Survey- For those with misfire issues

[Idlethunder]

That really parallels my own 2022 experience thus far.

I looked around and I can't find any TSB or any other communication from Jeep that applies to a 2022. Looks like they are perfect and Jeep hasn't had any complaints (HAHAHAHA)
I looked for PCM related bulletins and found nothing for the 2022, which I find weird.

Our issues do seem very similar. I got an email from a guy named Alexey from AlfaOBD on Wednesday and he said an update for the 22 Gladiator is in the works but couldn't promise when it would be released.

My dealer called a bit ago and said I can pick it up. They did not get into the engine but found nothing wrong and since it hasn't thrown a code, nothing showed on their scan. At this point all I can do is keep an eye on it and if it acts up again, leave it with them and let them tear into it.

They did update my PMC as shown on customer satisfaction notice z37. I will run Jscan again for a few days and see if that made a difference.

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[ShadowsPapa]

Our issues do seem very similar. I got an email from a guy named Alexey from AlfaOBD on Wednesday and he said an update for the 22 Gladiator is in the works but couldn't promise when it would be released.

My dealer called a bit ago and said I can pick it up. They did not get into the engine but found nothing wrong and since it hasn't thrown a code, nothing showed on their scan. At this point all I can do is keep an eye on it and if it acts up again, leave it with them and let them tear into it.

They did update my PMC as shown on customer satisfaction notice z37. I will run Jscan again for a few days and see if that made a difference.

Thanks for the info - I'm "chomping at the bit" for that AlfaOBD 2022 update. We're into the 2023 order time, with builds to start in a few weeks so..........

Mine was built way after that z37 thing came about so I'd hope that's the reason mine has no notices, no TSBs, no nuttin. It was built so late I'd hope it has all of the latest stuff. At east until next week LOL

 

[Idlethunder]

Thanks for the info - I'm "chomping at the bit" for that AlfaOBD 2022 update. We're into the 2023 order time, with builds to start in a few weeks so..........

Mine was built way after that z37 thing came about so I'd hope that's the reason mine has no notices, no TSBs, no nuttin. It was built so late I'd hope it has all of the latest stuff. At east until next week LOL

After having the PCM updated and the Gladiator back since Friday evening, I have put a little over 250 miles on it this weekend. No problem at all with the update and the misfires have dropped drastically. A week ago, Jscan showed an average misfire count of around 130 on short 5 mile drives after the truck had not been started for at least an hour and on drives of 20 miles or more they would be well over 200. The highest count since the update on short drives was 24. Today I did a round trip of approx. 100 miles and had 43 when I pulled back in the driveway. The auto also shifts better, and my mileage has improved a little.

 

[Idlethunder]

Thanks for the info - I'm "chomping at the bit" for that AlfaOBD 2022 update. We're into the 2023 order time, with builds to start in a few weeks so..........

Mine was built way after that z37 thing came about so I'd hope that's the reason mine has no notices, no TSBs, no nuttin. It was built so late I'd hope it has all of the latest stuff. At east until next week LOL

When the light came on showing misfires, I bought a Jscan license, Vgate iCar Pro Bluetooth 4.0 BLE adapter and one of the forum recommended gateway bypass cables for live monitoring. After looking at the security gateway, I also ordered one of zautomotive’s extension cables and that came in yesterday. Rather than deal with moving the cables twice, I waited until the extension came in before connecting the bypass cable. Live monitoring up until last night was all done with the Bluetooth adapter connected to the factory OBD port and it worked fine showing misfires. Last night I connected the extension cables and the bypass cable. I also made a few changes such as changing the low TPMS settings, turned on the hood alarm, and set it so the fogs will function with the high beams on. All changes worked perfectly thru Jscan and all now function as they should after the changes.

This morning I drove to work with live monitoring on and every few seconds, Jscan showed “Not Connected” on random cylinders for a split second but still showed a few misfires. My first thought was a problem with one of the cables but on second thought, the changes all work properly so the cables must be doing their job. Maybe the problem is the adapter is a little slow. I remembered reading in one of your posts that you bought a better OBD adapter because your first one wasn’t as fast as you would have liked. Was the problem something like I am seeing or was it something else?

 

[ROC]

I just did the pcm recall on Tuesday and literally within 10 miles of the reprogram my check engine light came on. Dealer was busy and couldn’t look at it I took it to my local shop to scan it and it came back random misfire they cleared the light and it came back on around 100 miles. I gotta bring it back and who knows how long they are gonna have it. I don’t want to get my truck back with all new mystery scratches as there’s not a mark on the truck yet. I may reach out to a lemon lawyer just to weight out my options. I’ve heard stories of trucks being at dealers for months over the misfire issues these trucks have.

 

[jbehrn]

I just did the pcm recall on Tuesday and literally within 10 miles of the reprogram my check engine light came on. Dealer was busy and couldn’t look at it I took it to my local shop to scan it and it came back random misfire they cleared the light and it came back on around 100 miles. I gotta bring it back and who knows how long they are gonna have it. I don’t want to get my truck back with all new mystery scratches as there’s not a mark on the truck yet. I may reach out to a lemon lawyer just to weight out my options. I’ve heard stories of trucks being at dealers for months over the misfire issues these trucks have.

I’m having the same issue. PCM applied last week, drove it about 100 miles and CEL came on. UConnect shows an issue, but the CEL only stays light for a minute. The is the 4th time this has happened. Dealer doesn’t see anything when they scan for errors.

 

[P0300!]

I picked up the Gladiator today with the new engine installed. On the drive home, I noticed the truck drove MUCH better than before. Fingers crossed.

