1999 Peugeot 206 1.4
Okay so I know this was asked before, but I got a 206 with a 1.4 petrol in it and I need the summary of most likely causes of it overheating. In my case, the engine overheats slowly while idling and pretty fast while driving. It seems as if the thermostat doesn't open even though it's a month or two old now. The fan doesn't engage, but when tested "artificially" (applied heat with a propane torch at the radiator, I know this is not a good idea but I had no other ideas of testing it) the fan kicks on just fine. Also, the water pump is doing it's job as it was spraying coolant everywhere when I forgot to tighten the thermostat. Other things I've noticed was that the upper radiator hose gets somewhat hot while the lower hose is barely even warm. And coolant starts leaking between 70-90 degrees Celsius. and above that it just starts boiling to the point it pushes the majority of coolant out of the reservoir. The reservoir and the cap are also new.