Ford Fiesta - 11 1.25 Overheating Fiesta - Fullchat
Its mechanical. The coolant in the block reaches around 95deg C. The thermostat is immersed in that coolant and it should open automatically allowing the stgnant coolant to now circulate. Hence the sudden rush of coolant in the top of the radiator.
Last edited by: Fullchat on Sat 29 Jun 19 at 23:01