Sounds like a problem to me. I have the same year venture as you do. My Temp rarely goes past the 1/2 mark and I live in Phoenix. I would check a few things right off the bat.
1. Have you changed your coolent recently? What mixture % is it? Parts store sell testers cheap to test your coolent.
2. Check the 2 fans that are attached to the radiator to make sure their running. I'm thinking if the fan's are not working properly, you would see the overheating issue idle/parked/stopped. But when driving on the freeway their may be enough airflow from your speed to keep the engine cool.
I would start their. A bad thermostat possible as well, but I would expect that to make the eninge overheat after a few minutes of driving and not cool back down unless it's sticking.
Friday, August 21st, 2020 AT 11:47 AM