Automotive News reports that Chrysler is replacing the cylinder heads on certain Pentastar V6 engines with "more robust" parts. The automaker hasn't detailed the problem behind the replacement, but says that there were around 1,300 vehicles across the country over the past few weeks waiting for replacement parts.

A shortage of replacement cylinder heads left many owners out of their vehicle for a week or more with Chrysler paying for rentals in the interim. The company says it is receiving as many as 500 requests per week for the new cylinder heads. In response, Chrysler supplied its service network with around 3,000 new parts to fill the orders. New Pentastar engines are being built with the revised heads.

All told, the automaker says the issue impacts around 7,500 of the 1.5 million Pentastar engines produced during the past two years. Owners have complained of ticking, stalling and other issues from Pentastar-equipped models, though Chrysler says the problem is the combination of a number of variables. According to the National Highway Traffic Safety Administration, Chrysler has yet to release a technical service bulletin on the issue, though all replacements are being done under warranty.


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  • 49 Comments
      Julio B
      • 2 Years Ago
      I love my 2012 Wrangler. It ticks a little, but it has a 100,000 mile powertrain warranty. Someday i'll get it fixed when most dealer techs are done with the rush and can handle these swaps with one hand tied to their back and have learned from their mistakes.
      over9000
      • 2 Years Ago
      Introducing the new Chrysler: same as the old Chrysler.
        Walt
        • 2 Years Ago
        @over9000
        Introducing the new trolls, same as the old trolls.
      Shiftright
      • 2 Years Ago
      Chrysler, you're letting me down...Fail
      Pat
      • 2 Years Ago
      Judging from the number of people of complain about it on the Wrangler forums that I'm on, 7500 seems pretty conservative.
      drewpy
      • 2 Years Ago
      Hate to say it...we all kinda saw it coming...really glad it was caught relatively early and, hopefully, remedied.kudos to chrysler for stepping up and taking care of business....
      • 2 Years Ago
      [blocked]
        Pat
        • 2 Years Ago
        If you want to advertise, I suggest you contact AB and set up a add insted of spamming your messages.
      JASON ANDREW
      • 2 Years Ago
      dont must of us already know to wait a couple years AFTER a new model / engine to buy one? I have always followed that rule and have NEVER had ONE issue with any car I have ever owned.
      OnTheRocks
      • 2 Years Ago
      At least they're covering the rentals.
        Chris
        • 2 Years Ago
        @OnTheRocks
        True. In the 90's Chrysler would have just said NO and hung up on you when you asked for a rental.
      • 2 Years Ago
      [blocked]
      JASON ANDREW
      • 2 Years Ago
      wow. This is a MAJOR problem. YIKES.
      chris.hemer
      • 2 Years Ago
      @max: To answer your own question: to give braking priority over throttle inputs. This was yet another way Toyota was trying to protect drivers from inadvertent acceleration. Both NASA and NHTSA concluded in independent testing that there was nothing wrong with Toyota vehicles from a mechanical standpoint.
        Walt
        • 2 Years Ago
        @chris.hemer
        Nothing wrong? Once again we have Toyotaphiles trying to re-write history. So let me refresh your memory. Toyota recalled over 10 million vehicles to deal with unintended acceleration due to unsecured floor mats and sticky accelerator pedals.
        MAX
        • 2 Years Ago
        @chris.hemer
        Actually NASA did find something. http://www.huffingtonpost.com/2012/01/21/toyota-sudden-acceleration-tin-whiskers_n_1221076.html
      whofan
      • 2 Years Ago
      If the heads aren`t robust where else did bthey cut cornner on these new engines? I love Chrysler but they need to get things right the first time. They don`t have the luxery of screwing up and being forgiven like Toyoda has.
        mcdull
        • 2 Years Ago
        @whofan
        Problem might not always because of cutting corner. The engine is a new design, it's not surprising it will have issues before a few revision. I have the 2012 JKU, knew very well the potential ticking problem before buying it. I'm glad finally Chrysler admitted the problem and as long as they honored the repair, I'm fine with that.
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