Cylinder Misfire

[AT899]

Hello everyone. Owner of a 2024 Ram 1500 3.6 Etorque. Bought brand new in August of 2024. Only 20,000 miles. Went outside today to go do some errands. The engine started roaring and the truck was shaking all over upon startup. Then the check engine light started flashing. Took my wife’s car and picked up a code reader. When I returned home the truck started normally, no roaring or vibrating, and the check engine light was on but wasn’t flashing. When I hooked up the code reader it said cylinder misfire on cylinder 6. I’m going to call Monday morning and see when the dealership can get it in. Fortunately it’s still under warranty. But I’ve heard horror stories about trucks sitting at dealerships for months and parts being on back order. So, does anyone have experience with this? What am I in for? I honestly feel like this is a kick in the gut for a practically brand new truck with only 20,000 miles on it. Honestly this has me wondering if I made the right purchase if it’s already having issues. Thanks in advance.

 

[kapinallinen2]

There was some chatter in the penta-star 3.6 sub forums about this?

 

[AT899]

Hello all, reposting this here since this forum is specific to the 3.6. Owner of a 2024 Ram 1500 3.6 Etorque. Bought brand new in August of 2024. Only 20,000 miles. Went outside today to go do some errands. The engine started roaring and the truck was shaking all over upon startup. Then the check engine light started flashing. Took my wife’s car and picked up a code reader. When I returned home the truck started normally, no roaring or vibrating, and the check engine light was on but wasn’t flashing. When I hooked up the code reader it said cylinder misfire on cylinder 6. I’m going to call Monday morning and see when the dealership can get it in. Fortunately it’s still under warranty. But I’ve heard horror stories about trucks sitting at dealerships for months and parts being on back order. So, does anyone have experience with this? What am I in for? I honestly feel like this is a kick in the gut for a practically brand new truck with only 20,000 miles on it. Honestly this has me wondering if I made the right purchase if it’s already having issues. Thanks in advance

 

[AT899]

So an update on this. Took it to the dealer today. Basically they did a software update and said that should fix the problem. I’m a little skeptical that will fix it. But we’ll see.

 

[Aivars]

P0304 misfire only at WOT/high RPM — coil & plug swap didn’t move the misfire (Ram 1500 3.6, 2020)
Hi everyone,this morning on my way to work I did a pretty aggressive overtake and went wide-open throttle. RPM climbed to redline and at that moment the truck beeped, threw a warning, Check Engine came on and I got “Start/Stop Fault.”I scanned it right after (both Tazer and AlfaOBD) and the code is P0304 — Cylinder 4 misfire. If I clear the code and go redline again, it comes back immediately with the same behavior. At first I assumed it’s a coil or spark plug, but the plugs were replaced about 5,000 km ago. To test it, I swapped parts: moved spark plug from cyl 4 to cyl 1, and moved coil from cyl 4 to cyl 3. Then I did another redline pull expecting the misfire to move, but it still throws P0304 (cyl. 4) every time.So it looks like it’s not the plug or coil, and something specific to cylinder 4 is causing a misfire only under heavy load/high RPM. Any ideas what I should look at next? Thanks in advance. I’ll be taking it to a service shop.