Ever since getting my t4 I’ve struggled with over heating, I’ve the same engine as you, so far I’ve checked the radiator to if it’s blocked. I’ve replaced the thermostat for another 87deg, changed out the coolant, opened the wax stat so the fans can operate cool, changed the fuses on the fans, and yet still my van struggles. Have you any other ideas, it’s not so bad and the temp does go down when I’m coasting or the engine isn’t being pushed , but when I’ve got the family along with me it struggles or if I approach any steep hill it climbs way up
Hey! It might be worth fitting a new radiator. When I first got my van I remember it was fine unless I was going uphill for longer than a minute or so, and then the needle would start to climb. I once had steam pouring from the bonnet in hot weather too. After my radiator bust a leak and I fit a new one I’ve had neither of these issues. It may or may not fix your problem but it’s worth trying, and only costs about £100 if you do it yourself. Best of luck!