are u sure it is over heating. what does the temp gaudge say. it seams a few people have had a problem(me included)of the gaudge being wrong... mine was on red shortly after starting. it ended up being a bad temp sensor. how do u know it is overheating. when u think it is hot. shut it off. put a rag over the coolent tank. slowly turn 1/4 at a time untill the hissing stops. buy a food temp meter( i got one for 1.99$ at walmart) and see what it reads. i beleave 190-205 is normal. also the temp fan control gets info from a diffrent sensor. if it is an issiue with ur fans not comming on. look at the fuses and relays.