Joined: Oct 2018

Posts: 1

Likes: 0

Hey guys, I have a 2003 5.9 that is running hotter than it use to. Running down the highway at 70-75 It gets to around 215-220 degrees unloaded. I’ve put a new thermostat, and fan clutch and there is no change in temp. I changed the antifreeze in the past 20,000 miles. The truck is stock and use to run around 200 no matter what. What else am I missing? I’ve checked the coolant and it is not leaking coolant either. Do y’all have any suggestions?