I bled my coolant and air definitely came out but I was wondering how much air is a lot. My car overheats sometimes and no one knows why. I bled it and drove around with air on full blast and it was fine. I am driving to california in a week and I want to know if my problem was air in my lines. Will air cause it to overheat or just get warm? Sorry for asking pretty much the same questions but I really need this solved.