Coolant tank bubble fiasco....!!!
Recently replaced the radiator (new) on my 9-5 Aero and noticed that the temp would go up without the cooling fans kicking in....and coolant expansion tank starts bubbling and keeps bubbling after switch off as well ........settles after a while. Haven't driven it for a few weeks so just wondering if there is an air-lock somewhere in the system and whether I carried out the coolant bleeding correctly....should I have also changed the thermostat and the temp sensor at the same time?