I’m not a car guy. I want to be. I’m learning. I learn by making friends with mechanics and absorbing their information. I had a car a few months ago with some overheating issues. (Got it resolved. No water in my coolant at all, using straight concentrate in a brand new, empty radiator, like a dingus. 🤦🏼♂️) But before I fixed it, someone said it might have been the thermostat. I asked a mechanic friend of mine about it. (I haven’t known him long.) He told me he’s been a mechanic for right around a decade and has NEVER seen a thermostat issue cause overheating. Is he just totally out of touch? Or did I misunderstand how the cooling system of a vehicle works? Let me know.
As a DIY type mechanic (not a real one) I’ve seen my car close up on me multiple times. When I think over heating I think no water circulation and the thermostat is the cheapest to start with. When it’s closed from my idea is that it prevents the flow to the engine and then the heat starts backing up. Ever see your coolant box piss out and bubble? If no water is on your oil then my guess it’s a clog. Blocked thermostat.