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-   -   2012 JKU Rubi Check Engine Light - Misfire Cylinder 6 (http://www.wranglerforum.com/f274/2012-jku-rubi-check-engine-light-misfire-cylinder-6-a-143071.html)

dbullion 02-29-2012 10:01 AM

2012 JKU Rubi Check Engine Light - Misfire Cylinder 6
 
A check engine light illuminated on my 2012 Rubi JKU (10,800 miles) this past Sunday. The code indicated "misfire cylinder 6". Took it to Maxwell Jeep in Austin Monday morning and got a call Monday afternoon saying it was ready to be picked up. The service rep said they flashed the computer with a program update and that the problem was solved.

I picked it up this morning and drove it for about 20 miles before the check engine light illuminated once again. Took it back to the dealer and received a call this afternoon saying that they were going to have to go into the engine to find the problem and should know something by tomorrow afternoon.

Has anyone else had a similar problem?

pkmcd99 02-29-2012 10:09 AM

Sounds like a bad coil

TommyD 02-29-2012 12:09 PM

My New 2012 wrangler unlimited rubicon wth 12,347 miles on it had the same problem. The dealer flashed the computer and the same thing happened to me...light came back on a day later. It is now sitting at the dealership getting a new head!!! Sound like you and I are having the same problem as the other people in the "ticking jeep" thread. My rubicon was delivered in late August of 2011.

tcass 03-17-2012 09:00 PM

ok, this virus is spreading. my check engine just came on. i got mine back in august. gonna take it in monday. lets hope its just something small. gonna have to check out the thread "ticking jeep".

cass

salepor 04-03-2012 06:45 PM

2012 Jeep Wrangler Check Engine Light at 10k miles.
 
I have a 2012 Jeep Wrangler Unlimited sport. I took it to the dealer ship two weeks ago and they flashed the computer. I drove off the dealer lot and five minutes later the light came back on. I took it back in and they are telling me that they need to order the cyl heads and replace them. I bought my jeep in Oct 2011. I had 10500 miles on the engine when the light came on.

Rb1boxer_3 04-03-2012 07:39 PM

Wow same here I have 14,000 miles and it just came on dealer said the exact same thing that it needed an update. And bam a few miles later it's on.

snikt 04-03-2012 07:44 PM

This problem sounds pretty wide spread, we need a poll or something of '12 owners and how many are having the problem

Jurhip 04-03-2012 08:08 PM

1. A CPU update will not solve a CEL. OBDII regulations state that CEL's are for emissions related malfunctions. Computers do not get old and nothing changed on your car to warrant an "update". It is dealer BS. They just clear the computer codes and hope for the best (if the vehicle is running well). For them, it's worth it and personally a strategy I agree with. A misfire may not mean all hell is about to break loose. It may never happen again. If it comes back on, then the dealer will actually investigate a bad part.

2. The problem does not sound widespread. How many 2012's sold. I see 5 posts.

snikt 04-03-2012 08:20 PM

Quote:

Originally Posted by Jurhip (Post 2215987)
1. A CPU update will not solve a CEL. OBDII regulations state that CEL's are for emissions related malfunctions. Computers do not get old and nothing changed on your car to warrant an "update". It is dealer BS. They just clear the computer codes and hope for the best (if the vehicle is running well). For them, it's worth it and personally a strategy I agree with. A misfire may not mean all hell is about to break loose. It may never happen again. If it comes back on, then the dealer will actually investigate a bad part.

2. The problem does not sound widespread. How many 2012's sold. I see 5 posts.

This is one of like 200 threads on the issue

More like 500 posts

kjeeper10 04-03-2012 08:32 PM

Quote:

Originally Posted by snikt

This is one of like 200 threads on the issue

More like 500 posts

Lol....

But sorry guys. Seems like a common problem :(

glowingghoul 04-03-2012 08:32 PM

Quote:

Originally Posted by snikt (Post 2216036)
this is one of like 200 threads on the issue

more like 500 posts

bs.

glowingghoul 04-03-2012 08:34 PM

Quote:

Originally Posted by kjeeper10 (Post 2216092)
Lol....

