Record for earliest or first CEL

[Barnaby’sdad]

It's all to continue to amuse you. A plot, an evil plan.

It's not news worthy - it's to try to prove to the negative nellies out there that failure is the abnormal, success is the norm. All some see is how bad things are - they live in a forum and believe all they read. It's like someone coming in and saying all ravens are black (that's all they have ever seen) while someone else comes in and says - no, here's a white one.
You say Jeep should be ashamed with their "record" of all of these failures.
I'm saying - what record of failures? There's millions more successes.
But you laugh when someone points to the successes, countering those who would believe that if you have a 3.6 you WILL see a CEL and Jeep should be ashamed.
Go ahead, be amused. Glad we could keep you happy.

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[Charles 236]

I run 89 in my 21 JT mainly because i get knocking rolling into the throttle at 1,200 RPM in first gear with 87.

I never realized how touchy spark plugs could be until recently. I changed the plugs in our Forester XT. One had a crack in the porcelain. Couldn't see it when I installed the plugs. I hit the gas to merge on to the freeway, the car shook like it was misfiring bad, and the dash lit up like a Christmas tree. Luckily it was cylinder #2 which is the easiest to replace on the FA20. The parts department exchanged it with no questions. Makes me wonder how common a crack in a spark plug is.

I have seen spark plugs fail with no apparent reason. I say "apparent" because they do fail for a reason, sometimes it is a manufacturing defect, but more often an improper installation causes the failure. Over tightening spark plugs is a sure fire (pun intended) way to create the potential for misfires because of cracked ceramic. It is a good bit more work to change the spark plugs on the upgraded Pentastar engine because of the work to get to the spark plugs, so I would definitely use the correct plugs and not over tighten them. Just my two cents.

 

[Chestnut]

The stresses they go through, how perfect the spark must be, the pressures and heat they operate under.....

Yeah it's getting worse with all the turbo engines as well. Spark Plug interval is 60k miles on both my Subarus vs 100k for the 3.6L. The ones for the forester are the same Moon rock iridium titanium w/e and sold for $26 each...

I read it. I get it. I just don’t see what it has to do with me being amused whenever someone is like “the vehicle I spent ~$40-60K on didn’t fail five minutes after it rolled off the lot.”
Essentially I agree with you…it isn’t/shouldn’t be noteworthy, but folks feel the need to make a note of it, so I’m going to continue being amused whenever someone makes note of it.

I have found the "my $40-60k jeep should be perfect" to be entertianing. Lets face it yees that's a lot of money but it's not like these are way above the median car price. 2020 that price is $48,000 ... If it was a $200k G 63 AMG yeah maybe the level of perfection should be a bit higher.....

 

[Sandevino]

2600 miles on my previous gladiator. Took it in and the MF’er cleared itself waiting in line to drop it off. Same thing the two other times it occurred….the CEL cleared itself 500 feet from the service bay door. It’s like there’s a code clearing geo-fence on this thing….lol. Fourth time and with 6000 miles on the clock it messed up and threw a code while getting the oil changed.

The dealership fixed it by replacing plugs and flashing the PCM. Three weeks later I sold it and picked up an Overland diesel.

 

[FitfulGoat]

And the vast majority do - the internet skews perceptions of how many troubles there are in 20,000 miles or less. Forums magnify the issues to make them look common or plentiful. Forums are where people gather to complain not gather to praise their 100,000 trouble-free miles. No one joins anything but a church to sing praises. Fakebook, forums, all of it - take a huge magnifying glass to problems. Misfires are not common unless you are in a forum or fakebook page.
When you visit your free clinic or a hospital it looks like mankind is sickly and doomed (well, there may actually be something to that, but that's another whole forum and topic)
When you go to a support group, every member is dying of cancer, is a cancer survivor or has a family member with cancer.
When you are looking at the internet, everyone has an engine failure or something of that magnitude.
Take the numbers of the 3.6 sold since this generation was put into most models (not since introduction with 2015 but since it hit all Jeep models) - hundreds of thousands. Take the number of forum members, then take the number of members with a CEL - you will find the misfire or CEL issue to be smaller than 1%.
That's pretty damned good considering this engine runs on the bleeding edge much of the time. It runs at or near stoich a lot, and the examples of these going high miles with no issues is going to be huge compared to a fraction of a percent who make their voices heard by the world on fakebook and forums.
Your view of vehicle problems is skewed by taking your information from a forum. (and by people who don't know and have no experience and yet claim to know)

Do the math - look up the total sales figures for the 3.6 and compare that to the numbers here who have issues. And consider - some have posted about their issue in multiple threads and multiple times, like a house of mirrors, making it look like more people have more problems.

The internet has ruined the perceptions of reality and skewed true numbers.



