I have been very aware about how is the cooling system is working because I am going to do a long travel with my car the next month. I have noticed that when I get home and the engine is at operating temp I can feel bubbles in the upper radiator hose (the coolant is boiling), my coolant temp gauge is as normal in the middle and my cooling fan isn´t always on in this condition, I mean the cooling fan switch turns the fan on and off, it isn´t on all the time like when the engine is really overheating. I have keeping track off the coolant levels for one week and I haven´t lost any coolant.
Are this bubbles normal? Should the coolant boil at normal engine operating temp?
I am going to do a 2nd coolant flush and put a new radiator cap anyway but I would like to know if this condition is normal.
Are this bubbles normal? Should the coolant boil at normal engine operating temp?
I am going to do a 2nd coolant flush and put a new radiator cap anyway but I would like to know if this condition is normal.