98 concours, I just replaced the radiator about 4 days ago. Drove the car on a 200 mile trip and now I'm getting coolant being pushed out the resiviour. Weirdest thing happens I'm pulling in my aunts garage and I notice that there is a trail of coolant I look and its coming out the resiviour. So I refilled today and everything is fine until the temp gets to about 220 right before the cooling fans come on. At that temp it, with the resivour cap off you can slowly see the coolant level rise and if I leave it running it will start pushing the coolant out the resivour. I noticed one time that the temp got up to 232 and the cooling fans were on high. I pulled the return line off and its fine. It flows a steady stream until the coolant starts being pushed out of the tank. At that point it starts steaming. I've also noticed that my temp seems a lil wierd, I can drive the car just fine and its not using any coolant but my temp does fluctuate, now my temp actually drops like if the coolant temp is 177 if I park and idle the motor then the temp will drop down to 170. I've blown back on the return line and there seems to be no blockages. Any help would be greatly appreciated. THank you.