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Old 03-20-2013, 05:52 PM   #4441
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yea who could imagine metal parts with springs and bearings spinning around and banging on each other at 700-6500 rpms would make any noise lol. Lifters themselves are pretty crude devices.
Yeah, in the 70's maybe. My 10 year old civic is quieter than my jeep.

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Old 03-20-2013, 07:46 PM   #4442
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With all the hype about how modern, advanced, and spectacularly engineered the Pentastar was, it sure fell flat on its face. Mine ticks but it's not crazy, and it doesn't seem to have any other symptoms. Mine is an early 2012 so I'm sure the head is defective.

My previous vehicle was an '06 Infiniti G35X sedan, and that VQ35DE DOHC V6 engine still purred like a baby kitten the day I sold her @ 50k miles. In the Chrysler world, all kinds of noise is considered "acceptable." I wonder why American cars get a bad rep...
Maybe the next time Chrysler goes bankrupt Honda will buy them, they could use a capable 4X.

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Old 03-21-2013, 12:27 AM   #4443
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With all the hype about how modern, advanced, and spectacularly engineered the Pentastar was, it sure fell flat on its face. Mine ticks but it's not crazy, and it doesn't seem to have any other symptoms. Mine is an early 2012 so I'm sure the head is defective.

My previous vehicle was an '06 Infiniti G35X sedan, and that VQ35DE DOHC V6 engine still purred like a baby kitten the day I sold her @ 50k miles. In the Chrysler world, all kinds of noise is considered "acceptable." I wonder why American cars get a bad rep...
Have to disagree here! Overall the engine is great. There is a problem it's been identified and as needed they are repairing. Can't condemn the entire pentastar fleet! Many foreign cars have issues also. My friend has an Audi A5 coupe and the engine ticks! They replaced his engine! He said the dealer advised he was not the first!

Back before Datsun became Nissan, I had a 310. Cracked block! They replaced the engine! Had a 1994 pathfinder. No problem, no tick. Received a call one day out of the blue from the dealer and was told "your engine is in" ! I called to advise there must be a mistake. They said no, when you were in for an oil change we identified a problem etc....

And it continues! Had a two month old 2000 Toyota Celica GTS, took her in for the first oil change and received a call, they were keeping her as they found a crack in the block! So yes a new engine!

Point being this happens more then you think! I also must have luck! Lol
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Old 03-21-2013, 06:07 AM   #4444
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You'll know when you get the real Pentatick®. It's unbearable. Your jeep will sound like an old beater with no oil.
This^^. We are not talking about injector ticking here. Also.......... what ever dealer tells you a lifter that ticks is normal is a a-hole. Why don't ALL the lifters tick if that is the case??? A lifter that bleeds down and ticks is a BROKEN lifter and a sticky burnt valve that ticks is louder than a lifter and has a distinct metal to metal ring to the sound.
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Old 03-21-2013, 09:15 AM   #4445
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Originally Posted by sobeperry View Post
Have to disagree here! Overall the engine is great. There is a problem it's been identified and as needed they are repairing. Can't condemn the entire pentastar fleet! Many foreign cars have issues also. My friend has an Audi A5 coupe and the engine ticks! They replaced his engine! He said the dealer advised he was not the first!

Back before Datsun became Nissan, I had a 310. Cracked block! They replaced the engine! Had a 1994 pathfinder. No problem, no tick. Received a call one day out of the blue from the dealer and was told "your engine is in" ! I called to advise there must be a mistake. They said no, when you were in for an oil change we identified a problem etc....

And it continues! Had a two month old 2000 Toyota Celica GTS, took her in for the first oil change and received a call, they were keeping her as they found a crack in the block! So yes a new engine!

Point being this happens more then you think! I also must have luck! Lol
No way!
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Old 03-21-2013, 12:15 PM   #4446
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Originally Posted by sobeperry View Post
Have to disagree here! Overall the engine is great. There is a problem it's been identified and as needed they are repairing. Can't condemn the entire pentastar fleet! Many foreign cars have issues also. My friend has an Audi A5 coupe and the engine ticks! They replaced his engine! He said the dealer advised he was not the first!

