I didn’t take it negatively just wanted to clarify a little. The wasted gas while idling definitely bothers me but I have been trying to document everything since the first CEL came on. Since I was keeping a record of everything anyway, I decided to try changing my driving habits to see if that had any effect. I don’t know how much, if any, help it will be to my service department, but they said the more information the better. What they don’t know is that I am a little OCD so all these notes may come as a shock to them!
From my misfire experience and documentation, the CEL "always" set when first started AND driving off - hot or cold. It never set the CEL while on the road driving - only when just off-idle.
Yes, that sounds exactly the same as mine. Today, after highway driving for an hour, I stopped for 10 minutes to grab something for lunch, so the engine was still up to temp. Within 30 seconds of pulling out of the parking lot, I had 45. Nineteen misfires on 2, seventeen on 4, one on 6, and four each on 1 and 3. Thirty minutes later when I pulled in at the office it was still at 45. I will mention your resolution to my service department. That might not be it on mine but it is great to hear they found a solution for yours.
No, not really. That thinking dates back decades and it's not real. I'd call it a myth. Any expert will tell you it's a poor way to warm an engine and does more damage than good in the long run.
Having been a pro mechanic for decades, not sure where to even start on that one.
That is probably because they in sequenced the updated cam part number revision into 2022 model vehicles during production. Unless the new cams have a manufacturing defect they have not yet determined, throwing in new cams onto a 2022 model would not be warranted yet.
FWIW, If it were me, I’d drive it and press on. Right or wrong, I said to myself, if it blows up, it blows up. Having said this, I was very frustrated with the whole process and why it took months.When I picked the Jeep up at the dealership this evening, they gave me the publication below. The paper tells them to perform the published diagnostic routine for code P0300. If the diagnostic directs to a condition of trouble not found, no repair is recommended. It also says that engineering is investigating the issue. In my case, trouble was not found so there was nothing recommended.
After talking with the GM and the service manager for half an hour, they said my options are to either (A) wait for the Stellantis engineers to contact them with a recommended repair, (B) continue driving it until it happens again then bring it back in and let them dig deeper, or (C) open a star case. The dealership is sympathetic and willing to work with me. On one hand my gut tells me to open a star case and let them get to the bottom of it. On the other, I am not sure if this is a serious problem or not because I cannot hear or feel anything at all from the engine that I would call a misfire.
The decision is mine but since there are many people on here who are much more knowledgeable than me, I am asking for advice. Is a star case the best way to get to the bottom of a misfire problem or do you think it would be best to wait until it gets worse and let them take another look?
That makes sense.
That is what I am thinking also. Just drive it and see what happens. This weekend is supposed to be in the lower 90s so I’m going to take the top and doors off again and drive around town to see if I notice anything at all odd. Even with all the misfires, I have not heard or felt anything out of place. There is a slight tick coming from the passenger side of the engine but to me, it just sounds like a 6 cylinder. In my very limited experience, I have a hard time believing this is a purely mechanical issue. If there were actually 60 misfires across multiple cylinders in less than a minute, that should be noticeable. To me, it seems more like a software problem. I’ll spend a few hours in it this weekend and see if I notice anything.
I feel for you. At least I had a few months before mine started. My 22 Rubicon was in the shop after throwing p0300 on Wednesday with no resolution. The dealer told me I can either drive it until it happens again or leave it and open a star case. My misfires have been going on for a couple months but the 3.6 hasn’t sounded rough at all and if not for throwing codes p0304 and p0300, I wouldn’t have known there was a problem. I'm going to continue using it and just keep an eye on it. If it gets to the point of being noticeable, I’ll try the star case and see what happens.
Haven't noticed any weird sound really, but its so new that I haven't really been able to determine what is normal. Only thing I noticed on my way to the dealer this morning is that under the same conditions, cruise control at 65 on flat highway, my current MPG dropped from 23 MPG before the error code to 18 MPG on the display.
