Potential 2012 Pentastar issue? - Page 17 - JeepForum.com
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post #241 of 650 Old 04-09-2012, 11:36 AM
LIJeepJC
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Quote:
Originally Posted by GreenRenegade View Post
So, how much ticking are we talking about? When the engine is cold, it's ticks like a timebomb. Picks up speed as the rpms go up. Sounds really loud now that I have the soft doors on. Doesn't matter if it's cold or warm outside.
After a minute or so, it doesn't tick anymore.
Is this what we are talking about?

Dan
This sounds to me that your hydraulic lifters are the problem.

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post #242 of 650 Old 04-09-2012, 05:47 PM
zolon
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Service appointment Wednesday. Will be printing out a few of these threads so they don't pretend there is no issue.

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post #243 of 650 Old 04-09-2012, 06:53 PM
gily25
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There's a comparable thread at wrangler forums if you want to print that too. I think that one has more build dates.

iPhone app user; excuse typos...thanx.
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post #244 of 650 Old 04-09-2012, 09:19 PM
chrisjsmith4
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Surgery scheduled for Monday. Hopefully it won't take long.

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post #245 of 650 Old 04-10-2012, 08:45 PM
mc2065
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Quote:
Originally Posted by Rivet View Post
My check engine light/ ticking was happening well before the ECO light stopped coming on.
I do not think that ticking is from the injectors. Yes the injectors do make noise but the ticking I was experiencing was more of a valve chatter. And it didn't start till I had about 8 thousand miles and at cold starts it was really noticeable. And the valves for the #2 cylinder were "burnt up" according to the tech that is working on my jeep.
Just picked a buddy from Jeep, same diagnosis following engine light and rough idle on his '12 Grand Cherokee with penta & 24K on clock. Tech told him 81 vehicles are ahead of him to receive the backordered parts nationwide as a result of a STAR inquiry (tech website). Among the parts was a right side head. Hold long have guys been down?

OME lift 619/617, JKS front trackbar & rear trackbar & brace, Procomp 7005 & 285/70/17 Duratracs, AEV Procal, Poly Perf. Frt LCA's, Rigid D2's, Vision X Solstice on rear
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post #246 of 650 Old 04-11-2012, 10:42 AM
chrisjsmith4
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Well I had my jeep while parts were on order. Took a little over a week to get the parts shipped in.

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post #247 of 650 Old 04-12-2012, 12:04 AM
offcamber
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Weird, they got the parts and replaced mine in a day...maybe because here in Dallas we are close to the distribution center?

Quote:
Originally Posted by chrisjsmith4 View Post
Well I had my jeep while parts were on order. Took a little over a week to get the parts shipped in.
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post #248 of 650 Old 04-13-2012, 06:31 AM
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If his dealer is in the Bellingham, Washington area - the closest distribution center is in Portland OR.

If it's available "locally" (at their closest distribution center) most dealers can get it in a couple of days. Dealers get regular trucks from their distribution center (depot.)

There are other ways to order parts if they are not available at their depot. The dealer has access to check which depots across the country have stock.
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post #249 of 650 Old 04-13-2012, 07:15 AM
mini-me
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So I definately have the same noise. No other issues, no light. Took it to the dealer they acted like they have never heard of this issue. But it's documented. Runs fine for now, build date of 9/11.

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post #250 of 650 Old 04-14-2012, 10:46 AM
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Originally Posted by mini-me View Post
So I definately have the same noise. No other issues, no light. Took it to the dealer they acted like they have never heard of this issue. But it's documented. Runs fine for now, build date of 9/11.
It'll get louder in a few thousand miles. You'll notice your gas mileage drop a bit then the check engine light will come on and it'll throw code P0304 or P0302. Then you will take it to the dealer and they will just flash the computer and give you "that should fix it, but bring it back if it happens again". The light will probably come back on while you are driving home. You'll take it back and then they will probably replace the head.
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post #251 of 650 Old 04-14-2012, 11:36 AM
Greenway
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Mine has over 19,000 miles noise is not as loud as before. Build date of 8/11

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The small things that you come across everyday, The norm that's overlooked until it is unseen, then when that comes you miss life, one thought, one smell, one sound can take you back home, then you realize your a thousand miles away, and then you get sick....
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post #252 of 650 Old 04-14-2012, 11:42 AM
chrisjsmith4
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Wow I thought mine was bad at 10 k miles.

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post #253 of 650 Old 04-14-2012, 01:39 PM
plac
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my build date 10/11. no real noise yet. 500 miles.

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post #254 of 650 Old 04-14-2012, 01:55 PM
Jam86
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Not paranoid... its what the warranty is for.
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post #255 of 650 Old 04-18-2012, 10:11 AM
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2012, 2 door Rubicon, Crush.
Build date of 3/12...
Roughly 400 miles. So far so good...
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