Survey- For those with misfire issues

[Jhoussock]

Just took my 2020 rubicon 5,000 miles in for the check engine light. Had the auto start stop error a few times before it and then the check engine p0300 misfire. Light went off after two days. Jeep dealer “couldn’t find anything, maybe bad gas” I’m sure I have a long road ahead of me but as of now the only symptoms are the lights themselves Jeep drives normally, start stop functions properly.

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[jwork435]

So here we go again. Drove a whole 50 miles. This is time #3.

 

[Jhoussock]

So here we go again. Drove a whole 50 miles. This is time #3.

Just curious does anything happen when it missfires? I got my first of I’m sure many but nothing happened. Just the code came up.

 

[jwork435]

Just curious does anything happen when it missfires? I got my first of I’m sure many but nothing happened. Just the code came up.

Sometimes it runs rough. Most of the time this means that the light will blink. Sometimes it doesn’t blink just stays on solid. I was just reading North Carolina law about emissions and this vehicle will not pass an emission inspection with the OBD 2 MIL (CEL) on or if the vehicle has not completed a drive cycle after a repair. So-this is a big deal even if there is no “real malfunction.”

 

[Jhoussock]

Sometimes it runs rough. Most of the time this means that the light will blink. Sometimes it doesn’t blink just stays on solid. I was just reading North Carolina law about emissions and this vehicle will not pass an emission inspection with the OBD 2 MIL (CEL) on or if the vehicle has not completed a drive cycle after a repair. So-this is a big deal even if there is no “real malfunction.”

When you get the rough running and blinking check engine what do you do? I’m sure it’s in my near future so just planning ahead. Does it fix itself? Do you pull over and restart your vehicle?

 

[jwork435]

When you get the rough running and blinking check engine what do you do? I’m sure it’s in my near future so just planning ahead. Does it fix itself? Do you pull over and restart your vehicle?

You take it to the dealership.

 

[oztek]

Service Department called back after about a week in the shop. Turns out they decided not to replace the engine, and the metal they found was actually in the oil filter, and FCA confirmed it was not the issue, and not uncommon. I believe others have posted in the forums they have seen metal flakes in the oil filter.

The PO300 multiple cylinder miss fire is only happening on some code starts and they have identified other Gladiators with the same issue, but it is not consistent. In fact they said they are having problems consistently reproducing it since the weather here in KC is getting pretty warm. When they did reproduce it, the misfires quickly stopped after the engine temp increased.
At this point they are waiting on a pending software update which they believe will fix the misfire on cold start.

FCA told them to release the vehicle back to me until a software update is ready. If the light turns back on, I was told I could still drive it unless I notice it not running correctly / acting unusual or if the light flashes. If any of those happen I am to call them and bring it back in immediately.

Drove it a couple times since I got it back for a total of about 50 miles including an overnight cold start. No check engine light yet.
I decided to attempt to let the engine run for a few minutes after a cold start just to see if the light ever turns on before I leave my driveway.

Was planning on buying a few mods (Bed cover, tube doors, mirror's etc) but not feeling very confident that it won't go right back to the shop.

 

[cgflyer]

I feel that resale will be impacted either way as I will need to disclose the issue that happened if I ever sell it. I mean I could deceive the buyer if I ever choose to sell it but that would not be right.
I have a jeep cares case # so all this will need to be discussed before I agree to any repairs. I feel like this could qualify for the lemon law since it was a know problem right off the line.

if fixed, there is no need to disclose anything...

 

[jwork435]

Update for June 10th-I spoke with the GM of John Heister Jeep Sanford, NC this morning. He apologized and within 30min had another Gladiator in my driveway and picked up mine to take it back for service. My wife and I noticed that between services the light will come on after three or four stops and restarts. When it came on yesterday it was 90 degrees outside so I’m not so sure about the cold start theory. I do think there is something wrong with the computer software but that’s way outside my technical knowledge to speculate on. I got a text alert from service that it is being worked on so that part is good. FCA seems to have a problem with the Gladiator but I’ve been impressed with my dealer’s responsiveness. This is why I haven’t escalated my case up to this point. Good luck to us all.

 

[oztek]

Update for June 10th-I spoke with the GM of John Heister Jeep Sanford, NC this morning. He apologized and within 30min had another Gladiator in my driveway and picked up mine to take it back for service. My wife and I noticed that between services the light will come on after three or four stops and restarts. When it came on yesterday it was 90 degrees outside so I’m not so sure about the cold start theory. I do think there is something wrong with the computer software but that’s way outside my technical knowledge to speculate on. I got a text alert from service that it is being worked on so that part is good. FCA seems to have a problem with the Gladiator but I’ve been impressed with my dealer’s responsiveness. This is why I haven’t escalated my case up to this point. Good luck to us all.

