Waiting for the tow truck.. My 2023 Gladiator Mojave has all of 3500 original mikes. We take a weekend getewayand around 250 mi the engine warning li

[mkopec]

Waiting for a tow. I have only 3500 miles on my 2023 Mojave, and we took a weekend trip. At 250 mi the engine warning light starts flashing. It started to run rough, then the light went solid on! Anyone else?

Update: Got the jeep back from the dealer with a P0300 code; "multi-cylinder missfire". There is a Tech Service Bulletin that noted PCM Fuel Trims were not at the proper levels; requiring a PCM-Flash. The fuel trim value was way high @ 25, and it is required to be somewhere between 1-5. After reflash and test it is now 1-3. So basically a firmware update. I asked how often this is happening on the Jeep JT(?) and they said they have seen around a dozen rigs come back for this, and once the PCM is flashed, there have been no problems. I will continue to monitor at this point. Maybe I get better fuel mileage moving forward?!

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[Gvsukids]

Waiting for a tow. I have only 3500 miles on my 2023 Mojave, and we took a weekend trip. At 250 mi the engine warning light starts flashing. It started to run rough, then the light went solid on! Anyone else?

Run out of oil? Take it to the dealership.

 

[Lancel]

So many things it could be but I immediately thought misfire and bad coil. That stinks, I hope you can get back on the road quickly.

 

[ShadowsPapa]

Waiting for a tow. I have only 3500 miles on my 2023 Mojave, and we took a weekend trip. At 250 mi the engine warning light starts flashing. It started to run rough, then the light went solid on! Anyone else?

That could be so many different things, dozens if not more.

I'd say that the fact it's running rough may mean a misfire.
A misfire can be caused by spark plugs, coils, injectors, sensors, cam and followers and more.

Sorry, but...........
Not sure when a MIL (malfunction indicator light) comes on there seems to be thoughts that it's always the same thing or there's a simple answer or maybe only 5 different possibilities.

Run out of oil? Take it to the dealership.

Wow, I hope not with 3500 miles! Mine can go 7K and not be half a quart low.

 

[mkopec]

Run out of oil? Take it to the dealership.

I checked all the fluids before the trip, and none of the gauges were running hot when this was happening.

 

[Hootbro]

Sorry to hear. That is why there is a warranty.

 

[mkopec]

Next question. I have an AES Certified mechanic that I have come to trust nearby. Considering some of the negative forum comments towards trusting just about anything in the dealership care, should I be instead getting a preauthorization from the dealer to take it to someone else?

 

[Mr._Bill]

Next question. I have an AES Certified mechanic that I have come to trust nearby. Considering some of the negative forum comments towards trusting just about anything in the dealership care, should I be instead getting a preauthorization from the dealer to take it to someone else?

If you want warranty coverage, you have to take it to a Jeep dealer. If they don't have the ability to fix it, they will send it out or bring someone in to work on it. They are not going to give you authorization to take it to your preferred mechanic for repairs and have them pay for it.

 

[ShadowsPapa]

Next question. I have an AES Certified mechanic that I have come to trust nearby. Considering some of the negative forum comments towards trusting just about anything in the dealership care, should I be instead getting a preauthorization from the dealer to take it to someone else?

Only a Jeep/FCA dealership can do warranty. If you have something major - go to a dealer.
Ignore the dealer-haters.
They can't authorize anyone else - and no one else is going to have the in-depth training a Jeep tech has.
I've had great luck with dealer shops.
It's mostly forum members who like to DIY who will be negative about dealerships.
I'm a life-long mechanic and trust the dealership where I take mine for warranty work.

 

[ShadowsPapa]

If you want warranty coverage, you have to take it to a Jeep dealer. If they don't have the ability to fix it, they will send it out or bring someone in to work on it. They are not going to give you authorization to take it to your preferred mechanic for repairs and have them pay for it.

