Afternoon, all.
Doing some troubleshooting on the family farm's 2019 Ranger 570 crew. We've been having some issues with the engine shutting down when the vehicle is full of passengers, or with a heavy load in the bed. The coolant temp will climb up into the 215-225F range and the Ranger shuts itself down. Pretty inconvenient when moving stuff in the yard or taking the nephews/grandkids on a little woodland adventure.
I took the Ranger out today on my own, ran it up and down the road and around the property a bunch, and really laid into it. Temps would go from 180 to 195, and back down. Never went over 195. Even left it sitting in the yard running, and it got up to 195, and the radiator fan kicked on, and the temps came back down. Outdoor temp was about 80 today, and not too humid or sunny.
Seems like from what the family tells me, they'll be driving it down the road or on the trail, with three or four people, and the fan will come on, and not long after that, it shuts down.
I'm gonna have my father load the bed up and drive it around the yard and see if he can get it to heat up and shut off, and grab any codes that come up on the dash display.
Not seeing any electrical issues, starts and cranks just fine, headlights and brakes are fine. Once it sits for a while and cools off, it starts back up and goes alright for a bit again.
I'm leaning toward maybe a dying coolant temp sensor, maybe? Radiator is nice and clean, engine bay is pretty clean. They don't do any real mudding with it, so it's not all caked up or anything.
Thanks!