Back before Datsun became Nissan, I had a 310. Cracked block! They replaced the engine! Had a 1994 pathfinder. No problem, no tick. Received a call one day out of the blue from the dealer and was told "your engine is in" ! I called to advise there must be a mistake. They said no, when you were in for an oil change we identified a problem etc....

And it continues! Had a two month old 2000 Toyota Celica GTS, took her in for the first oil change and received a call, they were keeping her as they found a crack in the block! So yes a new engine!

Point being this happens more then you think! I also must have luck! Lol
This design characteristic of the engine is something that a few people on engine blogs are stating is a design flaw.

"The Pentastar engine has an unusual design. The engine's exhaust passages merge into a single outlet in the aluminum cylinder heads before exiting to the exhaust manifold. Most modern engine designs send hot exhaust gases in separate passages in the head to the exhaust manifold."

"Bob Lee, Chrysler's chief of engineering, said, however, that excessive heat was not a factor in the malfunction and that his engineering teams spent months isolating its causes."

Dealers repairing Chrysler V6 engines - Autoweek
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Old 03-21-2013, 01:18 PM   #4447
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"Bob Lee, Chrysler's chief of engineering, said, however, that excessive heat was not a factor in the malfunction and that his engineering teams spent months isolating its causes."

Dealers repairing Chrysler V6 engines - Autoweek
Mr. Lee said lots of things, most of which were ridiculous. LOL Funny how the newer head design was made to cool better, along with better valve guides, and some other tweaks.
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Old 03-21-2013, 02:39 PM   #4448
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that statement by Lee is over 6 months old.
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Old 03-21-2013, 03:01 PM   #4449
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^^ Yep!^^ It made no sense then, or now.
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Old 03-21-2013, 04:24 PM   #4450
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Question for you all. I had my 2012 JK head replaced due to ticking at 1300 miles. I now have 16000 miles and I am getting a bit of white smoke upon cold start up. Any ideas, and can I eventually correlate this as a problem relating to the replaced head (i.e. is this likely a gasket issue incurred from them replacing the head last year?)?
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Old 03-21-2013, 04:53 PM   #4451
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Question for you all. I had my 2012 JK head replaced due to ticking at 1300 miles. I now have 16000 miles and I am getting a bit of white smoke upon cold start up. Any ideas, and can I eventually correlate this as a problem relating to the replaced head (i.e. is this likely a gasket issue incurred from them replacing the head last year?)?
Depends... White smoke/steam right when the vehicle is started up? Sounds like a gasket leak is letting coolant in but who knows if its directly related to their work. But, instead of happening right on startup, if white smoke/steam occurs several minutes later it is probably just condensation building up in the engine while it sits off.
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Old 03-21-2013, 05:11 PM   #4452
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^^White smoke could just be condensation, is normal, and is not uncommon during the winter months. OTOH it could also be from a bad head gasket. Check the coolant level, and if you're really concerned pressure test the cooling system, that will tell you if the head gasket is bad or not.
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Old 03-21-2013, 07:49 PM   #4453
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^^White smoke could just be condensation, is normal, and is not uncommon during the winter months. OTOH it could also be from a bad head gasket. Check the coolant level, and if you're really concerned pressure test the cooling system, that will tell you if the head gasket is bad or not.
Agreed. I suspect condensation from cooler weather, plus one of the byproducts from the cat is water.
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Old 03-21-2013, 08:08 PM   #4454
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Agreed. I suspect condensation from cooler weather, plus one of the byproducts from the cat is water.
Yes. If there is any doubt, 5 minutes with a pressure tester will easily rule out a bad head gasket. Just do it on a cold engine.
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Old 03-22-2013, 05:52 PM   #4455
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Hwy1rubi had a good suggestion. Talk to the owner or dealership manager. I had a 2011 JK that had the water leak problem on the right passenger side. The dealership tried 5 or 6 times to fix it but never could. I went to the dealership manager and explained everything that had happened and he ended up giving me almost what I paid for the vehicle in trade in value towards a 2012. He also let me have the 2012 at below invoice cost. My vehicle was almost a year old but only had about 5,000 miles on it since it was not my daily driver. I was happy with that resolution rather than going through a lemon law case. It is my understanding that if the vehicle is purchased back through the lemon law the amount paid is adjusted to a certain degree for the mileage on the vehicle anyway.

