Survey- For those with misfire issues

[Snook]

Ouch.
Apparently not cams or they'd have seen that damage right on top. First thing, IMO, would have been take off valve covers........ and go from there.
If they have found "shavings" one could wonder - what have they gotten into......


I got a call from a tech at the dealership I bought mine from. He asked if I wanted to bring mine in and they'd work it on as soon as possible and check it over. I suggested we hold off as when we were out and about today, it was working well, no CEL, no dinging, and only the typical misfires you'd see (although I have a feeling it's a bit on the high side.
I'll drive it as much as possible in the next couple of days and see how it does. I'm recording things as much as I can. JSCAN chokes on my tablet every time I try to log everything in the PCM.

do recommend getting one of theses scanners?

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[P0300!]

Question for this thread...

Has anyone had their engine replaced and how long did that take??

I'm wondering if they can realistically order, ship, and install a new engine in the number of days before the Lemon Law would kick in.

 

[ShadowsPapa]

Question for this thread...

Has anyone had their engine replaced and how long did that take??

I'm wondering if they can realistically order, ship, and install a new engine in the number of days before the Lemon Law would kick in.

No, but if they are trying, why would you send that letter and trip off the lemon law process?
It doesn't "kick in" - you have to serve notice.
If my engine was shot and it took 32 days to get it in stock and do the work - and they were trying hard, why would I go after them for a buy-back or replacement?

 

[Hootbro]

Question for this thread...

Has anyone had their engine replaced and how long did that take??

I'm wondering if they can realistically order, ship, and install a new engine in the number of days before the Lemon Law would kick in.

Pretty much what @ShadowsPapa said above. The dealership does care about any lemon law as that is on you to invoke. They are going to make a good faith effort to treat it like any other warranty claim. The second you start hinting at lemon law, the dealership is going to wash their hands of it and it will be between you and FCA corporate.

Do you want it repaired or wishing for it to fall into Lemon Law territory?

 

[P0300!]

I was just curious if anyone had any idea or recent experience on how long a Jeep engine replacement would take. The service rep warned it would be a "long time." Hopefully I'll find out more soon.

To your question about my preference, I just want a working truck! Hopefully, it's a couple of weeks and it gets fixed. That would be great! If "long time" means months, then I might look to a buy-back (although I'm sure that's a very long process too!) I do actually need a truck... this subcompact loaner is not a great stand-in.

 

[Benbean66]

My JT is in the shop right now to have the engine replaced at 41K miles. It started developing a knock a few hundred miles ago, and the dealer determined it to be a bad main or rod bearing. It's a lease, and all oil changes and services were done by the dealer. They found a complete unit in upstate NY, picked it up, and should be done by the end of the week.

 

[same_O_G]

Joined the club today. But mine is very different.
Cold start - fine. Shut it off for just a few minutes (like 5 or so) and start it - it's fine.
Drive it until hot - fully warmed up, go into a store or church or whatever for 20-45 minutes, come back out, it starts fine and runs fine for about 2-3 minutes and then goes into ding ding ding mode with blinking CEL.
First tine the CEL flashed several times and then locked on.
Second time - tonight - it flashed on and off a lot of times, dinged several times, then I pulled over to set my phone up to log misfires and it was bucking and running REALLY rough - one or two cylinders were not firing AT ALL. I'd say at least one cylinder was dead.
Then as I sat there and got the phone to log - it smoothed out and ran GREAT the rest of the way home!
The good - the bad cylinders were on the left bank.
One cylinder had 0 misfires from the second half of the trip home, another had 1 single misfire.

This is caught in the middle of it bucking badly - the numbers popped up as soon as my phone connected as if it gathered stored info from the truck -
The minimums are where things were when it first connected - of course it settled down and smoothed out as quick as I got the phone hooked up to log!

This was after we stopped 5 minutes for ice cream - maybe 10 miles home this time around...

It's almost as if it's temperature related.
Cold start - it's fine. Drive 10-15 miles, it's fine.
Stop, shut down, leave it for 20-45 minutes, start it - it's fine.
2 minutes after the hot start - it kicks DTCs.

