1995 Ls400 overheating
I have a 95 ls 400 overheating. A couple of days ago it started overheating out ov nowhere. So I changed the thermostat and it ran fine for a day then it started overheating again so I went to get codes for it and a temp sensor came up so I changed it but it still overheats. The temp gauge lowers when I come to a stop but starts heating up when I go.
Anybody have any ideas what it could be. I was reading that maybe there's bubbles in the coolant system so I might have to flush it but I don't know. If anybody can give me some input I would appreciate it.