What I really don't understand about your case is it should be covered by warranty and there should not be a "last attempt at repair". They should keep trying until it is fixed or replace the vehicle. Maybe they meant a last attempt before they replaced the vehicle. Just a thought.
So as long as it's under warranty, it's ok that I've been back at the dealership for the same repairs about every 3 months? That doesn't seem fair to me.
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Old 03-22-2013, 06:11 PM   #4456
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So as long as it's under warranty, it's ok that I've been back at the dealership for the same repairs about every 3 months? That doesn't seem fair to me.
What did your attorney suggest?
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Old 03-22-2013, 06:37 PM   #4457
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Either today or Monday, a 30-day demand letter will be sent out .. Refund or replacement. I guess Lemon Law does apply here, because they have had the vehicle more than 15 days for repairs.
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Old 03-22-2013, 07:21 PM   #4458
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Either today or Monday, a 30-day demand letter will be sent out .. Refund or replacement. I guess Lemon Law does apply here, because they have had the vehicle more than 15 days for repairs.
Good for you, hope it all works out.
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Old 03-22-2013, 08:44 PM   #4459
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Either today or Monday, a 30-day demand letter will be sent out .. Refund or replacement. I guess Lemon Law does apply here, because they have had the vehicle more than 15 days for repairs.
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Old 03-23-2013, 12:10 AM   #4460
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Just picked up a 13 JKU and had I been aware of this issue I would not have bought it. We currently have a 2004 Rubicon that we will never part with. It has never had a problem in 9 years. I traded in the DD a 2009 hyundai w/112 k miles never a warranty or repair issue. Our new 2013 Wrangler JKU has a build date of 9/12 AB heads and a julian # of 2652a. I only hope we don't have an issue as we put on a 2.5" lift 35" tires w / wheel package, bumper, warn winch ect. After all these years of Jeeps design, build and off road engineering I can't believe they could take a step backwards and produce an engine that can't run 10k miles without having a major issue like this is. These engines with todays technology should run 200k + trouble free when properly maintained. In reading 40+ pages on this topic they did radical head design incorporating exhaust manifolds into the head and cats near the engine compartment. Heat is a killer on engines and with that being done with foam sound deadening on the intake plenum and valve covers and the plastic engine cover it only makes the heat being retained under the hood worse. Love our Jeep but not a happy camper on this news. Has anyone removed the insulation on the engine and tried to see if that would lower some of the engine operating and compartment temps. I could care less if there is more noise because of the insulation removal.
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Old 03-23-2013, 12:24 AM   #4461
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Are most of the problems occurring at 10,000 miles and higher?
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Old 03-23-2013, 12:51 AM   #4462
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#4 on my 2012 JK replaced last month also. Had the ticking, and check engine light.
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Old 03-23-2013, 12:56 AM   #4463
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Are most of the problems occurring at 10,000 miles and higher?
no. ticking at 1k miles is common. cylinder heads have been replaced at 30k miles with no ticking symptoms.
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Old 03-23-2013, 01:10 AM   #4464
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Just picked up a 13 JKU and had I been aware of this issue I would not have bought it. We currently have a 2004 Rubicon that we will never part with. It has never had a problem in 9 years. I traded in the DD a 2009 hyundai w/112 k miles never a warranty or repair issue. Our new 2013 Wrangler JKU has a build date of 9/12 AB heads and a julian # of 2652a. I only hope we don't have an issue as we put on a 2.5" lift 35" tires w / wheel package, bumper, warn winch ect. After all these years of Jeeps design, build and off road engineering I can't believe they could take a step backwards and produce an engine that can't run 10k miles without having a major issue like this is. These engines with todays technology should run 200k + trouble free when properly maintained. In reading 40+ pages on this topic they did radical head design incorporating exhaust manifolds into the head and cats near the engine compartment. Heat is a killer on engines and with that being done with foam sound deadening on the intake plenum and valve covers and the plastic engine cover it only makes the heat being retained under the hood worse. Love our Jeep but not a happy camper on this news. Has anyone removed the insulation on the engine and tried to see if that would lower some of the engine operating and compartment temps. I could care less if there is more noise because of the insulation removal.