But sorry guys. Seems like a common problem :(

What the hell are you basing that on? That BS post about 200 threads?

It's like every non 2012 owner WANTS this to be a problem.

Most would still rather have the Pentastar repaired, then a perfectly (oil burning) working 3.8.

snikt 04-03-2012 08:35 PM

Quote:

Originally Posted by glowingghoul (Post 2216108)
What the hell are you basing that on? That BS post about 200 threads?

It's like every non 2012 owner WANTS this to be a problem.

Most would still rather have the Pentastar repaired, then a perfectly (oil burning) working 3.8.

Don't blame us because you are blind

Look on the very first page, there is a 19 page thread on the issue, and there are other 4-5 page posts scattered around

glowingghoul 04-03-2012 08:37 PM

Quote:

Originally Posted by snikt (Post 2216114)
Don't blame us because you are blind

Look on the very first page, there is a 19 page thread on the issue, and there are other 4-5 page posts scattered around

Originally Posted by snikt http://cdn.wranglerforum.com//images...s/viewpost.gif
this is one of like 200 threads on the issue

more like 500 posts


You said 200 threads and 500 posts. You're either an idiot, or a troll.

snikt 04-03-2012 08:41 PM

Quote:

Originally Posted by glowingghoul (Post 2216121)
Originally Posted by snikt http://cdn.wranglerforum.com//images...s/viewpost.gif
this is one of like 200 threads on the issue

more like 500 posts


You said 200 threads and 500 posts. You're either an idiot, or a troll.

Ever heard of exaggerating? Jeez you are annoying

http://www.wranglerforum.com/f33/upd...ad-137608.html
555 posts here

http://www.wranglerforum.com/f33/201...ed-131728.html
37 here

http://www.wranglerforum.com/f33/che...ht-148897.html
15 here

http://www.wranglerforum.com/f33/201...ng-139471.html

of course not every person in every post has the issue, but it's obviously common

etc.....

Jurhip 04-03-2012 09:46 PM

Most large threads have the same people posting, so number of posts is low.
So lets say 500 posts, 75% being non-repeat posts (which I think is generous). That 375 people.

How many 2012 Wrangler have been sold. Maybe 40,000 (they sold like 9300 in February)?

Now how many of the 375 posts are about the same problem. Lets say 80% (which I think is also generous).

So, less than 1%. That is not common. Its common on the internet. It is not a "common" issue. It sucks when it happens to you, but that doesn't make it any more common.

demarpaint 04-03-2012 09:52 PM

Quote:

Originally Posted by Jurhip (Post 2216548)
Most large threads have the same people posting, so number of posts is low.
So lets say 500 posts, 75% being non-repeat posts (which I think is generous). That 375 people.

How many 2012 Wrangler have been sold. Maybe 40,000 (they sold like 9300 in February)?

Now how many of the 375 posts are about the same problem. Lets say 80% (which I think is also generous).

So, less than 1%. That is not common. Its common on the internet. It is not a "common" issue. It sucks when it happens to you, but that doesn't make it any more common.

I hope you're right, but in a few conversations with people owning 2012 Wranglers, and literally just getting off the phone with a Chrysler tech buddy this problem is gaining steam.

kjeeper10 04-03-2012 09:52 PM

Quote:

Originally Posted by Jurhip
Most large threads have the same people posting, so number of posts is low.
So lets say 500 posts, 75% being non-repeat posts (which I think is generous). That 375 people.

How many 2012 Wrangler have been sold. Maybe 40,000 (they sold like 9300 in February)?

Now how many of the 375 posts are about the same problem. Lets say 80% (which I think is also generous).

So, less than 1%. That is not common. Its common on the internet. It is not a "common" issue. It sucks when it happens to you, but that doesn't make it any more common.

The problem is common not a common problem.., wait does that make sense? :hide:

Jurhip 04-03-2012 09:57 PM

Quote:

Originally Posted by kjeeper10 (Post 2216588)
The problem is common not a common problem.., wait does that make sense? :hide:

You do understand how the internet can "magnify" the prevalence of any issue. Only people that tend to have problems post on these, hence they are "common" on the internet, but not common in real life.

