9/3 Update - picked up vehicle from dealership this morning. They replaced engine with complete new (not remanufactured) engine assembly. Have only driven it about 30 miles, but so far, so good. Hopefully this resolves the misfire issue.
Before the PCM update was getting PO300 codes and CEL along with ESS lights/messages. After PCM, it was “pending” PO300 codes and ESS lights/messages. Had rough idle consistently throughout. Dealership confirmed engine was misfiring and in working with FCA technicians identified the compression...
When the computer update to the PCM that was released in mid-July did not resolve the issue, they started doing more tests and found the compression issue. I have not seen any of the paperwork on this current visit so am not sure what else they may have done during the past month that led to the...
Hi, Quick update - they are currently replacing the engine in mine. May be ready later this week or early next week. (For ease of reference for readers - manufactured in November 2019, purchased in May 2020, first CEL/PO300 code at 160 miles.)
Hi, I believe they adjusted the sensitivity of the CEL during the software upgrade without really addressing the root cause of the problem. Furthermore, the ASS light is still coming on as a result of actual misfires because, as I understand things, it is programmed to disengage when a misfire...
Hi, per the lower right corner of my window sticker, it says engine was made in Mexico. I checked a couple of others online and they indicate the same. I suspect all of the Pentastar engines are coming from the same plant. I understand the Gladiator engine is essentially the same engine as used...
Does the Auto Stop Start light also come on? If so, and if the supplemental battery checks out okay, the engine may be misfiring upon start up where it throws a “pending” PO300 engine misfire code that disables the auto stop start system, but does not turn on the check engine light. My Gladiator...
Friday 7/31 Update — mine is back in the shop. Had the rough idle and Auto Stop Start light when I left for the dealership, so I left engine running upon arrival. They read the codes with the engine running noting a pending PO300 code.
In my view, and as others have also noted, it seems the pcm...
Friday 7/24 update - I have not had a CEL since the computer update, but the Auto Stop Start light is still coming on periodically. It’s not always upon first start of the day, but is always upon starting and leaving my house. When it happens, it is as I am backing out of the garage and...
Brief update - picked up mine on Wednesday. Fortunately no check engine light so far. However, got Auto Stop/Start light and related message upon initial startup yesterday and today.
Yesterday, on 2nd and subsequent start ups, the auto stop/start light and related message did not appear.
This...
Just talked with service manager. They updated software yesterday and the update appears to have worked. I am picking it up in the morning. On one hand, I am very excited. On the other, a bit more cautiously optimistic. I certainly hope this works!
Hi, I think it depends. My dealer did not release mine back to me (on the second visit) due to multiple misfires on cylinders 2, 4 and 6. I think others have been released to their owners. I would take it in to verify the problem and then follow their guidance.
Also, some dealers may not be...
Unfortunately, I think this is just further evidence that FCA does not really know what is wrong with these vehicles. This also speaks volumes regarding (a) the FCA quality control process at time of manufacturing, (b) the FCA process for resolving issues and (c) the FCA process for...
Mine was built the last week of November 2019, so this issue covers more time than FCA will admit. Also, it is unbelievable that FCA has done such a poor job of managing this situation by not communicating with dealers and affected owners, not to mention continuing to sell vehicles with known...