So I’ve had this issue recently where running the car for over an hour, if I stop and sit for a couple seconds the car will misfire once every ~30 seconds it feels like, and only while warm. It doesn’t pull up any codes and It also starts up rough and shakes the hell out of the car if I start it once it’s been warm for a while. Neither issue happens when it’s cold, and it does it whether the ac is on or off. any ideas?

 

Check for vacuum leaks. What device are you using to read the codes?

 

autel scanner, no vacuum leaks found

 

if you have no codes, that's most likely because it's not occurring enough to throw a code or it resolves itself. Intermittents are the worst to troubleshoot.

 

it’s terrible to troubleshoot for sure haha. Been going at it for 2 weeks with no leads. Taking a shot in the dark and doing my PCV system as my car never went in for recall and potentially is showing symptoms now.