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Old 06-26-2012, 08:46 PM
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3.6L Pentastar V6 cylinder 2 failures

There have been several people that have contacted us with the concern about the relatively recent discovery of the 3.6L Pentastar cylinder 2 misfire problem.

Apparently, after some research and discussions with internal engineers and ASE certified techs, it has been found that the #2 cylinder causes a misfire due to a machining irregularly in the valve guide area. The valve in the guide is loose. It is surmised that the tapered endmill used for the head in #2 cylinder valve guide internal or external was the wrong size.

As is known with robots, if the robot has a problem and it is repeatable, it will repeat the failure for the given time period. Be it 1 shift, 1 day, or one week, these problems will then end up in the field. Only early 3.6L Pentastar V6 engines seem to be affected.

Allpar reported on this as well, but didn't give the details for this issue.

http://www.allpar.com/news/index.php...tastar-problem

If your 3.6L comes up with a misfire in cylinder 2 over and over, you probably have the issue. The new cylinder heads are going to be available soon. For now, the very few people that have the issue will be taken care of as the parts come available.

So far, my 2011 Grand Caravan R/T and my wife's 2011 Avenger Lux don't see to be exhibiting the issue in cylinder #2. Both engines were made on or after 5/2011.

FYI

Regards,
Brian
BND Automotive LLC
440-821-9040
www.bndautomotive.com
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