Cooling fan:( on 2000 BMW 323Ci

my cooling fan light keeps coming on and off. And sometimes the temperature hand passed normal and hit red. And now i can hear a whistling sound in the back of my car. It's scary!!! I took it in to do a full body check but the guy at the gas station just put water in my car and that was it. Nothing was solved. I dont know what to do because im trying to avoid going to a mechanic cus last time I went, I spend almost a thousand dollars :(

by in Honolulu, HI on January 13, 2013
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1 answer
ANSWER by , January 13, 2013
sounds like you have a leak somwhere have the cooling system pressure tested