I am not saying there isn't an issue. I just don't think it is a common as these forums make it seem.

Jurhip 04-03-2012 09:58 PM

That or you are pulling my leg for the admittedly poor wording :)

kjeeper10 04-03-2012 10:07 PM

Quote:

Originally Posted by Jurhip
That or you are pulling my leg for the admittedly poor wording :)

Lol

Confusing myself :D

I understand you though.

For example "leaks"

Blackened 04-03-2012 10:13 PM

http://www.wranglerforum.com/f33/che...ht-148897.html

Book 04-16-2012 03:24 PM

2012 Sahara CEL-"misfire cylinder 2"
 
My Jeep purchased in October 2011 began this malfunction at about 12k miles. I have cleared the codes and like others, the CEL promptly reappeared within a few miles. There seems to be a power loss as well as a rougher idle since this issue presented itself.

pat@fieldsauto.com 04-16-2012 04:12 PM

[QUOTE=Jurhip;2215987]1. A CPU update will not solve a CEL. OBDII regulations state that CEL's are for emissions related malfunctions. Computers do not get old and nothing changed on your car to warrant an "update". It is dealer BS. They just clear the computer codes and hope for the best (if the vehicle is running well). For them, it's worth it and personally a strategy I agree with. A misfire may not mean all hell is about to break loose. It may never happen again. If it comes back on, then the dealer will actually investigate a bad part.

That's not entirely true. There are numerous updates from things like the engine to heated seats. I think the '12 Grand Cherokee has 6 or 8 software updates. CEL comes on and the tech searches the database for the fault code and what it is for.

I'm not an expert by any means, but in this day and age a dealer isn't going to clear a code and hope for the best. Chrysler wants it fixed so owner satisfaction will improve. FFV= fix first visit.

demarpaint 04-17-2012 07:12 AM

I read somewhere that Chrysler was celebrating the production of their millionth Pentastar engine. That is a lot of engines. Are their actually one million Chrysler products on the road with this engine? Or are there a lot of these engines sitting in stock waiting to be installed? Do they fix the engines sitting in stock, or do the install then hoping not all of them are bad? Just wondering that's all. It took Ford and GM years to resolve production issues with a few of their engines, is Chrysler any different?

Dusthol 04-17-2012 09:45 AM

My check enging lite came on. I checked it. Cyl.#6 misfire. Cleared code. Have been driving 2 weeks without any further issues.

Arkhammar 04-19-2012 07:13 PM

New Heads for my 2012 JKU Sahara
 
Well...I am sad to report the following. My 2012 JKU Sahara (currently has 12,700 miles, bought new in late NOV 2011) had the infamous CEL appear ~2wks ago... First visit to a Jeep dealer they flashed the system and cleared the codes and sent me on my way saying it was a random misfire on Cyl 2. And it should all be fixed. Thought OK. Good. Two days later the CEL comes on again! Call same dealer and they said it would be a week before they could get me in... so I called another dealer and they got me right in. New dealer did more thorough investigation and found that I have low compression (cyl 2) and they will need to replace the heads! Can't say I'm happy ..but I can say that Jeep has taken the bull by the horns and is getting it fixed and paying for a rental as the heads are on back order! Apparently there is a back order of over 400. Hope I get moved up the list or the supplier pumps out some parts. Will keep everyone posted.
I will say that if this had happened one mile after my warranty had expired that this post would be less pleasant.:eek:

Kelsey73 04-19-2012 07:20 PM

Quote:

Originally Posted by tcass (Post 2151275)
ok, this virus is spreading. my check engine just came on. i got mine back in august. gonna take it in monday. lets hope its just something small. gonna have to check out the thread "ticking jeep".

cass

At least you got the CEL... mine's ticking pretty good and both dealerships locally gave me the "all normal"

Fishinfool 04-19-2012 08:17 PM

My head came in this week after 3 check engine codes all cylinder 6 misfire. Only took about 8 days to get the head. Scheduled for install Monday/Tuesday of next week. Will report back after install.

Arkhammar 04-20-2012 03:41 PM

The earliest my heads will arrive is the end of April. Have I mentioned this is the first new vehicle I purchased that had a MSRP of over 40K??


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