Engine misfires will be drive train warranty - no way I'd take it to a "trusted mechanic" elsewhere for this. It could be something running into many hundreds or even more - and a favorite mechanic means out of pocket for all repairs.
Who is to say the "trusted certified mechanic" would be any better.

People need to be careful about what they read and believe and take as "most" in forums.
Most Jeep owners go to dealerships for warranty work - millions of Jeep owners.

 

[Scott L]

Hopefully there’s more than one Jeep dealer in your area. We have a bunch so there’s a lot of incentive to be above average. I read the stories about bad dealers and can tell you that has not been my experience at all. They have been professional and so far I have had nothing bad to say.

 

[Remy_Dog]

I’m fortunate, my local DCRJ dealer has always been above and beyond my expectations with the seven vehicles I’ve acquired from them over the years. In fact, I wouldn’t trust my vehicles to anyone else. I hope you have a great experience with yours as well.

 

[Lost1wing]

Only a Jeep/FCA dealership can do warranty. If you have something major - go to a dealer.
Ignore the dealer-haters.
They can't authorize anyone else - and no one else is going to have the in-depth training a Jeep tech has.
I've had great luck with dealer shops.
It's mostly forum members who like to DIY who will be negative about dealerships.
I'm a life-long mechanic and trust the dealership where I take mine for warranty work.

Let's be honest, you would have a pretty good idea of what is going to be done and you have a keen mind to know what a reasonable repair would be. I think the dealership knows that as well and would treat you a little different. Not all customers bring data logs to accompany a misfire code. I don't trust dealers much. I have seen some of the games they play.

Going to the dealer armed with information of the problem at hand is important. Get the codes, and at least open the the hood and look around.

 

[sabinjo]

Similar issue same mileage......and then again later.

See my two posts in this thread:
https://www.jeepgladiatorforum.com/forum/threads/check-engine-light-question.72299/post-1180360

Happened to me at 2,800 then again around 6,800 miles.

I'm at 10,800 miles now. Fix so far was a PCM update on the second instance. First time they couldn't find anything wrong and it went for another 4k miles before it came back.

Yes, the fix was a simple one, and mayyyybe that's the end of it for good. However, I still can't trust the damn thing and don't want to end up in a situation exactly like you're in, hundreds of miles from home and being stranded.

Just wait until your back window starts to leak or you get severe death wobble on a completely stock setup. I'll admit I'm a little bitter about my first Jeep ownership experience, but I think it's justified.

 

[ShadowsPapa]

Let's be honest, you would have a pretty good idea of what is going to be done and you have a keen mind to know what a reasonable repair would be. I think the dealership knows that as well and would treat you a little different. Not all customers bring data logs to accompany a misfire code. I don't trust dealers much. I have seen some of the games they play.

Going to the dealer armed with information of the problem at hand is important. Get the codes, and at least open the the hood and look around.

I guess I've had better luck - other than the dope that said the winch was causing battery discharge........
When I took my JT in for the weird HVAC issues, I had no data other than telling them this is how it acts and when.
It never got beyond the service advisor - he asked me to pull the truck into the check-in area and he dug into the books, so to speak. He looked up exactly how the temp sensor works, when it senses and stops sensing, and how it interacts with the HVAC.
I had no codes, no data - he dug in, spent 45 minutes and came up with an idea. We chatted about it a while. He was right. He wasn't even a tech in the shop.
And 45 minutes spent - no charge.

People remember the bad ones, and sometimes it's a customer dropping it off and simply saying "it's broken" - and I get that, but a LITTLE more info might help, like when it broke and so on.

Look at all of the posts here where the question is "my truck stopped, what's wrong with it?" instead of giving all of the information up front.
Even the seat swapping thing - it was posts later we finally learn that it was a leased veicle and the seats were part of the VIN, not added in later.
This is the sort of bunk dealers have to deal with - drop it off "it's not running right, fix it" and they take off.

I wonder if people pull that with doctors? Probably.

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