Hey Scotty I have a 2017 Hyundai Elantra 2.0L with 127k miles.After the car warms(doesn’t do it when cold) up if I’m at a stop light and I’m holding the brakes the Rpms drop a good bit and I can feel more vibration that normal through my seat.and if I go to accelerate before the rpms go back up the car seems to stumble Before picking up,I have read on multiple forums that several other Hyundai owners have the same issue and some people say it’s normal and others do not,I checked for vacuum leaks and didn't find any, there are no codes. I’m not sure what to think please helpAlso I have a scan tool that can do live data but it’s pretty limited
I had this happen to me. The car eventually stalled in stop and go traffic after several months. The car vibrated when stopped at traffic lights or in traffic, I had a 2010 Honda Civic. I would get it looked at as soon as possible. It was a $400 repair for me. I do not remember exactly the official term for the issue.
