I just pulled into the driving range when i noticed my temp had gone to the H part of the car. I pulled into the lot and poped the hood. The ever friendly steam of coolant fluid rushed out. I looked under my car and noticed a decent amount of coolant had somehow leaked out. At this point im wondering wtf is going on. I am not sure if its just that i had a crack in my radiator somewhere or if my thermostat had failed as well. Anyone had this type of problem? and or have Diy for Thermostat and radiator replacement? I overnited one along with a new cap and thermostat. Any help would be great or explaination.