2022/07/16 10:13:13.333
Faults found.
P0300
___________________________
2022/07/16 10:13:19.251
Faults found.
P0300
___________________________
'Clear fault codes' command sent
___________________________
'Clear fault codes' command sent
___________________________

What OBD reader are you using? I'm assuming that it's something you can just leave connected all the time?

 

[ShadowsPapa]

What OBD reader are you using? I'm assuming that it's something you can just leave connected all the time?

I have the OBDLink MX+ Bluetooth adapter - it could be left on all the time but it does take a tiny bit of power as I don't believe that one has a sleep mode.
That's how I get the connection to the "system".

For actual reading/monitoring, etc. I use 3 apps:

OBDJscan which is pretty current for the 2022 model year Jeeps. Great app, easy to use, well supported. Not well documented but via their FB page you have the developer's comments and user support. I love the search function - looking to set tire size, just type "tire" in the search area and it shows you what it has access to. No need to dig and scroll.

AlfaOBD which is not current and doesn't like my 2022 BCM! It can't read it at all - but it was a dream with my 2020 I just traded. Very poorly documented. The documents are old and mostly show the Windows version. To figure out what icons mean you have to play with it, or visit the RAM forums. Those guys and gals have over 1,000 pages of posts in a thread about AlfaOBD. Ram owners are serious about mods and tweaking their trucks.

OBDLink which comes with the adapter and is one reason the adapter is so expensive - you are buying the adapter and the software and free updates for your vehicle. I just let it download 2022 JT specific PIDs so it could talk to and understand the Jeep's responses. It still can't handle some FCA specific PIDs that are not SAE standard but it handles most stuff fine. It's a read/diagnose/GPS and performance monitor mostly. Can't make any changes to anything with it.

Lately I have been driving this new one enough to be able to leave the adapter on the OBD port, and one of the first things I put back in this truck was the phone mount.
I open one of the apps in my phone, make the connection, choose what to monitor and set the phone in the mount.
I've been watching the misfires so that's usually what my phone is watching lately.
If I park and go into a store for a short time, I leave my phone in the mount running the app and that way when I come back and start the truck, it starts monitoring misfires and restarts the count at 0 again. Once in a while I do a screen capture.

 

[same_O_G]

I have the OBDLink MX+ Bluetooth adapter - it could be left on all the time but it does take a tiny bit of power as I don't believe that one has a sleep mode.
That's how I get the connection to the "system".

For actual reading/monitoring, etc. I use 3 apps:

OBDJscan which is pretty current for the 2022 model year Jeeps. Great app, easy to use, well supported. Not well documented but via their FB page you have the developer's comments and user support. I love the search function - looking to set tire size, just type "tire" in the search area and it shows you what it has access to. No need to dig and scroll.

AlfaOBD which is not current and doesn't like my 2022 BCM! It can't read it at all - but it was a dream with my 2020 I just traded. Very poorly documented. The documents are old and mostly show the Windows version. To figure out what icons mean you have to play with it, or visit the RAM forums. Those guys and gals have over 1,000 pages of posts in a thread about AlfaOBD. Ram owners are serious about mods and tweaking their trucks.

OBDLink which comes with the adapter and is one reason the adapter is so expensive - you are buying the adapter and the software and free updates for your vehicle. I just let it download 2022 JT specific PIDs so it could talk to and understand the Jeep's responses. It still can't handle some FCA specific PIDs that are not SAE standard but it handles most stuff fine. It's a read/diagnose/GPS and performance monitor mostly. Can't make any changes to anything with it.

Lately I have been driving this new one enough to be able to leave the adapter on the OBD port, and one of the first things I put back in this truck was the phone mount.
I open one of the apps in my phone, make the connection, choose what to monitor and set the phone in the mount.
I've been watching the misfires so that's usually what my phone is watching lately.
If I park and go into a store for a short time, I leave my phone in the mount running the app and that way when I come back and start the truck, it starts monitoring misfires and restarts the count at 0 again. Once in a while I do a screen capture.

