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Old 08-13-2012, 02:36 PM
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Pentastar head problem reported on autoweek.

I thought this might be an interesting read. Looks like Chrysler is aware of this problem... but I think they have been slow to react.

http://www.autoweek.com/article/2012...n=awdailydrive
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Old 08-13-2012, 03:00 PM
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Re: Pentastar head problem reported on autoweek.

It affects only 0.5% of Pentastar engines. Probably QA issues.
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Old 08-13-2012, 03:13 PM
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Re: Pentastar head problem reported on autoweek.

Seems to be a #2 cyl (driver's side front) problem. Check engine light will come on for a misfire when damage is done.

Not much info but seems to be mainly on Wranglers which have a quite different intake manifold design. Reports indicate burned valves which could result from an overly lean mixture or detonation which is odd to appear only on a forward end cyl unless the timing or injection has an issue for that cyl.

Any reports on a WK2 ?
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Old 08-13-2012, 03:59 PM
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Re: Pentastar head problem reported on autoweek.

theres been a few

http://jeepgarage.org/showthread.php?t=32195
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Old 08-13-2012, 04:21 PM
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Re: Pentastar head problem reported on autoweek.

Wrangler forum is indicating '12s with issue were built in Trenton.

ps .5% of 1.2 mil is 6,000.
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Old 08-13-2012, 05:16 PM
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Re: Pentastar head problem reported on autoweek.

Maybe I am glad mine was built in Mexico? Never thought I would say that but as mentioned, it is a small number of engines and time will tell how many truly are effected.
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Old 08-13-2012, 05:43 PM
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Re: Pentastar head problem reported on autoweek.

How do you figure out where the engine was built? Does it say on the window sticker?
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Old 08-13-2012, 06:16 PM
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Re: Pentastar head problem reported on autoweek.

Not sure what to make of this, but speaking as a victim of the Chrysler 2.7L V6 ($1500+) water pump, I'm really glad I opted for the unlimited extended warranty. You folks might want to look into it before the price jumps due to this issue.
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Old 08-13-2012, 08:30 PM
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Re: Pentastar head problem reported on autoweek.

I would look into an extended warranty, but I'm sure I'll be driving something else before this hits the 100k mark.

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Old 08-13-2012, 08:54 PM
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Re: Pentastar head problem reported on autoweek.

Quote:
Originally Posted by ajs800 View Post
I would look into an extended warranty, but I'm sure I'll be driving something else before this hits the 100k mark.

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Well good for you. My comment was meant for those of us that will be driving ours well past the 100k mark.
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Old 08-13-2012, 09:00 PM
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Re: Pentastar head problem reported on autoweek.

On the "content" sheet.
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Old 08-13-2012, 09:56 PM
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Re: Pentastar head problem reported on autoweek.

Yes it does say on the window sticker where the engine was built. I don't it matters though this problem has been with engines out of both plants. From what the article says they did make a design change but not everyone will have the problem. It sounds like it takes certain circumstances to create the issue. It seems one is cheap gas.
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