the air stop working and the temp went up then returned to normal. whats wrong?

yes its radiator fans, could be relays or just poss burn't wiring connectors

Thanks...im having it checked tomorrow...will keep you posted...we women don't know too much about vehicles ....got it checked mechanic says its nothing and normal to heat up a little as long as it goes back to normal. Didn't say much about the air working on and off. Yesterday it ran completely hot when I turned on the air so I parked it. later I drove it after the temp went to normal but smoke came out of the tail pipe for a little while and then stopped. I drove it on the highway for about 70 miles but there was no more smoke and it ran perfectly. im due to bring it back to him on Tuesday to get the radiator cleaned. he says my fan is electrical should I just replace it anyway and what are the chances of me having a blown head gasket?