How many have Pentastar engines that are OK?
I have an 08 and I'm thinking of getting a 2012.
JK 08 X
I've got a 2012 and no problems so far. I can really feel the power. I have driven an 08 that was a friends and then I drove mine and you can really tell a difference. You should ask a dealer to let you test drive a 2012. You will love it!
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The vast majority are fine. You hear about a few here and think they're all bad but even those here are a small portion of jeeps sold, let alone all the Chrysler vehicles that use this engine, otherwise there would be a recall.
08 Unlimited Rubicon 6 speed, 315/70-16 Kelly TSR, 1.5" Spidertrax spacers factory Moab's, Rubicon Express Flex arm 3.5" lift, Smittybilt XRC front bumper with D-rings, Body Armor Extreme rock slider steps, AEV snorkel, trimmed fender flares, Hella 8" HID driving lights
^^X2 From what I have seen most of the problems seem to be with the earlier builds. Mine has 4500miles..no issues (knock on wood) and a build date of March 30th 2012.
2012JKU half doors,40 Nittos,RJ60's,TFLA,Elkas,PS bumpers,PS Rockers(alum), ASFIR 4X4
The earlier builds thing is a myth. You normally don't start getting the MIL/check engine codes until about 10,000-12000 miles. Mine ran great even when it was erroring out. The clue is does it tick or not. If you go to the dealership and start a half-dozen of 2012's, you will here ticking on 3-4 of them. That ticking will get progressively worse until eventually you get the P0302 error or something similar. The Jeep will still run fine, but you will notice a slight hit in fuel mileage. I know someone with a Feb build date that just had a head replaced. They only recently determined the cause and I don't think they have implemented a fix in production yet. My driverside head was replaced a few months ago and mine is starting to tick again. I'm guessing that around 25,000 miles, it'll start to throw codes again.
Originally Posted by offcamber View Post
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