After 1 new head at under 10K, I have thought of adding hood louvers like these; Google Image Result for http://www.jeeperz4wd.com/images/P/TJ-50HLPD.jpg to help draw the heat out of the engine compartment, especially when wheeling.

With all I have read, I think the pentastar heads are a piss poor design, but sadly typical of current Chrysler quality. I too would have thought long and hard before buying a jeep with this engine.
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Old 03-23-2013, 01:28 AM   #4465
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Back before Datsun became Nissan, I had a 310. Cracked block! They replaced the engine! Had a 1994 pathfinder. No problem, no tick. Received a call one day out of the blue from the dealer and was told "your engine is in" ! I called to advise there must be a mistake. They said no, when you were in for an oil change we identified a problem etc....

And it continues! Had a two month old 2000 Toyota Celica GTS, took her in for the first oil change and received a call, they were keeping her as they found a crack in the block! So yes a new engine!
I rarely go to the dealers to do their overpriced oil change, but seems I might have missed many opportunities that I could have got a new engine
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Old 03-23-2013, 01:38 AM   #4466
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This is a small sample of the total pentastar owners driving JK's but disturbing none the less when you invest 40k or more in a rig. I am wondering if getting more heat out of the engine compartment maybe run synthetic 5w / 30w oil and mid grade fuel may help lower temps and reduce failure of the heads. The higher temps and thinner oil is used mainly for emission and CAFE standards being met for the Fed's. Even a engine having issues under a 100k miles is just wrong. Chrysler surely knew this during development and testing of this powerplant before it was produced and put into production vehicles.
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Old 03-23-2013, 05:02 AM   #4467
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no. ticking at 1k miles is common. cylinder heads have been replaced at 30k miles with no ticking symptoms.
Well, that's not good. I've had a small ticking since i got it. It has about 3400 miles on it. But have not had a engine light yet. They want to the engine light on before they look at it don't they or at least that's what I heard. Damn shame, always wanted a jeep since high school and finally get one and now have to worry about this . I know it's under warranty but damn!!
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Old 03-23-2013, 06:12 AM   #4468
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This is a small sample of the total pentastar owners driving JK's but disturbing none the less when you invest 40k or more in a rig. I am wondering if getting more heat out of the engine compartment maybe run synthetic 5w / 30w oil and mid grade fuel may help lower temps and reduce failure of the heads. The higher temps and thinner oil is used mainly for emission and CAFE standards being met for the Fed's. Even a engine having issues under a 100k miles is just wrong. Chrysler surely knew this during development and testing of this powerplant before it was produced and put into production vehicles.
It is extremely disturbing to me as well. I agree with what you've said about CAFE, but the 2012's call for 5W30 oil, and the 2013's are now calling for 5W20. I doubt the tick has anything to do with fuel or the oil grade. However I'd feel more comfortable now that I know the engine's history, using a 30 grade oil.

I think the tick has to do with heat and a head that had an initial poor design when it came to cooling it. Hopefully that's behind us with the AC head revision. JMO
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Old 03-23-2013, 08:49 AM   #4469
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A lot of the newer vehicles that have the integrated manifold are having issues in one way or another when the motor is released, ie first gen of them. Im not saying its right, but its where we are going with vehicles with this design. Its not just Jeep, its we have them and its happening to us.
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Old 03-23-2013, 09:06 AM   #4470
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^^ There is almost always some kind of growing pains with a change over to a new design or technology. Hopefully the AC head solved the problem, and if they switch over to Direct Injection, that doesn't start a new set of problems.

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