question, I have a 93 civic Hb. I was driving it then I saw my heat and cold sensor is going up almost to the the red level to overheat. I checked my radiator and then it looks like that my radiator fan is not working properly. it looks like it turns on very long. what do you think is the problem. thanks

 

Well, if it's your fan not kicking on at the right time it could be the fan switch or the relay. Additionally it could either be air in your coolant, or a leaky HG.