My husband and I just recently bought a 2004 Ford Focus SE 2.0 Dual Head Overcam 16v from a private party. When we were out today it started overheating. It doesn't seem to be leaking anything and the fans don't seem to be kicking on at all. Was told by previous owner that the fans were just replaced. My husband is going to try to figure it out tomorrow. Any tips on where to start?