Agree, the temperature theory does not really pass the smell test for me. Why would I just start seeing the problem after 1,600 miles. Why would this not be wider spread since the Gladiator has been out long enough to be exposed to many temperature conditions.
I've been a software engineer for many years and have worked on some embedded systems in the past. I have no automobile industry experience, but I hope they do not target software updates to work around specific engine defects that occur during the manufacturing process.

 

[OneBadHombre]

Are the Wranglers having the same problem or have they had the same problem in the past?

Does anyone know if there is any pattern with build dates? It sure does seem like something they would want to get ahead of prior to having to lemon a bunch of these.

I also wonder how common this is Vs the people that get Gladiator and never have an issue.

Sorry for having more questions than answers.

 

[Sal]

Service Department called back after about a week in the shop. Turns out they decided not to replace the engine, and the metal they found was actually in the oil filter, and FCA confirmed it was not the issue, and not uncommon. I believe others have posted in the forums they have seen metal flakes in the oil filter.

The PO300 multiple cylinder miss fire is only happening on some code starts and they have identified other Gladiators with the same issue, but it is not consistent. In fact they said they are having problems consistently reproducing it since the weather here in KC is getting pretty warm. When they did reproduce it, the misfires quickly stopped after the engine temp increased.
At this point they are waiting on a pending software update which they believe will fix the misfire on cold start.

FCA told them to release the vehicle back to me until a software update is ready. If the light turns back on, I was told I could still drive it unless I notice it not running correctly / acting unusual or if the light flashes. If any of those happen I am to call them and bring it back in immediately.

Drove it a couple times since I got it back for a total of about 50 miles including an overnight cold start. No check engine light yet.
I decided to attempt to let the engine run for a few minutes after a cold start just to see if the light ever turns on before I leave my driveway.

Was planning on buying a few mods (Bed cover, tube doors, mirror's etc) but not feeling very confident that it won't go right back to the shop.

I had the same issues with mine after they replaced the engine. I even had it towed in one morning so the can see that it’s not running right. They could figure it out. Fortunately by the time I got it back FCA had already agreed to buy back.
I would totally just keep taking it back until you can Lemon it.
My buddy’s dad was a Chief Engineer at Ford and he basically advised me that if you have a car giving you engine issues and the engineers can’t fix it. Get rid of if. The engine is not runny the way it was design to run. It will cause significant issues later on in life. These engines are designed from jump to run a certain way. So all the metal and alloys are based on that. If it’s start to run different then you’re putting stress on components that were never meant to do that.

 

[Gladiador]

Agree, the temperature theory does not really pass the smell test for me. Why would I just start seeing the problem after 1,600 miles. Why would this not be wider spread since the Gladiator has been out long enough to be exposed to many temperature conditions.
I've been a software engineer for many years and have worked on some embedded systems in the past. I have no automobile industry experience, but I hope they do not target software updates to work around specific engine defects that occur during the manufacturing process.

Same for me. I live in Charlotte and I have been having the misfire issue with warm weather

 

[jwork435]

I had the same issues with mine after they replaced the engine. I even had it towed in one morning so the can see that it’s not running right. They could figure it out. Fortunately by the time I got it back FCA had already agreed to buy back.
I would totally just keep taking it back until you can Lemon it.
My buddy’s dad was a Chief Engineer at Ford and he basically advised me that if you have a car giving you engine issues and the engineers can’t fix it. Get rid of if. The engine is not runny the way it was design to run. It will cause significant issues later on in life. These engines are designed from jump to run a certain way. So all the metal and alloys are based on that. If it’s start to run different then you’re putting stress on components that were never meant to do that.

So-they agreed to buy yours back. What did you do (or do you plan to do) to replace it? Have you given up on the Gladiator or will you think about buying one in the future? I really do like this truck. It’s a good concept minus all the issues. Thanks!

 

[Sal]

So-they agreed to buy yours back. What did you do (or do you plan to do) to replace it? Have you given up on the Gladiator or will you think about buying one in the future? I really do like this truck. It’s a good concept minus all the issues. Thanks!

I just ordered one. I’ve heard that those have better quality control. Not sure how true it is but i like the thought of it getting assigned to someone and they Giving the final approval. And this one the Vin is in the mid 210k my last one was high 109K so I’m hoping that after 100k vinsthat they finally got their shit together! (And yes I know that VINs are not always numerical)

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