I was driving the car today and I started to see steam coming from the front of the car, then I looked at the gauge and saw that the needle was all the way at the top. I immediately pulled over and shut off the car and the temperature started to drop when I turned the key to accessory mode and the fans started running again. I'm guessing I have a problem with the fan relays. Does the radiator have a pressure relief valve? I hope so, or I may have some issue with the radiator or hoses. I was just around the corner from work's parking garage so I rolled it down the ramp and into the fist spot in the garage. I hope I don't come into work to find a huge green puddle under the car tomorrow.
My first guess is that the thermostat was stuck shut and caused the car to overheat and the tank cap didn't relieve the pressure so it found the next weakest spot to spew out of the car. I'm hoping the leak was just a pressure relief valve on the radiator and replacing the thermostat and adding some new coolant will fix it.
What do the experts think?