess work or unnecessary hoops to jump through.

Compression/leak down tests are super simple to do. Just remove the spark plugs and screw in a pressure gauge (gauges designed for this keep the peak pressure displayed until you re-set it) in its place. Cycle the engine a few times with the starter to determine the compression level, and fill the cylinder with pressurized air and measure the rate of air escaping the cylinder over a set amount of time to determine leak down.

I'm not sure why Chrysler has/is doing this the hard way by throwing re-flashes and unnecessary parts at this.
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Old 11-04-2012, 10:22 AM   #3325
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I'm not sure why Chrysler has/is doing this the hard way by throwing re-flashes and unnecessary parts at this.
I'm thinking the re-flash de-sensitizes the knock sensor and on some jeeps that aren't too bad, buys them some time.......
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Old 11-04-2012, 10:45 AM   #3326
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I'm thinking the re-flash de-sensitizes the knock sensor and on some jeeps that aren't too bad, buys them some time.......
It would be interesting if that were the case. But if that ever came out, that would be the end of Chrysler.
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Old 11-04-2012, 10:58 AM   #3327
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It would be interesting if that were the case. But if that ever came out, that would be the end of Chrysler.
I disagree, I actually think it is a smart move by chrysler in the fact that it does buy some time to see if the latest heads are going to be trouble free. It really makes no financial sense for chrysler to replace one bad set of heads with another. this way they only will need to replace the ones that are absolutely failing not the ones that are just showing signs of going bad. jeff ps my heads are dated 2312 so hoping they will be the ones lol.
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Old 11-04-2012, 11:04 AM   #3328
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I disagree, I actually think it is a smart move by chrysler in the fact that it does buy some time to see if the latest heads are going to be trouble free. It really makes no financial sense for chrysler to replace one bad set of heads with another. this way they only will need to replace the ones that are absolutely failing not the ones that are just showing signs of going bad. jeff ps my heads are dated 2312 so hoping they will be the ones lol.
If the flash was being done prior to the head change (especially on AA heads), that says to me that Chrysler knows there is an issue....but was simply buying more time.
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Old 11-04-2012, 11:18 AM   #3329
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If the flash was being done prior to the head change (especially on AA heads), that says to me that Chrysler knows there is an issue....but was simply buying more time.
you have to remember chrysler is doing what is financially good for them not me and you. I am glad they come with a 100,000 mile powertrain warranty altho I am sure in the fine print chrysler says they can change that at any time lol. hopefully not before I have problems tho if I do in fact have problems. I put a fair amount of miles on so my mileage warranty will be up before the time part of it.
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Old 11-04-2012, 11:26 AM   #3330
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I'm thinking the re-flash de-sensitizes the knock sensor and on some jeeps that aren't too bad, buys them some time.......
A plausible theory indeed. The knock sensor may pick up the tick, think its a knock and unnecessarily retard the timing.

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