I point it out to show people like you that your vision is skewed and distorted. Everyone points out all of the failures - I'm saying yeah, all of the people in the graves at a cemetery are dead, too.
You ignore all of those who do NOT come in talking about the 99.xx% who have no problems and even blast them for doing so. We are only trying to counter this bull crap perception of huge rates of failure.
Go look at the forums for Ford, Chevy/GM, and others - you'll find the same thing - nothing but how many failures there are. Everyone has paint bubbling and coming off and yet you would point out and see it as a Jeep issue.
Multiple companies have had steering issues - and yet you would point out it's a Jeep thing (go tell the Cadillac people that it's only a Jeep thing)
Being a former tech and troubleshooter, I tend to hang out in forums and pages devoted to multiple makes and models and see the broader picture.

I point out those trouble-free miles not because it's an exception, but to counter people like you who believe it is an exception and that failure is the rule.

This is exactly like the fallacy of perceived violence. We associate risk/fear based on how visible and “scary” something is rather than on true risk factors and likelihood. IE: People are far more scared to fly in a plane versus drive in a car despite the statistics pointing to the greater risk being driving.

We come on a forum and the perception skews our judgement and association of failure to a specific make/model as we are inundated with just a small sample size and the majority have major issues.

 

[ivanfrank]

It was about 15 miles for us, driving down the highway after purchasing from the dealer. Truck abruptly limited itself to 40mph and was flashing the ETC. Very scary.

We took it back and was hard to replicate, they didn't do much. Happened one or two more times before I read something here and "pushed in" all the fuses -- never happened again.

Now we recently get the letter from Jeep saying that its a recall/service bulletin and to bring it in for a software flash. We were pioneers

 

[Randonexplosion]

I was picking mine up at the dealer and the guy pulled it in and left it running so I could check it out. I got in and noticed the CEL right away. They were pretty embarrassed and took it into the shop asap. It was a code for the DEF heater I think but it hasn't returned. See what happens this winter.

 

[ZoMojave]

I am confused with all this $40-$60k JT conversation. Isn't it now $50-$70k?

If all expensive vehicles were trouble free, Bentley dealers wouldn't need technicians.

 

[ShadowsPapa]

I am confused with all this $40-$60k JT conversation. Isn't it now $50-$70k?

If all expensive vehicles were trouble free, Bentley dealers wouldn't need technicians.

....to be continued........

 

[Splooter]

I picked up my brand new 2021 Mojave from the dealer and when I started it up there was a CEL. We were the last ones there since they were closing for the night. I got it home and put on my OBDII reader and it turns out it was the thermostat. Salesman said, no problem, we will get you a new thermostat.

A few weeks it comes in and they put it in. As I was waiting, I saw the tech taking it for a test drive. I strike up a conversation when he gets out and I ask if everything was good and he says “I shouldn’t tell you this, but there was no thermostat in there. Looks like they forgot to install it”

Lovely. Been running fine since then, good thing I bought it in Dec and it was pretty cold while I waited for the thermostat

 

[ShadowsPapa]

“I shouldn’t tell you this, but there was no thermostat in there. Looks like they forgot to install it”

Uh, seriously?
When you change the thermostat, you replace the whole housing. There's a spring and you have to push and compress the spring as you put the bolts in.
You can't leave the thermostat out as it's part of the housing.
And you'd bloody well know it if you were putting in a housing that was broken (missing the thermostat portion) because it is crazy in-your-face obvious. Someone in Mexico had a bit too much to drink that day.

This is the "by the book" installation procedure -

During installation, press on the housing to
compress the spring until the fasteners
are snug to help ensure that the housing is
installed correctly

good thing I bought it in Dec and it was pretty cold while I waited for the thermostat

Actually, no, winter is a bad time to have no thermostat! The engine will run very cold for a long time - take forever to warm up.
You are better off having that screw-up in the summer when the stat is more likely to be open fast anyway.
BAAAD idea to have no thermostat in the winter! Harder on engine.

 

[Splooter]

Uh, seriously?
When you change the thermostat, you replace the whole housing. There's a spring and you have to push and compress the spring as you put the bolts in.
You can't leave the thermostat out as it's part of the housing.
And you'd bloody well know it if you were putting in a housing that was broken (missing the thermostat portion) because it is crazy in-your-face obvious. Someone in Mexico had a bit too much to drink that day.

This is the "by the book" installation procedure -

During installation, press on the housing to
compress the spring until the fasteners
are snug to help ensure that the housing is
installed correctly



Actually, no, winter is a bad time to have no thermostat! The engine will run very cold for a long time - take forever to warm up.
You are better off having that screw-up in the summer when the stat is more likely to be open fast anyway.
BAAAD idea to have no thermostat in the winter! Harder on engine.

I learn something new everyday. Other than that first issue, it’s been solid. Knock on wood.

 

[ShadowsPapa]

learn something new everyday.

That's always my goal - to learn something new every day.
I figure it's a good day when I learn something new.

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