How many have Pentastar engines that are OK? - Page 3 - JeepForum.com

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post #31 of 516 Old 07-19-2012, 01:21 AM
wshearrer
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2012 JK Wrangler 
 
Join Date: May 2011
Location: wagoner
Posts: 12
just turned 16000 on mine,so far so good.

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post #32 of 516 Old 07-19-2012, 06:38 AM
bhoch
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2012 JK Wrangler 
 
Join Date: Mar 2012
Location: Lliberty Hill
Posts: 772
JK purchased beginning of May. a little over 5100 miles on it so far. No issues.
JKU purchased beginning of April. a little over 4300 miles on it so far. No issues.
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post #33 of 516 Old 07-19-2012, 07:15 AM
Jhkinin
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2012 JK Wrangler 
 
Join Date: Jun 2009
Location: Roseville
Posts: 92
Purchased Fall of last year, just over 7,000 miles and no issues. Did have the e-brake handle replaced but otherwise all good.

2012 Wrangler Rubicon Unlimited (Wifes)
2005 TJ Sport 4.0/Auto (Daughters)
1998 TJ Sahara 4.0/5 Speed (Mine)
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post #34 of 516 Old 07-19-2012, 08:13 AM
Spike6901
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1997 ZJ 
 
Join Date: Oct 2011
Location: Katy
Posts: 400
6K, no problems at all.

'97 ZJ 4L-OME HD's,Bilsteins,31's,MSD,Magnaflow cat,Flowmaster, Past: CJ-7, XJ, KJ, JKU
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post #35 of 516 Old 07-19-2012, 08:55 AM
budmanm3
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2012 JK Wrangler 
 
Join Date: Oct 2011
Location: Miami
Posts: 186
8k on mine so far.. no issues.

2012 Sahara Unlimited
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post #36 of 516 Old 07-19-2012, 11:17 AM
ScottHerman
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2010 JK Wrangler 
 
Join Date: Jan 2011
Location: Cookeville
Posts: 82
Just out of curiosity, exactly what part is failing? I gather it's in the head, but is it the valve, the cam, or the seat?
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post #37 of 516 Old 07-19-2012, 12:55 PM
Godholio
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2012 JK Wrangler 
 
Join Date: Jan 2007
Location: Reno
Posts: 2,041
The most recent posts I've seen are saying it's a casting problem in one of the valve seats.

I just hit 13k miles yesterday (purchased March 4th), no problems.
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post #38 of 516 Old 07-19-2012, 01:27 PM
ScottHerman
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2010 JK Wrangler 
 
Join Date: Jan 2011
Location: Cookeville
Posts: 82
For people who have owned jeeps before, this probably won't turn them against the brand. It is a shame about the first-time owners that will be soured by this experience and will never get to find out how great an experience Jeep can be.
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post #39 of 516 Old 07-19-2012, 05:22 PM
floridajpr
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2015 JK Wrangler 
 
Join Date: Apr 2007
Location: Jax
Posts: 275
Quote:
Originally Posted by ScottHerman View Post
For people who have owned jeeps before, this probably won't turn them against the brand. It is a shame about the first-time owners that will be soured by this experience and will never get to find out how great an experience Jeep can be.
I dont know? I traded my 2006 LJ for a 2012 JKUS because I had the dreaded OPDA problem with the 4.0L I6 and it cost me plenty to fix (Well I think it was fixed), (Replaced two computers, O2 sensors a few times, Cat Converter, OPDA modified, Cam and valves, finally rebuilt the whole motor with a 505 Performance 4.7L Stroker kit and it failed the first time at 600 miles, rebuilt a second time (Under Warranty) and traded it before it had 300 miles for a 2012 JKUS now I am hearing a tick in my 2012 that was built in April 2012.

What a disappiontment in Jeep and I have had Jeeps before!
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post #40 of 516 Old 07-19-2012, 06:05 PM
Spank
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2014 JK Wrangler 
 
Join Date: Jul 2007
Location: Colorado
Posts: 1,282
I bought mine back in October, just hit 20k miles, no problems.

'14 Wrangler Unlimited Rubicon
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post #41 of 516 Old 07-20-2012, 06:23 AM
Orange1
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2012 JK Wrangler 
 
Join Date: Mar 2012
Location: Stuart
Posts: 127
Zero Problems
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post #42 of 516 Old 07-20-2012, 10:21 AM
TheHuntsman
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2012 JK Wrangler 
 
Join Date: Apr 2012
Location: Frankfort
Posts: 294
Bought mine in April. 4k miles on it. Just did my first oil change at 3500. Still waaaaayy to early to tell, imo.
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post #43 of 516 Old 07-20-2012, 10:29 AM
Vettster
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2006 TJ Wrangler 
 
Join Date: Feb 2010
Location: Veracruz, Ver. Mexico
Posts: 50
JKU bought in September, 2011, so I can assume it was an "early build".

No problems in 6,000 miles of short trip, daily driver type use. Fill tank, drive, change oil & repeat.

Of course, I'm still waiting for the OPDA to go out on my '06 Rubi also. Keeping my fingers crossed.
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post #44 of 516 Old 07-20-2012, 11:21 AM
victory red
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2012 JK Wrangler 
 
Join Date: Aug 2005
Location: PA
Posts: 847
7.5k on mine. one synthetic oil change. so far, so good.

2012 ARCTIC
IN SERVICE 12/17/11
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post #45 of 516 Old 07-20-2012, 12:00 PM
Don-T
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2012 JK Wrangler 
 
Join Date: Jun 2003
Location: Pearland, TX
Posts: 181
Bought mine in January. 14k miles, no issues.

12 Rubicon
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