u/Anxiouschicken1

Hey! I just bought it a month ago and when I'm driving it'll kick and then the coolant temp will jump up, alerts to high coolant temp. After a few minutes it goes back down but drives rough. Ive had codes ran and its not throwing any and ive made sure it has enough and correct coolant. I also had them check both batteries Any insight? I've taken it to the dealership twice and paid alot and they haven't fixed it.