Awesome, thank you!

 

[P0300!]

Update...

I spoke to the service department and they are going to replace the engine. Unfortunately, they are backordered and there are many people in front of me in line. At this point they can't give a date or rough estimate, although they are trying to get that info from Jeep. The dealership has been great through this process, so I know they are working it hard.

 

[@californiajeeping]

I kinda laugh because everyone avoids the diesel because it has issues.....

My 2020 3.6l would have been in here for an engine replacement it had all the symptoms of bad cams multiple misfire light acceleration pinging and rough idle. It was very early on and i nursed it to 40k but man I am so happy im not in that boat anymore.

I really hope they have a campaign or can isolate the 3.6L JT issues down to a batch. Its crazy because there are hundreds of facebook posts on groups complaining of all the above issues with the 3.6L and the Stellanis has no fix.

Maybe thats why FCA sold to stellanis dump the dumpsterfire.

 

[Snook]

I kinda laugh because everyone avoids the diesel because it has issues.....

My 2020 3.6l would have been in here for an engine replacement it had all the symptoms of bad cams multiple misfire light acceleration pinging and rough idle. It was very early on and i nursed it to 40k but man I am so happy im not in that boat anymore.

I really hope they have a campaign or can isolate the 3.6L JT issues down to a batch. Its crazy because there are hundreds of facebook posts on groups complaining of all the above issues with the 3.6L and the Stellanis has no fix.

Maybe thats why FCA sold to stellanis dump the dumpsterfire.

Who is Stellanis?

 

[@californiajeeping]

Who is Stellanis?

https://en.wikipedia.org/wiki/Stellantis

 

[ShadowsPapa]

I kinda laugh because everyone avoids the diesel because it has issues.....

Uh, no - many avoid it for totally other/different reasons.
Some of us have no need or reason to have one (or the extra initial cost and maintenance.
It's not a good fit for the whole world, contrary to what some choose to believe. You love diesel, that's fine - but to poke at others for not loving your personal preferences...........

Its crazy because there are hundreds of facebook posts on groups complaining of all the above issues with the 3.6L and the Stellanis has no fix.

Maybe thats why FCA sold to stellanis dump the dumpsterfire.

You seem to imply it's all one root cause - which is far from the truth.
Dumpster fire? Reading the internet again, eh LOL. And what about the millions out there with hundreds of thousands of trouble-free miles?
Don't associate the pre-2016 troubles with the 2016 and later troubles like Jeep people love to do. Very different causes. Not even related other than symptoms. So really a person can only consider certain 3.6 engines made from 2016 and forward - and the modified 3.6 didn't come out in all FCA vehicles right away, so even after 2015 they can have different causes.
fakebook and forums are where people with problems gather to gripe and get support and justify their anger.

FCA didn't sell to Stellantis - it was a corporate merger and the entity "Stellantis" didn't exist before that merger, so there wasn't really a selling and Stellantis wasn't the buyer. PSA and FCA merged to form Stellantis.

 

[ShadowsPapa]

Update...

I spoke to the service department and they are going to replace the engine. Unfortunately, they are backordered and there are many people in front of me in line. At this point they can't give a date or rough estimate, although they are trying to get that info from Jeep. The dealership has been great through this process, so I know they are working it hard.

Very interesting and at the same time, odd. If it was a cam issue, like has been done with hundreds, they'd likely replace the lash adjusters, cams, followers, maybe phasers, VVL solenoids, that sort of thing. Apparently, although we really have almost no information to go on, it wasn't a cam issue. Or, the cause was undetermined. If there's a cam issue, it's really simple to tell by looking, or degreeing the cam to see if the profile is correct, measure lift at various points to ensure it wasn't mis-ground.
If it's a lack of hardness or heat treating, visual inspection should determine that, too.
So, IMO - this one is a mystery.
So many times in recent months I wish I had said yes to the service manager job at the local Jeep dealership - I'd LOVE to take some personal looks at these (even if on my own time)

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