 

[oceanair1]

How has everyone's Jeeps been lately? Any resolution? I bought a 2022 gladiator in early June and not a month later and my check engine light went on. Dealer reset the light and said if it comes back bring it back, which it did. Then they had it for a week and reset the computer system. And light is back on. I just brought it back again so we'll see what they say the issue is. Our neighbor is a mechanic at a Chrysler Jeep Dodge dealer and said after coronavirus they've been having issues since they had to get parts from other places. So bummed.

 

[Idlethunder]

Approx 400 miles since dealer reset the CEL and updated PCM software on my 1/22 build 22 Gladiator. So far the light hasn't come back on. Jscan still shows multiple cylinder misfires, mostly on #s 2 and 4 but not as many as before the update 2 weeks ago. What is strange is I now have a slight knocking on the passenger side of the truck when idling that wasn't there a week ago. Right now no plans to revisit dealer until CEL comes on again,

 

[ShadowsPapa]

Our neighbor is a mechanic at a Chrysler Jeep Dodge dealer and said after coronavirus they've been having issues since they had to get parts from other places. So bummed.

A mechanic would have no idea about where parts are sourced from or what parts come from where. Speculation. And as an ISO company, Jeep (FCA) can't simply say "if ABC can't supply us, simply order from XYZ.
All changes must be run through the system and QA.
It's really not fast or easy to just start shopping around for parts.

"Issues" have been going on since way before covid. What's happening now is LACK of parts - and not just automotive. I heard quite a bit from a guy high up in a local manufacturing company - and they can't get certain parts. A cousin bought a new hay mower and windrower. He said his neighbor went to get the same one and went to the factory and their lot is sitting with dozens of those machines sitting waiting for a final part - the PTO shaft. And guess where those are made..........RUSSIA.
A lot of the "chip" issues we see now are not covid but are war related. Russia and Ukraine supply materials used in electronics manufacturing. Neon, of all things, comes from Ukraine - and it's used in the manufacturing of electronic chips.
The electronics used aren't made by 10 different companies in the world, some of those parts are made by 2 or 3 companies - so when there's a shortage, a car maker can't just buy from another source - they sit and wait.

 

[cthabsfan]

Build date: 12/6/2021

Mileage when it first occurred: around 8000

How many times has it occurred:
Occurred on the highway during a road trip when I attempted to overtake a slow vehicle on the Jersey Turnpike. MIL flashing pulled over to a rough idle. Turned car off and sat for about 10 minutes before I had to get off the highway. MIL did not come back on during trip off highway. I have had the MIL come on a couple of times driving at lower RPMs, but without any rough idle. Drove it the rest of the way to Delaware from Connecticut and had the dealership look at it down there. They flashed the ECM and said there were no codes saved. Drove it home without seeing another light.

About a month later, out of curiosity, I accelerated hard on a highway onramp and the same behavior was observed. MIL flashed and car idled roughly when pulled over. I ordered a Bluetooth OBD2 and JSCAN License and did the same thing again (high RPM on highway onramp) and recorded >300 misfires on cylinder 1. Currently waiting for a dealership to be able to see the vehicle; local dealerships are generally two weeks out from being able to make an appointment.

There is also an audible tick at idle even after the car has warmed up. Suspecting the same cam issues commonly referred to in this thread.

What exact codes did it throw: No codes were thrown

Is the issue on going? Y

If so, what has been done to try to solve the issue?
Dealership in Delaware updated the ECM to address the open recall. No other actions have been taken.

Was the issue ever fully resolved? Not yet

 

[cthabsfan]

Build date: 12/6/2021

Mileage when it first occurred: around 8000

How many times has it occurred:
Occurred on the highway during a road trip when I attempted to overtake a slow vehicle on the Jersey Turnpike. MIL flashing pulled over to a rough idle. Turned car off and sat for about 10 minutes before I had to get off the highway. MIL did not come back on during trip off highway. I have had the MIL come on a couple of times driving at lower RPMs, but without any rough idle. Drove it the rest of the way to Delaware from Connecticut and had the dealership look at it down there. They flashed the ECM and said there were no codes saved. Drove it home without seeing another light.

About a month later, out of curiosity, I accelerated hard on a highway onramp and the same behavior was observed. MIL flashed and car idled roughly when pulled over. I ordered a Bluetooth OBD2 and JSCAN License and did the same thing again (high RPM on highway onramp) and recorded >300 misfires on cylinder 1. Currently waiting for a dealership to be able to see the vehicle; local dealerships are generally two weeks out from being able to make an appointment.

There is also an audible tick at idle even after the car has warmed up. Suspecting the same cam issues commonly referred to in this thread.

What exact codes did it throw: No codes were thrown

Is the issue on going? Y

If so, what has been done to try to solve the issue?
Dealership in Delaware updated the ECM to address the open recall. No other actions have been taken.

Was the issue ever fully resolved? Not yet

Update: got a code from the misfires this morning: P0301. Cylinder 1 misfire.

 

[ShadowsPapa]

Update: got a code from the misfires this morning: P0301. Cylinder 1 misfire.

Catch it in the act if you can and do a freeze frame to capture the engine environment and perhaps nail down if it's ignition misfire or otherwise.

 

[cthabsfan]

Catch it in the act if you can and do a freeze frame to capture the engine environment and perhaps nail down if it's ignition misfire or otherwise.

I did get a freeze frame. Not sure entirely how to interpret it. Definitely happened at high RPMs.

 

[Lunentucker]

My cylinder 5 misfire issues seems to have been corrected.
They swapped 3 and 5 coil packs and plugs and flashed the Z37 update, and there have been no issues since then.
The plugs were clean, my oil analysis was good, and I have maxed the RPM's out under uphill load several times to try to get the light to even flicker. Nothing.

Was it the flash?
Was it poor connections or poorly installed ignition components?
I don't know, but I'm damned glad it's fixed!

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